The present invention relates to a synergistic herbicidal composition for weeds control in pre-emergence, early post emergence to late post emergence. More particularly, the present invention relates to a synergistic herbicidal composition comprising Tembotrione or its agrochemically acceptable salts, at least one sulfonylurea herbicide or its agrochemically acceptable salts and another herbicide selected from a phenyl urea herbicide or a triazine herbicide or its agrochemically acceptable salts, for control of broad-leaved weeds, sedges and grasses in various crops. The present invention relates to synergistic herbicidal composition comprising bioactive amounts of Tembotrione or its agrochemically acceptable salts, at least one sulfonylurea herbicide or its agrochemically acceptable salts and another herbicide selected from a phenyl urea herbicide or a triazine herbicide or its agrochemically acceptable salts. The present invention also relates to process for preparing the said composition and its use as herbicide.
BACKGROUND OF THE INVENTION
Weeds are undesirable plants that can severely damage yield in crops. Farmers usually control these plants at the pre-plant stage as well as after sowing. The weeds can reduce field crop yields by competing for water, sunlight and nutrients. Profitable crop production depends on effective weed control. Herbicides are pesticides useful for killing or controlling unwanted plants/weeds. The agriculture industry uses a wide range of herbicides, primarily to control undesired growth of weeds which interfere with growth, development, yield and quality of agricultural crops. More so, they are used to provide an optimum environment for growth and propagation of plant varieties. Modern herbicides are used to either control or suppress these undesirable plants so as to allow sown crops a greater share of nutrient.
However, there still exists a scope for research and development of novel formulations for agriculture which are environmentally safe, cost-effective and which can be used for protection of crops during the critical periods of cultivation capable of acting both on the narrow-leaved and broad-leaved weeds, grasses and sedges. The control of undesired vegetation is extremely important in achieving high crop efficiency. Achievement of selective control of the growth of weeds especially in such useful crops as rice, soybean, Sugar beet, corn (maize), potato, wheat, barley, tomato and plantation crops such as sugarcane, among others, is very desirable. Unchecked weed growth in such useful crops can cause significant reduction in productivity and

thereby result in increased costs to the consumer. The control of undesired vegetation in non-crop areas is also important. Many products are commercially available for these purposes, but the need continues for new products that are more effective, less costly, less toxic, environmentally safer or have different modes of action.
More so, a wide range of herbicide compositions contain only a single active ingredient and cannot contain two or more active ingredients due to several reasons like adverse reactions, non-synergistic effects, non-compatibility of intermixed ingredients etc. However, the combinations currently known are not sufficient to control the resistant and persistent weeds. Growers, increasingly face complex weed situations that may not be controlled with just one herbicide. Further, a majority of the commercially available chemical herbicides are selective in their action.
A common problem with selective herbicides is its weed control spectrum, meaning the range of weed species effectively controlled by the herbicide, does not cover the full diversity of weeds affecting the crop and are not broad spectrum in nature. It is therefore, a practice to apply two or more herbicides simultaneously in order to achieve maximum spectrum of control. But it requires a lot of human ingenuity and rigorous efforts to identify compatibility between the active ingredients and the specific ratios in which these components must be mixed so as to obtain the maximum desired results.
Combinations of herbicides are used to control a broader range of weeds. However, the combination of herbicides may not always result in the desired effect. Combination of herbicides may lead to an additive effect or an antagonistic effect. It may also result in phytotoxicity to the crops making it an undesirable combination. Agronomists must therefore, carefully select the herbicides that can be combined to offer a synergistic effect that would control weeds while having no phytotoxic effect on the crop, and reduce the chances of development of herbicide resistant weeds.
Protection of planted crops from undesirable plants which inhibit crop growth is a perpetual struggle for all farmers. Herbicides have been used to control growth of such plants. There still remains a need for improved herbicidal combinations that can effectively control weeds thereby improving yield and plant health, with reduced phytotoxicity.
Another common problem with many commercially available herbicides is the narrow window of application. Most of them provide either a pre-emergence or a post-emergence weed control. An effective weed control can be achieved by usage of herbicides appropriately, which can be

applied as an early post emergence to late post emergence (3-12 leaf stage of weeds). The activity of herbicides can be enhanced in various ways to achieve the maximum benefit. One of the ways is to use combinations. There is always a need in the art for improved herbicidal combinations with enhanced weed control efficacy, which are safe to crops and have no adverse effect on germination or growth of succeeding crops. Thus, there arises a need in the art to combine herbicides with varied modes of action, which allows for broader spectrum of control, targeted effect and good resistance management apart from good residual effect on succeeding crops using lower application rates.
Therefore, to develop sound and practicable herbicidal recommendation, it is very important to study the residual effects of herbicides on succeeding crops in the rotation. However, identifying appropriate combinations, their agrochemical application rates and ratio of the combinations is essential to achieve efficacious control, which is not straight forward. The selection of a particular formulation type is more cumbersome for an agrochemical combination. However, there remains a great need for improved broadleaf, sedges and grassy weed control compositions and a method of controlling such noxious vegetation in pre and early post emergence to late post emergence (3-12 leaf stage of weeds.) without adversely affecting desirable plants and which reduces the amount of chemical herbicidal agent necessary to obtain the acceptable weed control. However, the activity and selectivity behaviour of a composition with multiple herbicides is difficult to predict since the behaviour of each single herbicide in such a composition is often affected by the presence of the other(s) and the activity of such a composition may also vary considerably depending on chemical character, plant species, growth stage, and environmental conditions, mostly this practice results in reduced activity of the herbicides in such type of compositions.
Further the environmental and economic requirements imposed on modern-day crop protection compositions are continually increasing, with regard, for example, to the spectrum of action, toxicity, selectivity, application rate, formation of residues, and favourable preparation ability, and since, furthermore, there may be problems, for example, with resistances, a constant task is to develop new compositions, in particular herbicidal agents, which in some areas at least help to fulfil the abovementioned requirements. Also, in particular, where different type of weeds such as grassy weeds, broad leaved weeds and sedges are required to be controlled together in a single application of herbicidal composition, which are dose friendly and efficacious and less phytotoxic to various crops & plants.

Further, certain species of weeds are specifically resistant to specific herbicides and are therefore hard to kill. Such kind of weeds include various species of Cyperus genera weeds which affect useful crops like maize, Sorghum, potato and sugarcane. Thus, it is the need of the art to combine herbicides with varied modes of action, which effectively kill such weeds in a targeted manner in single shot application without causing phytotoxicity and using lower dose of application rate.
Certain applications disclose certain combinations of herbicides, but their compositions post a lot of issues.
For instance, reference can be made to CN105010354A, wherein it discloses a weeding composition with Tembotrione. The weeding composition is characterized by being composed of the Tembotrione and a weed killer A, wherein said component A is selected from the group consisting of sulfonylureas, sulfonamides, amides, carboxylates, wherein the mass fraction of active ingredients is 3-90%, the mass ratio of the Tembotrione to the weed killer A is 30:1-1:30, and the weeding composition can be prepared into dosage forms of water suspension, oil suspension, suspended emulsion, emulsion oil, micro emulsion, water emulsion, wettable powder, water dispersible granules, granula and dry suspending agent. The weeding composition is used for controlling weeds in corn fields or other places.
Reference can be further made to CN106172468A, wherein it discloses a herbicidal composition containing Ametryn and applications thereof. The herbicidal composition is composed of amicarbazone, Halosulfuron-methyl, Ametryn, other auxiliary agents, and filling materials. The dosage form can be dispersed oil suspension or wettable powder.
Reference can be also made to AU2007360644B2, wherein it discloses a synergistic herbicide mixture comprising at least one sulfonylurea herbicide, particularly sulfometuron-methyl, together with diuron and hexazinone, or salts thereof. Also disclosed is a method for controlling undesirable vegetation by applying the herbicide mixture to the locus of the undesirable vegetation. This herbicide mixture is disclosed to effectively control a broad spectrum of weed species.
Tembotrione: (2-2-chloro-4-(methylsulfonyl)-3-(2.2.2-trifluoroethoxy)methyl-benzoyl-l,3-cyclohexanedione), disclosed in U.S. Pat. No. 6,376.429, is a relatively new herbicide developed for selective control of broad-leaved weeds along with some grass weeds in maize. Tembotrione belongs to the triketone group and its mode of action is the inhibition of the enzyme 4-hydroxyphenylpyruvate dioxygenase (FtPPD). The activity of FtPPD herbicides is very much

dependant on the availability of light. Tembotrione is effective for both pre-emergence and post-emergence application, and unlike diuron, lower application rates are typically needed for satisfactory control from post-emergence compared to pre-emergence applications. The activity following post-emergent treatments of Tembotrione against broadleaf weeds is influenced by soil characteristics such as soil texture and organic matter content. The level of weed suppression clearly declined stronger on heavier soils than on lighter soils at a rather low application rate of 12.5 g a.i./ha and lower.
Although Tembotrione is generally useful for post emergent weed control, it is weak on some weeds, particularly grasses and sedges. For control of these weeds, new solutions are desirable. The salts of Tembotrione include those formed with organic bases (e.g., pyridine, ammonia, or triethylamine) or inorganic bases (e.g., hydrides, hydroxides, or carbonates of sodium, potassium, lithium, calcium, magnesium or barium).
O O CI

Structure of Tembotrione
Sulfonylurea herbicides inhibit the action of the enzyme acetolactate synthase (ALS), which is essential in the biosynthesis of three branched-chain amino acids—isoleucine, leucine, and valine. ALSase is key enzyme in branched amino acid (i.e. valine, leucine, isoleucine) biosynthesis pathway. Plants die due to starvation for needed proteins in new growth because they cannot form these needed proteins without the amino acids valine, leucine, isoleucine. This inhibition leads to the rapid cessation of plant cell division and growth. Crop-selective sulfonylurea herbicides have been commercialized for use in wheat, barley, rice, corn, soybeans and oilseed rape, with additional crop-selective compounds in cotton, potatoes, and sugarbeet having been noted. There exists some limitation as regards usage and application of Sulfonylurea herbicides, which includes plant injury such as chlorosis, necrosis, terminal bud and meristem death (below), stunting, vein discoloration. Various sulfonylurea herbicides are known in the art. Chemical structure of some of such herbicides are provided below:

H3C
S-MH-C-NH-i

I'hlin-ininrun rlhv I C—OCHfl
nn ('■Lilliiviin methyl

OCH3
■CHa
0CH3

VI
N ° ° I /~CI
H3C-O-^N^N^N-V\ CH3
H H ° J*-*/
Halosulfuron-methyl 5 S—NH—C—NH-(X ,N
DCH3 thircniulfuron niclhrl

H3C

Prosulfuron

rN O o H
k A v
u n >T ST «
H HO
Cyclosulfamuron

0 O
H H 0

H H 0

CH3

OH

Sulfometuron

Primisulfuron

Halosulfuron methyl: methyl 3-chloro-5-{[(4,6-dimethoxypyrimidin-2-
yl)carbamoyl]sulfamoyl}-l-methyl-lH-pyrazole-4-carboxylate is a selective sulfonylurea herbicide for post-emergence control of sedges and other weeds in sugarcane crop. Halosulfuron-methyl interferes with ALS enzyme, resulting in a rapid cessation of cell division and plant growth in both roots and shoots. The sulfonylurea herbicides are rapidly absorbed by the foliage as well as by the roots of plants. Halosulfuron methyl is readily translocated throughout the plant and inhibits cell division. Decomposition of the sulfonylureas in the soil takes place by both hydrolytic and microbial processes. The rate of degradation is enhanced by increased temperatures, soil moisture content and low soil pH. Its adsorption to clay or soil colloids is relatively low.

^ JUL X ;vX>cl
O N N N V> \ CHa
Struture of Halosulfuron-methyl
Phenyl urea Herbicides: Phenylureas are a group of pesticides used for general weed control in agricultural and non-agricultural practices for example, along railroads, utilities, rights- of-way, and in industrial areas. These are now manufactured and distributed under the names of anisuron, buturon, chlorbromuron, chlortoluron, chloroxuron, difenoxuron, diuron, fenuron, fluometuron, isoproturon, linuron, methiuron, metobromuron, metoxuron, monuron, neburon, parafluron, siduron, tebuthiuron, tetrafluron, and thidiazuron. The herbicidal action of these compounds is based on their ability to inhibit photosynthesis. Typical phenylurea herbicides are photosystem II inhibitors. Degradation of phenylurea herbicides in nature can be a relatively slow process. These pesticides can be decomposed by UV irradiation or by acidic or alkaline conditions. Although approximately 20 different phenylureas have been marketed, there is relatively little toxicity information available for most. The acute toxicity potential for all phenylureas appears to be low. Various phenyl urea herbicides are known in the art. Chemical structure of some of the such herbicides are provided below:

Diuron: (N'(3,4-dichlorophenyl)-N,N-dimethylurea), disclosed in U.S. Pat. No. 2,655,445, is photosystem II electron-transport-inhibiting herbicide for use in certain crops such as alfalfa, pineapples, Sugarcane and conifer plantations. Although diuron is most conveniently obtained as a commercial product, it can be prepared by methods described in U.S. Pat. No.2,655,445. Diuron is a herbicide and algaecide used in a variety of cropping and non-cropping situations. Diuron is a broad-spectrum residual herbicide and algaecide used in agriculture for pre-emergent and post-emergent control of broadleaved and grass weeds. It is also used to control weeds and algae in and around water bodies and is a component of marine antifouling paints. It is a commodity herbicide, manufactured by many companies, offering pre-emergence control of a wide range of grass and broadleaved weeds with a long duration of action. The major markets for the product are on sugarcane, cotton, soybeans, cereals, fruit (particularly in orchards) and vegetables, whilst it is also important in non-crop sectors. The mode of action of Diuron is that it halts photosynthesis on treated plants, hindering the ability of the weed to turn light energy into chemical energy. This is a crucial procedure needed for plant development and survival.

Structure of Diuron
Triazine Herbicides: Triazine herbicide is a kind of broad-spectrum herbicide with the basic chemical structure of triazine. The major mechanism is to inhibit the photosynthesis, affecting the synthesis of the assimilation product. For example, the order of the several inhibitory effects of propazine, prometon, and prometryn on the metabolic processes of bean is photosynthesis, lipid synthesis, RNA synthesis and protein synthesis. Chlorophyll may be the major pigment on which triazine herbicides exert its toxic effect. The degree of toxicity is directly proportional to the light intensity and the herbicide doesn't work in the dark. Even triazine herbicide blocks the stream of electrons from water from to the chlorophyll, causing oxidation of chlorophyll, leading to the gradually destruction of the layered structure of chloroplasts. In addition, the herbicide can inhibit the electron transport system during photosynthesis, causing the accumulation of nitrate inside the blade, strengthening the damage to the sensitive plant. Chlorosis is the main symptom of this class of herbicides, first the blade tip will get chlorosis and withered, the leaf edge will

then turn yellow, and finally the whole plant dead. The most prominent example is the benzoxazinone existing inside the corn body is able to cause the hydroxylation and inactivation of atrazine; triazine herbicide can also from conjugate with the glutathione inside the resistant crops so that the crops get detoxification. Triazine herbicide can also undergo photolysis. In the soil, it can also get dehalogenation, N- dealkylation, deamination and ester hydrolysis, pyrolysis and other reactions to be degraded. Various triazine herbicides are known in the art. Chemical structure of some of such herbicides are provided below:

[I
H3C- Y ^ ^

M^ --.N

-ss*--~ J^--~ ^Ch3
1

CH3
Ametryn

Simazine

CMj
Atrazine Hexazinone

Metribuzin
HjC NH
Cvanazine

N^^-N CH;
CHj
Prometon
Since the 1960s, three triazine compounds have been particularly important in the sugarcane industry. These include simazine, atrazine, and Ametryn. Ametryn was introduced in 1962 and is still an established pre-emergence and early post-emergence herbicide. Ametryn is effective against annual broadleaf weeds and grasses and is often used in tank mixes and in prepacks with other products. Ametryn is a thiotriazine selective systematic herbicide absorbed principally through the roots, but also through the foliage, translocated acropetally in the xylem and accumulated in the apical meristems and leaves. Ametryn binds to the plastoquinone-binding protein in photosystem II, inhibiting electron transport. It also is used in banana, citrus, palm, and coffee and has had limited use as a post directed spray on corn. Ametryn is used for pre-

emergence and post-emergence control of both monocotyledonous and dicotyledonous weeds in corn, sugarcane, banana, pineapple, and non-crop areas.
/CH3
A
hT ^N CH3
H3C N N N CH3
d H H J
Structure of Ametryn
Presently, Tembotrione is reportedly very effective post emergence herbicide for controlling some grassy and broad leaf weeds in corn but its efficacy has not been tested with selected sulfonylurea herbicide and another herbicide selected from a phenyl urea herbicide or a triazine herbicide, for wide spectrum weed control in various crops.
However still there is a need for a synergistic herbicidal composition which overcomes some of the existing problems mentioned above and can be prepared easily without much complex manufacturing process and exhibits synergism. Accordingly, it is desirable to develop compositions and processes comprising combination of herbicides having different mode of action to give improved herbicidal bio-efficacy, broad-spectrum activity with better weed control, increased crop yield and reduced weed resistance and better crop safety by having targeted action on weeds and minimum damage to succeeding crops.
Therefore, present invention aims to overcome the problems of the prior art and provide a synergistic herbicidal composition comprising Tembotrione, at least one sulfonylurea herbicide and another herbicide selected from a phenyl urea herbicide or a triazine herbicide, which can demonstrate excellent synergistic and advantageous, unexpected effects against the undesired vegetation including weeds such as grassy weeds, broad leaved weeds and sedges.
This invention also provides a method of controlling undesired vegetation comprising applying to the locus of the undesired vegetation a herbicidally effective amount of the aforesaid synergistic herbicidal composition comprising Tembotrione or its agrochemically acceptable salts, at least one sulfonylurea herbicide or its agrochemically acceptable salts and another herbicide selected from a phenyl urea herbicide or a triazine herbicide or its agrochemically

acceptable salts. This invention also relates to the aforesaid composition and method of controlling undesired vegetation comprising applying to the locus of the undesired vegetation a herbicidally effective amount of said composition.
OBJECTS AND ADVANTAGES OF THE INVENTION:
The main objective of the present invention is to provide a synergistic herbicidal composition effective for controlling undesired vegetation including weeds such as grassy weeds, broad leaved weeds and sedges.
Another objective of the present invention is to provide a synergistic herbicidal one-shot composition effective for controlling undesired vegetation including weeds such as grassy weeds, broad leaved weeds and sedges.
Yet another objective of the present invention is to provide a synergistic herbicidal composition which can be quickly absorbed by the treated leaves of the weeds.
It is another object of the present invention to provide a novel and effective synergistic herbicidal composition for controlling the harmful weeds in plants.
It is another object of the present invention to provide a novel and effective synergistic herbicidal composition which can be easily formulated.
It is another object of the present invention to provide a novel and effective synergistic herbicidal composition which is ideal for weed resistance management and provides enhanced weed control efficacy.
Thus, an object of the present invention is to provide a novel and effective synergistic herbicidal composition and a method of controlling pre-emergence, early post emergence to late post emergence (3-12 leaf stage of weeds) weeds.
Another object of the present invention is to provide a novel and effective synergistic herbicidal composition having wide application window from early post-emergence to late post emergence (3-12 leaf stage of weeds) weeds.

Another object of the present invention is to provide a novel and effective synergistic herbicidal composition for improved broadleaf and grassy weed control without adversely affecting desirable plants.
Another object of the present invention is to provide a novel and effective synergistic herbicidal composition which reduces the amount of chemical herbicidal agent necessary to obtain the acceptable weed control.
It is another object of the present invention to provide a novel and effective synergistic composition which provides a better control of weeds at lower use rates, and which gives longer and good residual control.
It is another object of the present invention to provide a novel and effective synergistic composition showing improved resistance management as a result of broad spectrum activity of the combination of herbicides having different modes of action
It is another object of the present invention to provide a novel and effective synergistic composition which provide excellent crop safety in terms of no phytotoxicity and no adverse effect on germination or growth of succeeding crops due to reduced amount of dosage.
It is another object of the present invention to provide a novel process for preparing a novel and effective synergistic herbicidal composition comprising Tembotrione or its agrochemically acceptable salts, at least one sulfonylurea herbicide or its agrochemically acceptable salts and another herbicide selected from a phenyl urea herbicide or a triazine herbicide or its agrochemically acceptable salts.
Yet another object of the present invention is to provide a method of increasing yield in a crop by application of a novel and effective synergistic herbicidal composition.
Another object of the present invention is to provide a novel and effective synergistic herbicidal composition which is effective against hard to kill and resistant Cyperus genera weeds.
Another object of the present invention is to provide a novel and effective synergistic herbicidal composition which offers a broader and more complete spectrum of weed control.

Another object of the present invention is to provide a novel and effective synergistic herbicidal composition which is more stable and has enhanced shelf life.
Another object of the present invention is to provide a novel and effective herbicidal composition which is synergistic and thus helps in resistance management.
Another object of the present invention is to provide one shot application of novel and effective synergistic herbicidal composition for killing/ controlling highly resistant broad leaved weeds, grasses and sedges at lower application rates.
It is another object of the present invention to provide a novel and effective synergistic herbicidal composition which is environmentally safe, possesses broad spectrum bio-efficacy and is less toxic in terms of phytotoxicity.
It is another object of the present invention to provide a novel and effective synergistic herbicidal composition which is stable and has enhanced shelf life.
It is another object of the present invention to provide a novel and effective synergistic herbicidal composition which uses green surfactants including organo-silicone surfactants including silicone ethoxylated oils, bio-based efficacy enhancing agents including blend of polyterpene oils.
It is another object of the present invention to provide a novel and effective synergistic herbicidal composition which has enhanced efficacy and penetration capacity.
Yet another object of the present invention is to provide a method of improving plant health and increasing crop yield by using synergistic herbicidal composition comprising combination of herbicides selected Tembotrione or its agrochemically acceptable salts, at least one sulfonylurea herbicide or its agrochemically acceptable salts and another herbicide selected from a phenyl urea herbicide or a triazine herbicide or its agrochemically acceptable salts.
Some or all these and other objects of the invention can be achieved by way of the invention described hereinafter.
SUMMARY OF THE INVENTION
Accordingly, the present invention relates to a synergistic herbicidal composition comprising: a. Tembotrione or its agrochemically acceptable salts;

b. at least one sulfonylurea herbicide; and
c. another herbicide selected from a phenyl urea herbicide or a triazine herbicide;
d. one or more agrochemically acceptable excipients.
In one embodiment of the present invention, the synergistic herbicidal composition comprises of:
a. Tembotrione or its agrochemically acceptable salts; and
b. at least one sulfonylurea herbicide selected from amidosulfuron, azimsulfuron,
bensulfuron, Halosulfuron methyl, imazosulfuron, mesosulfuron, methiopyrisulfuron,
monosulfuron, Metsulfuron, Chlorimuron-ethyl, ethoxysulfuron, flazasulfuron,
flucetosulfuron, flupyrsulfuron, foramsulfuron, Prosulfuron, Thifensulfuron-methyl,
Cyclosulfuron, Sulfometuron, Primisulfuron, nicosulfuron, orthosulfamuron,
oxasulfuron, primisulfuron, pyrazosulfuron, rimsulfuron, sulfometuron, sulfosulfuron,
trifloxysulfuron or its agrochemically acceptable salts; and
c. another herbicide selected from a phenyl urea herbicide i.e. anisuron, buturon,
chlorbromuron, chloreturon, chlorotoluron, chloroxuron, daimuron, difenoxuron,
dimefuron, Diuron, fenuron, fluometuron, fluothiuron, isoproturon, linuron, methiuron,
methyldymron, metobenzuron, Metobromuron, metoxuron,monolinuron, monuron,
parafluron, phenobenzuron, Chlorbromuron, Neburon, Siduron, tetrafluron, thidiazuron,
trimefluor or a triazine herbicide selected from Atrazine, Metribuzin, Cynazine, Prometon,
Hexazinone, Simazine, Ametryn or its agrochemically acceptable salts, esters thereof and
d. one or more of agrochemically acceptable excipients
In another embodiment of the present invention, the synergistic herbicidal composition comprises of:
a. Tembotrione or its agrochemically acceptable salts present in the range 5% to 60% w/w;
and
b. at least one sulfonylurea herbicide selected from amidosulfuron, azimsulfuron,
bensulfuron, Halosulfuron methyl, imazosulfuron, mesosulfuron, methiopyrisulfuron,
monosulfuron, Metsulfuron, Chlorimuron-ethyl, ethoxysulfuron, flazasulfuron,
flucetosulfuron, flupyrsulfuron, foramsulfuron, Prosulfuron, Thifensulfuron-methyl,
Cyclosulfuron, Sulfometuron, Primisulfuron, nicosulfuron, orthosulfamuron,
oxasulfuron, primisulfuron, pyrazosulfuron, rimsulfuron, sulfometuron, sulfosulfuron,

trifloxysulfuron or its agrochemically acceptable salts, present in the range 5% to 70% w/w; and
c. another herbicide selected from a phenyl urea herbicide i.e. anisuron, buturon,
chlorbromuron, chloreturon, chlorotoluron, chloroxuron, daimuron, difenoxuron,
dimefuron, Diuron, fenuron, fluometuron, fluothiuron, isoproturon, linuron, methiuron,
methyldymron, metobenzuron, Metobromuron, metoxuron,monolinuron, monuron,
parafluron, phenobenzuron, Chlorbromuron, Neburon, Siduron, tetrafluron, thidiazuron,
trimefluor or a triazine herbicide selected from Atrazine, Metribuzin, Cynazine, Prometon,
Hexazinone, Simazine, Ametryn or its agrochemically acceptable salts, esters thereof,
present in the range 10% to 75% w/w and
d. one or more of agrochemically acceptable excipients
In another embodiment of the present invention, the synergistic herbicidal composition comprises of:
a. Tembotrione or its agrochemically acceptable salts present in the range 5% to 60% w/w;
and
b. at least one sulfonylurea herbicide selected from amidosulfuron, azimsulfuron,
bensulfuron, Halosulfuron methyl, imazosulfuron, mesosulfuron, methiopyrisulfuron,
monosulfuron, Metsulfuron, Chlorimuron-ethyl, ethoxysulfuron, flazasulfuron,
flucetosulfuron, flupyrsulfuron, foramsulfuron, Prosulfuron, Thifensulfuron-methyl,
Cyclosulfuron, Sulfometuron, Primisulfuron, nicosulfuron, orthosulfamuron,
oxasulfuron, primisulfuron, pyrazosulfuron, rimsulfuron, sulfometuron, sulfosulfuron,
trifloxysulfuron or its agrochemically acceptable salts, present in the range 5% to 70%
w/w; and
c. another herbicide selected from a phenyl urea herbicide i.e. anisuron, buturon,
chlorbromuron, chloreturon, chlorotoluron, chloroxuron, daimuron, difenoxuron,
dimefuron, Diuron, fenuron, fluometuron, fluothiuron, isoproturon, linuron, methiuron,
methyldymron, metobenzuron, Metobromuron, metoxuron,monolinuron, monuron,
parafluron, phenobenzuron, Chlorbromuron, Neburon, Siduron, tetrafluron, thidiazuron,
trimefluor or a triazine herbicide selected from Atrazine, Metribuzin, Cynazine, Prometon,
Hexazinone, Simazine, Ametryn or its agrochemically acceptable salts, esters thereof,
present in the range 10% to 75% w/w and

d. organosilicone surfactants as spreading and sticking agents and bio based efficacy
enhancing agents.
e. One or more of agrochemically acceptable excipients
In preferred embodiment of the present invention, the synergistic herbicidal composition comprises of:
a) Tembotrione or its agrochemically acceptable salts in the range 5% to 60% w/w;
b) at least one sulfonylurea herbicide selected from Halosulfuron methyl, in the range 5% to 70% w/w;
c) another herbicide selected from Diuron or Ametryn and its agrochemically acceptable salts, esters thereof, in the range 10% to 75% w/w.
d) one or more agrochemically acceptable excipients.
In another embodiment of the present invention, it is provided a process for preparation of the synergistic herbicidal composition comprising:
a. Tembotrione or its agrochemically acceptable salts present in the range 5% to 60% w/w;
and
b. at least one sulfonylurea herbicide selected from amidosulfuron, azimsulfuron,
bensulfuron, Halosulfuron methyl, imazosulfuron, mesosulfuron, methiopyrisulfuron,
monosulfuron, Metsulfuron, Chlorimuron-ethyl, ethoxysulfuron, flazasulfuron,
flucetosulfuron, flupyrsulfuron, foramsulfuron, Prosulfuron, Thifensulfuron-methyl,
Cyclosulfuron, Sulfometuron, Primisulfuron, nicosulfuron, orthosulfamuron,
oxasulfuron, primisulfuron, pyrazosulfuron, rimsulfuron, sulfometuron, sulfosulfuron,
trifloxysulfuron or its agrochemically acceptable salts, present in the range 5% to 70%
w/w; and
c. another herbicide selected from a phenyl urea herbicide i.e. anisuron, buturon,
chlorbromuron, chloreturon, chlorotoluron, chloroxuron, daimuron, difenoxuron,
dimefuron, Diuron, fenuron, fluometuron, fluothiuron, isoproturon, linuron, methiuron,
methyldymron, metobenzuron, Metobromuron, metoxuron,monolinuron, monuron,
parafluron, phenobenzuron, Chlorbromuron, Neburon, Siduron, tetrafluron, thidiazuron,
trimefluor or a triazine herbicide selected from Atrazine, Metribuzin, Cynazine, Prometon,
Hexazinone, Simazine, Ametryn or its agrochemically acceptable salts, esters thereof,
present in the range 10% to 75% w/w and

d. one or more of agrochemically acceptable excipients
In one embodiment of the present invention, the present herbicidal composition controls various weeds in field crops, turf grass, horticulture & forestry, etc.
In one embodiment of the present invention, the present herbicidal composition is stable and has enhanced shelf life.
In one embodiment of the present invention, the present herbicidal composition has enhanced efficacy and penetration capacity.
In one aspect/ another embodiment of the present invention, the present herbicidal composition can be applied to a plant/crop by spraying, rubbing, atomizing, irrigating, evaporating, dusting, fogging, broadcasting, pouring, mist blowing, soil mixing, foaming, painting, spreading-on, drenching, dipping or drip irrigation, etc.
In another embodiment of the present invention, higher dosage of the composition of the present invention is applied to the soil for treatment of weeds.
In another embodiment of the present invention, the herbicidal composition of the present invention further comprises an agrochemically acceptable excipients selected from the group consisting of safeners, anti-freezing agent, dispersing agents, wetting agents, antifoaming agents, biocides, thickeners, surfactants, preservatives, colorants, pigments, buffers, solvents, and the like. Additional components may also be included, e.g., protective colloids, adhesives, thickeners, thixotropic agents, penetration agents, stabilisers, sequestering agents. More generally, the active materials can be combined with any solid or liquid additive, formulation aids which complies with usual formulation techniques.
In yet another embodiment of the present invention, the present herbicidal composition can be formulated as one or more of Capsule suspension (CS), Dispersible concentrate (DC), Dustable powder (DP), Powder for dry seed treatment (DS), Emulsifiable concentrate (EC), Emulsifiable granule (EG), Emulsion water-in-oil (EO), Emulsifiable powder (EP), Emulsion for seed treatment (ES), Emulsion oil-in-water (EW), Flowable concentrate for seed treatment (FS), Granules (GR), Micro-emulsion (ME), Oil-dispersion (OD), Oil miscible flowable concentrate (OF), Oil miscible liquid (OL), Oil dispersible powder (OP), Suspension concentrate (SC),

Suspension concentrate for direct application (SD), Suspo-emulsion (SE), Water soluble granule (SG), Soluble concentrate (SL), Spreading oil (SO), Water soluble powder (SP), Water soluble tablet (ST), Ultra-low volume (ULV) suspension, Tablet (TB), Ultra-low volume (ULV) liquid, Water dispersible granules (WG), Wettable powder (WP), Water dispersible powder for slurry seed treatment (WS), Water dispersible tablet (WT), a mixed formulation of CS and SC (ZC) or A mixed formulation of CS and SE (ZE) and a mixed formulation of CS and EW (ZW).
DETAILED DESCRIPTION OF THE INVENTION
Discussed below are some representative embodiments of the present invention. The invention in its broader aspects is not limited to the specific details and representative methods. The illustrative examples are described in this section in connection with the embodiments and methods provided. The invention according to its various aspects is particularly pointed out and distinctly claimed in the appended claims read in view of this specification and appropriate equivalents.
All technical and scientific terms used herein have the same meanings as commonly understood by someone ordinarily skilled in the art to which the present subject matter belongs.
It is to be noted that, as used in the specification and the appended claims, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to a composition containing "a compound" includes a mixture of two or more compounds. It should also be noted that the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise.
The expression of various quantities in terms of "% w/w" or "%" means the percentage by weight, relative to the weight of the total solution or composition unless otherwise specified.
The term "control" as used in the present disclosure and claims, means to prevent the appearance of undesired vegetation or to reduce its growth or vigor.
The term "active ingredient" (a.i.) or "active agent" used herein refers to that component of the composition responsible for control and killing of weeds.
The term "formulation" and "composition" as used herein conveys the same meaning and can be used interchangeably.

The term herbicide, as used herein, shall mean an active ingredient that kills, controls or otherwise adversely modifies the growth of weeds. As used herein, a herbicidally effective or vegetation controlling amount is an amount of active ingredient that causes a "herbicidal effect," i.e., an adversely modifying effect and includes deviations from natural development, killing, regulation, desiccation, retardation.
The terms "plants" and "vegetation" include, but are not limited to, germinant seeds, emerging seedlings, plants emerging from vegetative propagules, and established vegetation.
The term "locus" as used herein shall denote the vicinity of a desired crop in which weed control, typically selective weed control, of weeds is desired. The locus includes the vicinity of desired crop plants wherein the weed infestation has either emerged or is yet to emerge.
The term "crop" shall include a multitude of desired crop plants or an individual crop plant growing at a locus.
The term "synergistic", as used herein, refers to the combined action of two or more active agents blended together and administered conjointly that is greater than the sum of their individual effects.
"Bioactive amounts" as mentioned herein means that amount which, when applied for treatment of crops, is sufficient to give effect in such treatment.
The term "seed treatment "comprises all suitable seed treatment techniques known in the art, such as, but not limited to, seed dressing, seed coating, seed dusting, seed soaking, seed film coating, seed multilayer coating, seed encrusting, seed dripping, and seed pelleting.
The term "health of a plant" or "plant health" is defined as a condition of the plant and/or its products. As a result of the improved health; yield, plant vigour, quality and tolerance to abiotic or biotic stress is increased.
According to the present invention, "increased yield" of a plant, in particular, of an agricultural, silvicultural and/or horticultural plant means that the yield of a product of the respective plant is increased by a measurable amount over the yield of the same product of the plant produced under the same conditions, but without the application of composition according to the present invention.
Increased yield can be characterized, among others, by the following improved proper-ties of the plant: increased plant weight, increased plant height, increased biomass such as higher overall

fresh weight (FW), increased number of flowers per plant, higher grain yield, more tillers or side shoots (branches), larger leaves, increased shoot growth, increased protein content, increased oil content, increased starch content, increased pigment content, increased leaf are index.
As per one embodiment, the active herbicidal compound as mentioned above to be used in the composition of the present invention, can be in the form of base or any salt form or ester form of the active which is known in the art.
In accordance with an embodiment of the present invention, there is provided a synergistic herbicidal composition comprising:
a. Tembotrione or its agrochemically acceptable salts present in the range 5% to 60% w/w;
and
b. at least one sulfonylurea herbicide selected from amidosulfuron, azimsulfuron,
bensulfuron, Halosulfuron methyl, imazosulfuron, mesosulfuron, methiopyrisulfuron,
monosulfuron, Metsulfuron, Chlorimuron-ethyl, ethoxysulfuron, flazasulfuron,
flucetosulfuron, flupyrsulfuron, foramsulfuron, Prosulfuron, Thifensulfuron-methyl,
Cyclosulfuron, Sulfometuron, Primisulfuron, nicosulfuron, orthosulfamuron,
oxasulfuron, primisulfuron, pyrazosulfuron, rimsulfuron, sulfometuron, sulfosulfuron,
trifloxysulfuron or its agrochemically acceptable salts, present in the range 5% to 70%
w/w; and
c. another herbicide selected from a phenyl urea herbicide i.e. anisuron, buturon,
chlorbromuron, chloreturon, chlorotoluron, chloroxuron, daimuron, difenoxuron,
dimefuron, Diuron, fenuron, fluometuron, fluothiuron, isoproturon, linuron, methiuron,
methyldymron, metobenzuron, Metobromuron, metoxuron,monolinuron, monuron,
parafluron, phenobenzuron, Chlorbromuron, Neburon, Siduron, tetrafluron, thidiazuron,
trimefluor or a triazine herbicide selected from Atrazine, Metribuzin, Cynazine, Prometon,
Hexazinone, Simazine, Ametryn or its agrochemically acceptable salts, esters thereof,
present in the range 10% to 75% w/w and
d. one or more of agrochemically acceptable excipients
The present invention provides a novel method of preparing synergistic herbicidal composition comprising above-mentioned class of active ingredients which are stable as well as provide desired bio-efficacy. Embodiments of the present invention may therefore ameliorate one or more of the above-mentioned problems.

In one embodiment of the present invention, the sulfonylurea herbicide is selected from amidosulfuron, azimsulfuron, bensulfuron, Halosulfuron methyl, imazosulfuron, mesosulfuron, methiopyrisulfuron, monosulfuron, Metsulfuron, Chlorimuron-ethyl, ethoxysulfuron, flazasulfuron, flucetosulfuron, flupyrsulfuron, foramsulfuron, Prosulfuron, Thifensulfuron-methyl, Cyclosulfuron, Sulfometuron, Primisulfuron, nicosulfuron, orthosulfamuron, oxasulfuron, primisulfuron, pyrazosulfuron, rimsulfuron, sulfometuron, sulfosulfuron, trifloxysulfuron, and is in the range 5% to 70%.
In preferred embodiment of the present invention, the sulfonylurea herbicide is Halosulfuron methyl or agrochemically acceptable salts of Halosulfuron.
In one embodiment of the present invention, the third herbicide or another herbicide is selected from selected from a phenyl urea herbicide or a triazine herbicide and is in the range 10% to
75%.
In preferred embodiment of the present invention, the phenyl urea herbicide is Diuron or its agrochemically acceptable salts.
In preferred embodiment of the present invention, the triazine herbicide is Ametryn or its agrochemically acceptable salts.
In another preferred embodiment, Tembotrione or its agrochemically acceptable salts, is present in an amount in the range of 20.0% to 28.0% of the total composition.
In another preferred embodiment, Halosulfuron or its agrochemically acceptable salts, is present in an amount in the range of 10% to 17.5% of the total composition.
In another preferred embodiment, Diuron or its agrochemically acceptable salts, is present in an amount in the range of 34% to 50% of the total composition.
In another preferred embodiment, Ametryn or its agrochemically acceptable salts, is present in an amount in the range of 34% to 50% of the total composition.
In another preferred embodiment, the composition of the present invention is effective against highly resistant and hard to kill weeds including Cyperus genera weeds.

In another preferred embodiment, the composition of the present invention is applied in one shot application for killing/ controlling highly resistant broad leaved weeds, grasses and sedges at lower application rates.
In one embodiment, the compositions according to the present invention act synergistically to control weeds in various crops.
In an especially preferred embodiment of the invention, the yield of the treated plant is increased.
In accordance with an embodiment of the invention, there is provided a synergistic herbicidal composition comprising active ingredients present in the weight ratios as given below; and one or more agrochemically acceptable excipients.

Tembotrione Sulfonylurea herbicide Phenyl urea herbicide or Triazine Herbicide

amidosulfuron, azimsulfuron, bensulfuron, Halosulfuron, imazosulfuron, mesosulfuron, methiopyrisulfuron, monosulfuron, Metsulfuron, Chlorimuron-ethyl, ethoxysulfuron, flazasulfuron, flucetosulfuron, flupyrsulfuron, foramsulfuron, Prosulfuron, Thifensulfuron-methyl, Cyclosulfuron, Sulfometuron, Primisulfuron, nicosulfuron, orthosulfamuron, oxasulfuron, primisulfuron, pyrazosulfuron, rimsulfuron, sulfometuron, sulfosulfuron, trifloxysulfuron anisuron, buturon, chlorbromuron, chloreturon, chlorotoluron, chloroxuron, daimuron, difenoxuron, dimefuron, Diuron, fenuron, fluometuron, fluothiuron, isoproturon, linuron, methiuron, methyldymron, metobenzuron, Metobromuron, metoxuron,monolinuron, monuron, parafluron, phenobenzuron, Chlorbromuron, Neburon, Siduron, tetrafluron, thidiazuron, trimefluor
Triazine
Atrazine, Metribuzin, Cynazine, Prometon, Hexazinone, Simazine, Ametryn(thiotriazine herbicide)
5-60% 5-70% 10-75%

In one embodiment of the present invention, the synergistic herbicidal composition of present invention is effective in controlling the growth of undesirable vegetation, e.g., in monocot and dicot crops including genetically modified and conventional or non-genetically modified varieties of sugarcane (Saccharum officinarum), corn/maize (Zea mays), Sorghum (Sorghum bicolor), Pearl millet (Pennisetum glaucum), Soybean (Glycin max), Peanut (Arachis hypogaea), Sunflower (Helianthus annuus), Green gram (Vigna radiata), Black gram (Vigna mungo), Chickpea (Cicer aritinum), Cowpea (Vigna unguiculata), Redgram (Cajanus cajan), Frenchbean (Phaseolus vulgaris), Indian bean (Lablab purpureus), potato, Horse gram (Macrotyloma uniflorum), Field pea (Pisum sativum), Cluster bean (Cyamopsis tetragonoloba), Lentils (Lens culinaris), Apple (Melus domestica), Banana (Musa spp.), Citrus groups (Citrus spp.), Grape (Vitis vinifera), Guava (Psidium guajava), Litchi (Litchi chinensis), Mango (Mangifera indica), Papaya (Carica papaya), Pineapple (Ananas comosus), Pomegranate (Punica granatum), Sapota (Manilkara zapota), Tea (Camellia sinensis), Coffea (Coffea Arabica), Coconut (Coco nucifera).
In another embodiment, the herbicidal composition of the present invention maybe used to target weeds among the crops such corn, rice, wheat, barley, rye, oat, sorghum, cotton, soybean, peanut, buckwheat, beet, rapeseed, sunflower, sugar cane, tobacco, etc.; vegetables: solanaceous vegetables such as eggplant, tomato, pimento, pepper, potato, etc., cucurbit vegetables such as cucumber, pumpkin, zucchini, water melon, melon, squash, etc., cruciferous vegetables such as radish, white turnip, horseradish, kohlrabi, Chinese cabbage, cabbage, leaf mustard, broccoli, cauliflower, etc., asteraceous vegetables such as burdock, crown daisy, artichoke, lettuce, etc, liliaceous vegetables such as green onion, onion, garlic, and asparagus, ammiaceous vegetables such as carrot, parsley, celery, parsnip, etc., chenopodiaceous vegetables such as spinach, Swiss chard, etc., lamiaceous vegetables such as Perilla frutescens, mint, basil, etc, strawberry, sweet potato, Dioscoreajaponica, colocasia, etc., flowers, foliage plants, turf grasses, fruits: pome fruits such apple, pear, quince, etc, stone fleshy fruits such as peach, plum, nectarine, Prunus mume, cherry fruit, apricot, prune, etc., citrus fruits such as orange, lemon, rime, grapefruit, etc., nuts such as chestnuts, walnuts, hazelnuts, almond, pistachio, cashew nuts, macadamia nuts, etc. berries such as blueberry, cranberry, blackberry, raspberry, etc., grape, kaki fruit, olive, plum, banana, coffee, date palm, coconuts, etc. , trees other than fruit trees; tea, mulberry, flowering plant, trees such as ash, birch, dogwood, Eucalyptus, Ginkgo biloba, lilac, maple, Quercus, poplar, Judas tree, Liquidambar formosana, plane tree, zelkova, Japanese arborvitae, fir wood, hemlock, juniper, Pinus, Picea, and Taxus cuspidate, etc.

If not stated otherwise, the compositions of the invention are suitable for application in any variety of the aforementioned crop plants.
Suitable targets for seed treatment are one or more of various crop seeds, fruit species, vegetables, spices and ornamental seed, for example corn/maize (sweet and field), durum wheat, soybean, groundnut, wheat, barley, oats, rye, triticale, bananas, rice, cotton, sunflower, potatoes, pasture, alfalfa, grasses, turf, sorghum, rapeseed, Brassica spp., sugar beet, egg-plants, tomato, lettuce, iceberg lettuce, pepper, cucumber, squash, melon, bean, dry-beans, peas, leek, garlic, onion, cabbage, carrot, tuber such as sugar cane, tobacco, coffee, turf and forage, cruciferous, cucurbits, grapevines, pepper, fodder beet, oil seed rape, pansy, impatiens, petunia and geranium.
In one embodiment, the synergistic herbicidal composition of present invention is effective against monocots, dicots and sedges weeds and are selected from Abutilon indicum, Acalypha indica, Acanthospermum hispidum, Achyranthes aspera, Aerva tomentosa, Ageratum conyzoides, Alhagi camelorum, Amaranthus hybridus, Amaranthus spinosus, Amaranthus viridis, Ammannia baccifera, Anagallis arvensis, Argemone mexicana, Artemisia nilagiricia, Asphodelus tenuifolius, Avena fatua, Avena ludoviciana, Bidens pilosa, Boerhaavia diffusa, Boerhavia repanda, Brachiaria mutica, Brassica kaber, Bromus tectorum, Calotropis gigantea, Cannabis sativa, Carthamus axyacantha, Cassia tora, Celosia argentea, Centella asiatica, Chenopodium album, Chenopodium murale, Chloris barbata, Chrozophora rottlerii, Cichorium intybus, Cirsium arvense, Clitoria ternatea, Cnicus arvensis, Commelina benghalensis, Commelina communis, Convolvulus arvensis, Conyza canadensis, Corchorus acutangulus, Coronopus didymus, Crotalaria serice, Cucumis callosus, Cuscuta campestris, Cuscuta chinensis, Cynodon dactylon, Cyanotis axillaris, Cyperus esculenthus, Cyperus iria, Cyperus rotundus, Dactyloctenium aegyptium, Datura stramonium, Daucus carota, Digera arvensis, Digitaria sanguinalis, Dinebra retroflexa, Echinochola colonum, Echinochola crusgalli, Eclipta alba, Eichhornia crassipes, Elephantopus scaber, Eleusine indica, Eragrostis major, Euphorbia geniculata, Euphorbia hirta, Fimbristylis miliacea, Fumaria indica, Gynandropsis gynandra, Heliotropium indicum, Indigofera glandulosa, Ipomea aquatica, Lantana camara, Lathyrus aphaca, Launaea asplenifolia, Launaea nudicaulis, Leucas aspera, Marsilea quadrifoliata, Medicago denticulate, Mimosa pudica, Melilotus alba, Melilotus indica, Ocimum canum, Oenothera biennis, Opuntia dillenil, Orobanche ramosa, Oryza longistaminata, Oryza sativa, Oxalis corniculata, Oxalis latifolia, Parthenium hysterophorus, Paspalum sanguinale, Phalaris minor, Phyllanthus niruri, Physalis minima, Polypogon monspeliensis, Portulaca oleracea,

Prosopisjuliflora, Rumex dentatus, Saccharum spontaneum, Steari a glauca, Seteria viridis, Sida spinosa, Silene antirrhina, Sisymbrium irio, Solanum nigrum, Solanum surattense, Sonchus oleraceous, Sorghum halepense, Spergula arvensis, Sphenocleazeylanica Gaertn, Striga asiatica, Tagetes minuta, Trianthema monogyna, Trianthema portulacastrum, Tribulus terrestris, Trigonelia polycerata, Vernonia cinerea, Vicia sativa and Xanthium strumarium.
The target weeds may be selected from Alopecurus myosuroides Huds. (blackgrass, ALOMY), Amaranthus palmeri (Palmer amaranth, AMAPA) Amaranthus viridis (slender amaranth, AMAVI), Avena fatua (wild oat, AVEFA), Brachiaria decumbens Stapf. or Urochloa decumbens (Stapf), Brachiaria brizantha or Urochloa brizantha, Brachiaria platyphylla (Groseb.) Nash or Urochloa platyphylla (broadleaf signalgrass, BRAPP), Brachiaria plantaginea. or Urochloa plantaginea (alexandergrass, BRAPL), Cenchrus echinatus (southern sandbur, CENEC), Digitaria horizontalis Willd. (Jamaican crabgrass, DIGHO), Digitaria insularis (sourgrass, TRCIN), Digitaria sanguinalis (large crabgrass, DIGSA), Echinochloa crus-galli (barnyardgrass, ECHCG), Echinochloa colonum (junglerice, ECHCO), Eleusine indica Gaertn. (goosegrass, ELEIN), Lolium multiflorum Lam. (Italian ryegrass, LOLMU), Panicum dichotomiflorum Michx. (fall panicum, PANDI), Panicum miliaceum L. (wild-proso millet, PANMI), Sesbania exaltata (hemp sesbania, SEBEX), Setaria faberi Herrm. (giant foxtail, SETFA), Setaria viridis (green foxtail, SETVI), Sorghum halepense (Johnsongrass, SORHA), Sorghum bicolor, Moench ssp., Arundinaceum (shattercane, SORVU), Cyperus esculentus (yellow nutsedge, CYPES), Cyperus rotundus (purple nutsedge, CYPRO), Abutilon theophrasti (velvetleaf, ABUTH), Amaranthus species (pigweeds and amaranths, AMASS), Ambrosia artemisiifolia L. (common ragweed, AMBEL), Ambrosia psilostachya DC. (western ragweed, AMBPS), Ambrosia trifida (giant ragweed, AMBTR), Anoda cristata (spurred anoda, ANVCR), Asclepias syriaca (common milkweed, ASCSY), Bidens pilosa (hairy beggarticks, BIDPI), Borreria species (BOISS), Borreria alata or Spermacoce alata Aubl. or Spermacoce latifolia (broadleaf buttonweed, BOILF), Chenopodium album L. (common lambsquarters, CHEAL), Cirsium arvense (Canada thistle, CIRAR), Commelina benghalensis (tropical spiderwort, COMBE), Datura stramonium (jimsonweed, DATST), Daucus carota (wild carrot, DAUCA), Euphorbia heterophylla (wild poinsettia, EPHHL), Euphorbia hirta or Chamaesyce hirta (garden spurge, EPHHI), Euphorbia dentata Michx. (toothed spurge, EPHDE), Erigeron bonariensis or Conyza bonariensis (hairy fleabane, ERIBO), Erigeron canadensis or Conyza canadensis (horseweed, ERICA), Conyza sumatrensis (tall fleabane, ERIFL), Helianthus annuus (common sunflower, HELAN), Jacquemontia tamnifolia (smallflower morningglory, IAQTA), Ipomoea hederacea (ivyleaf

morningglory, IPOHE), Ipomoea lacunosa (white morningglory, IPOLA), Lactuca serriola (prickly lettuce, LACSE), Portulaca oleracea (common 5 purslane, POROL), Richardia species (pusley, RCHSS), Salsola tragus (Russian thistle, SASKR), Sidaspecies (sida, SIDSS), Sida spinosa (prickly sida, SIDSP), Sinapis arvensis (wild mustard, SINAR), Solanum ptychanthum (eastern black nightshade, SOLPT), Tridax procumbens (coat buttons, TRQPR), Rumex dentatus (RUMDE)or Xanthium strumarium (common cocklebur, XANST).
In one embodiment, the synergistic herbicidal composition of present invention is in particular useful against annual and perennial grasses and broad-leaved weeds in post-emergence application.
The formulation or composition ingredients are selected to be consistent with the physical proper ties of the active ingredients, mode of application and environmental factors such as Soil type, moisture and temperature. Useful formulations include liquids such as Solutions (including emulsifiable concentrates), Suspensions, emulsions (including microemulsions and/or Suspo-emulsions) and the like which optionally can be thickened into gels. Useful formulations further include Solids such as dusts, powders, granules, pellets, tablets, films (including seed coatings), and the like which can be water-dispersible ("wettable') or water-soluble.
In another embodiment of the present invention, the invention further provides the process for preparation of the said formulation, wherein, the formulation can be one or more of Capsule suspension (CS), Dispersible concentrate (DC), Powder for dry seed treatment (DS), Emulsifiable concentrate (EC), Emulsion, water in oil (EO), Emulsion for foliar spray (ES), Emulsion, oil in water (EW), Flowable suspension/concentrate for foliar spray (FS), Granule/ soil applied (GR), Controlled (Slow or Fast) release granules (CR), Jambo balls or bags (bags in water soluble pouch), Solution for foliar spray (LS), Micro-emulsion (ME), Oil dispersion (OD), Oil miscible flowable concentrate (oil miscible suspension (OF), Oil miscible liquid (OL), Suspension concentrate (= flowable concentrate) (SC), Suspo-emulsion (SE), Water soluble granule (SG), Soluble concentrate (SL), Water soluble powder (SP), Water dispersible granule (WG or WDG), Wettable powder (WP), Water dispersible powder for slurry treatment (WS), A mixed formulation of CS and SC (ZC), A mixed formulation of CS and SE (ZE), A mixed formulation of CS and EW (ZW).
In another embodiment, the composition of present invention is selected from Capsule suspension (CS), Dispersible concentrate (DC), Powder for dry seed treatment (DS),

Emulsifiable concentrate (EC), Emulsion, water in oil (EO), Emulsion for foliar spray (ES), Emulsion, oil in water (EW), Flowable suspension/concentrate for foliar spray (FS), Granule/ soil applied (GR), Controlled (Slow or Fast) release granules (CR), Jambo balls or bags (bags in water soluble pouch), Solution for foliar spray (LS), Micro-emulsion (ME), Oil dispersion (OD), Oil miscible flowable concentrate (oil miscible suspension (OF), Oil miscible liquid (OL), Suspension concentrate (= flowable concentrate) (SC), Suspo-emulsion (SE), Water soluble granule (SG), Soluble concentrate (SL), Water soluble powder (SP), Water dispersible granule (WG or WDG), Wettable powder (WP), Water dispersible powder for slurry treatment (WS), A mixed formulation of CS and SC (ZC), A mixed formulation of CS and SE (ZE), A mixed formulation of CS and EW (ZW).
In one embodiment, the synergistic herbicidal composition of present invention can be applied as foliar spray pre-emergence, early post emergence or late post emergence. It can be also applied as blanket spray over the crop and weed or in between the rows as directed application. The present compositions can be applied to weeds or their locus by the use of conventional ground or aerial duster, sprayers, and granules applicators by addition to irrigation and by other conventional means known to those skilled in art.
The present inventors believe that the composition of the present invention surprisingly results in a synergistic action. The composition of the present invention allows for a broad spectrum of weed control and has surprisingly improved plant yield.
The composition of the present invention in addition to bioactive amounts of active ingredients, further comprises agrochemically acceptable excipients including but not limited to safeners, surfactant/dispersing agent, anti-freezing agent, anti-foaming agent, wetting agent, suspension aid, antimicrobial/anti-bacterial agent, thickener, quick coating agent or sticking agents/sticker, spreader, binders, adjuvants, fillers, emulsifiers, coloring pigments, dyes, preservatives, buffering agent and mixtures thereof.
Suitable liquid carriers that may be employed in a composition of the present invention may include water or organic solvents. The organic solvents include, but are not limited to, petroleum fractions or hydrocarbons such as mineral oil, aromatic solvents, paraffinic oils, and the like; vegetable oils such as soybean oil, rapeseed oil, olive oil, castor oil, sunflower seed oil, coconut oil, corn oil, cottonseed oil, linseed oil, palm oil, peanut oil, safflower oil, sesame oil, tung oil and the like; esters of the above vegetable oils; esters of monoalcohols or dihydric, trihydric, or other lower polyalcohols (4-6 hydroxy containing), such as 2-ethyl hexyl stearate, n-butyl oleate,

isopropyl myristate, propylene glycol dioleate, di-octyl succinate, di-butyl adipate, di-octyl phthalate and the like; esters of mono, di and polycarboxylic acids and the like. Organic solvents include, but are not limited to toluene, xylene, petroleum naphtha, crop oil, acetone, methyl ethyl ketone, cyclohexanone, trichloroethylene, perchloroethylene, ethyl acetate, amyl acetate, butyl acetate, propylene glycol monomethyl ether and diethylene glycol monomethyl ether, methyl alcohol, ethylalcohol, isopropyl alcohol, amyl alcohol, ethylene glycol, propylene glycol, glycerine, N-methyl-2-pyrrolidinone, N,N-dimethyl alkylamides, dimethyl sulfoxide.
Solid carriers that may be employed in the compositions of the present invention may include but are not limited to attapulgite, pyrophyllite clay, silica, kaolin clay, kieselguhr, chalk, diatomaceous earth, lime, calcium carbonate, bentonite clay, Fuller's earth, talc, cottonseed hulls, wheat flour, soybean flour, pumice, wood flour, walnut shell flour, lignin, cellulose etc.
In an embodiment, the safener may be selected from benoxacor, BPCMS, cloquintocet, cyometrinil, cyprosulfamide, dichlormid, dicyclonon, dietholate, fenchlorazole, fenclorim, flurazole, fluxofenim, furilazole, Isoxadifen ethyl, jiecaowan, Jiecaoxi, mefenpyr, mephenate, metcamifen, naphthalic anhydride, oxabetrinil and their salts and esters.
In one embodiment of the present invention, safeners are present in the range of 2.5-30% of the total composition.
Surfactants that are used as dispersants have the ability to adsorb strongly onto a particle surface and provide a charged or stearic barrier to re-aggregation of particles. The most commonly used surfactants are anionic, non-ionic, or mixtures of the two types. For wettable powder formulations, the most common dispersants are sodium lignosulphonates. For suspension concentrates, very good adsorption and stabilization are obtained using polyelectrolytes, such as sodium naphthalene sulphonate formaldehyde condensates. Tristyrylphenolethoxylate phosphate esters are also used. Nonionics such as alkylarylethylene oxide condensates and EO-PO 10 block copolymers are sometimes combined with anionics as dispersants for suspension concentrates. In recent years, new types of very high molecular weight polymeric surfactants have been developed as dispersants. These have very long hydrophobic 'backbones' and a large number of ethylene oxide chains forming the 'teeth' of a 'comb' surfactant. These high molecular weight polymers can give very good long-term stability to suspension concentrates because the hydrophobic backbones have many anchoring points onto the particle surfaces. Examples of dispersants used herein include but not limited to sodium lignosulphonates; Tristyrylphenol

Ethoxylate Amine salt of phosphate tristyryl phenol ethylated /Acrylic Copolymer/ Ethoxylated Tristryl phenol Sulphate,Naphthalene sulfonic acid,sodium salt condensate with formaldehyde,Ethoxylated oleyl cetyl alcohol, Polyalkelene glycol ethersodium naphthalene sulphonate formaldehyde condensates; tristyrylphenolethoxylate phosphate esters; aliphatic alcohol ethoxylates; alky ethoxylates; EO-PO block copolymers; and graft copolymers or mixtures thereof.
In one embodiment of the present invention, surfactants/dispersing agents are present in the range of 0.5-10% of the total composition.
Emulsifiers are added to buffering agent as used herein is selected from group consisting of calcium hydroxyapatite, Potassium Dihydrogen Phosphate, Sodium Hydroxide, carbonated apatite, calcium carbonate, sodium bicarbonate, tricalcium phosphate, calcium phosphates, carbonated calcium phosphates, amine monomers, lactate dehydrogenase and magnesium hydroxide.
Emulsifier are further added to Oil Dispersion formulations for uniform emulsions and are selected from Castor oil ethoxylates, Calcium alkyl benzene sulfonate or mixtures thereof, in the range from 0.1-10% of the total composition.
Anti-freezing agent as used herein can be selected from the group consisting of polyethylene glycols, methoxypolyethylene glycols, propylene glycol, polypropylene glycols, polybutylene glycols, glycerine, ethylene glycol and mixtures thereof.
In one embodiment of the present invention, Anti-freezing agents are present in the range of 0.1-20%) of the total composition.
Water-based formulations often cause foam during mixing operations in production. In order to reduce the tendency to foam, anti-foam agents are often added either during the production stage or before filling into bottles. Generally, there are two types of anti-foam agents, namely silicones and non-silicones. Silicones are usually aqueous emulsions of dimethyl polysiloxane while the nonsilicone anti-foam agents are water-insoluble oils, such as octanol and nonanol, or silica. In both cases, the function of the anti-foam agent is to displace the surfactant from the air-water interface.
A wetting agent is a substance that when added to a liquid increases the spreading or penetration power of the liquid by reducing the interfacial tension between the liquid and the surface on which it is spreading. Wetting agents are used for two main functions in agrochemical

formulations: during processing and manufacture to increase the rate of wetting of powders in water to make concentrates for soluble liquids or suspension concentrates; and during mixing of a product with water in a spray tank or other vessel to reduce the wetting time of wettable powders and to improve the penetration of water into water-dispersible granules. Examples of wetting agents used in wettable powder, suspension concentrate, and water-dispersible granule formulations include but not limited to sodium lauryl sulphate; sodium dioctylsulphosuccinate; Tristyrylphenol ethoxylate non-ionic emulsifier/ mixture of non-ionic surfactants & alkoxylated Alcohol/Block copolymer, alkyl phenol ethoxylates; and aliphatic alcohol ethoxylates and the salts thereof and mixtures thereof, which are standard in agriculture or mixtures thereof.
In one embodiment of the present invention, wetting agents are present in the range of 0.5-10% of the total composition.
Suspension aid in the present description denotes a natural or synthetic, organic or inorganic material with which the active substance is combined in order to facilitate its application to the plant, to the seeds or to the soil. This carrier is hence generally inert, and it must be agriculturally acceptable, in particular to the plant being treated. The carrier may be solid (clays, natural or synthetic silicates, silica, resins, waxes, solid fertilizers, and the like or mixtures thereof) or liquid (water, alcohols, ketones, petroleum fractions, aromatic or paraffinic hydrocarbons, chlorinated hydrocarbons, liquefied gases, and the like or mixtures thereof).
Biocides / Microorganisms cause spoilage of formulated products. Therefore, antimicrobial/anti-bacterial agents are used to eliminate or reduce their effect. Examples of such agents include, but are not limited to: propionic acid and its sodium salt; sorbic acid and its sodium or potassium salts; benzoic acid and its sodium salt; p-hydroxy benzoic acid sodium salt; methyl p-hydroxy benzoate; and biocide such as sodium benzoate, l,2-benzisothiazoline-3-one, 2-methyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one, potassium sorbate, parahydroxy benzoates, Benzisothiazolin-3-one / Formaldehyde or mixtures thereof.
In one embodiment of the present invention, antimicrobial/anti-bacterial agents are present in the range of 0.01-1% of the total composition.
Thickeners or gelling agents are used mainly in the formulation of suspension concentrates, emulsions and suspo-emulsions to modify the rheology or flow properties of the liquid and to prevent separation and settling of the dispersed particles or droplets. Thickening, gelling, and anti-settling agents generally fall into two categories, namely water-insoluble particulates and

water-soluble polymers. It is possible to produce suspension concentrate formulations using clays and silicas. Examples of these types of materials, include, but are limited to, montmorillonite, bentonite clay; magnesium aluminum silicate; and attapulgite. Water soluble polysaccharides have been used as thickening-gelling agents for many years. The types of polysaccharides most commonly used are natural extracts of seeds and seaweeds are synthetic derivatives of cellulose or mixtures thereof. Examples of these types of materials include, but are not limited to, guar gum; locust bean gum; carrageenam; xanthan gum; alginates; polysaccharides, methyl cellulose; sodium carboxymethyl cellulose (SCMC); hydroxyethyl cellulose (HEC), bentonite clay or mixtures thereof. Other types of anti-settling agents are based on modified starches, polyacrylates, polyvinyl alcohol and polyethylene oxide or mixtures.
In one embodiment of the present invention, thickeners or gelling agents are present in the range of 0.01-3% of the total composition.
Defoamer/Antifoaming agent are used in agro-chemical formulations to prevent foaming during mixing and spraying stage and generally added to the composition as foam formation prevents the efficient filling of a container. Antifoaming agent are selected form the group consisting of silicon emulsion based anti-foam agents, Siloxane polyalkyleneoxide, trisiloxane ethoxylates and mixtures thereof
In one embodiment of the present invention, antifoaming agents are present in the range of 0.01-1% of the total composition.
Filler is added to the composition to improve the handling and storage characteristics of the composition. Fillers also add mass and/or volume to the active ingredient in order to facilitate precise measurement of the doses. Suitable fillers that may be used in the composition of the present invention include, but not limited to, Silicon Dioxide, bentonite clay, china clay, silica, kaolin, talc, starch, diatomaceous earth and mixtures thereof.
In one embodiment of the present invention, fillers are present in the range of 0.1-5% of the total composition.
An adjuvant used in the present invention is any material that is added to an agrochemical formulation to enhance or modify the performance of the formulation. An adjuvant used in the present invention to make it a safer to ecological environmental, having low toxicity and having no phytotoxicity effects on any part of the plant.

Extender or sticker/sticking agent keeps herbicide active on a target for an extended period or on waxy foliage. Sticker allows pesticides to stay on a treated surface longer. Some stickers help to hold solid particles to a treated surfaces. This reduces the amount that washes off due to rain or irrigation. Others reduce evaporation and/or slow breakdown by sunlight.
Spreader allows a pesticide to form a uniform layer over a treated surface. Spreaders such as Silicone Ethoxylated Oil lowers the surface tension of spray solutions beyond that which is achievable with conventional non-ionic surfactants. In fact, it has the potential to provide adequate coverage in many low volume spray applications at rates between 0.025% and 0.1% . It decreases the surface tension of spray solutions to much lower values, in comparison to conventional adjuvants. This results in significantly enhanced spreading of spray solutions over the treated plant surfaces which carries tank mix products to morphologically complex and thus difficult-to-reach parts of the plant.
Advantages of organosilicone adjuvants (OSSA):
Quick spreading and wetting
Uniform droplet distribution
Absorption on leaf and stem surfaces
Known benefits: Increases pesticide efficacy
In yet another embodiment of the present invention, the agrochemically acceptable adjuvants-Silicone Ethoxylated Oil, Polyvinyl Pyrrolidon, Polyvinyl Alcohol, Blend of poly terpene resin or mixtures thereof, are present in the range of 0.1-10%).
In another embodiment of the present invention, the herbicidal composition of the present invention further comprises organosilicone surfactants/adjuvant as spreading and sticking agents and bio based efficacy enhancing agents.
In another embodiment of the present invention, the herbicidal composition of the present invention further comprises trisiloxane ethoxylate as organosilicone surfactant/adjuvant.
In another embodiment of the present invention, the herbicidal composition of the present invention further comprises blend of polyterpene resin (natural oils) as bio based efficacy enhancing agents.

The quick coating agent can be a conventionally available sticker, for example polyesters,
polyamides, poly- carbonates, polyurea and polyurethanes, acrylate polymers and copolymers,
styrene copolymers, butadiene copolymers, polysaccharides such as starch and cellulose
derivatives, vinylalcohol, vinylacetate and vinylpyrrolidone polymers and copolymers,
polyethers, epoxy, phenolic and melamine resins, polyolefins and define copolymersand
mixtures thereof. Examples of preferred polymers are acrylate polymers such as
poly(methacrylate), poly(ethyl methacrylate), poly(methylmethacrylate), acrylate copoylmers
and styrene-acrylic copolymers as defined herein below, poly(styrenecomaleic anhydride),
cellulosic polymers such as ethyl cellulose, cellulose acetate, cellulose acetatebutyrate, acetylated
mono, di, and triglycerides, poly(vinylpyrrolidone), vinyl acetate polymers and copolymers,
poly(alkylene glycol), styrene butadiene copolymers, poly(orthoesters), alkyd resins, and
mixtures of two or more of these. Polymers that are biodegradable are also useful in the present
invention. As used herein, a polymer is biodegradable if is not water soluble, but is degraded
over a period of several weeks when placed in an application environment. Examples of
biodegradable polymers that are useful in the present invention include biodegradable polyesters,
starch, polylactic acid starch blends, polylactic acid, poly(lactic acid-glycolic acid) copolymers,
polydioxanone, cellulose esters, ethyl cellulose, cellulose acetate butyrate, starch esters, starch
esteraliphatic polyester blends, modified corn starch, polycaprolactone,
poly(namylmethacrylate), wood rosin, polyanhydrides, polyvinylalcohol,
polyhydroxybutyratevalerate, biodegradable aliphatic polyesters, and polyhydroxybutyrate or mixtures thereof.
The solvent for the formulation of the present invention may include water, water soluble alcohols and dihydroxy alcohol ethers. The water-soluble alcohol which can be used in the present invention may be lower alcohols or water-soluble macromolecular alcohols. The term "lower alcohol", as used herein, represents an alcohol having 1-4 carbon atoms, such as methanol, ethanol, n-propanol, isopropanol, n-butanol, tert-butanol, etc. Macromolecular alcohol is not limited, as long as it may be dissolved in water in a suitable amount range, polyethylene glycol, sorbitol, glucitol, etc. The examples of suitable dihydroxy alcohol ethers used in the present invention may be dihydroxy alcohol alkyl ethers or dihydroxy alcohol aryl ethers. The examples of dihydroxy alcohol alkyl ether include ethylene glycol methyl ether, diethylene glycol methyl ether, propylene glycol methyl ether, dipropylene glycol methyl ether, ethylene glycol ethyl ether, diethylene glycol ethyl ether, propylene glycol ethyl ether, dipropylene glycol ethyl ether, etc. The examples of dihydroxy alcohol aryl ethers include ethylene glycol phenyl ether,

diethylene glycol phenyl ether, propylene glycol phenyl ether, dipropylene glycol phenyl ether, and the like. Any of the above mentioned solvent can be used either alone or in combination thereof.
In an embodiment, the combination of the present invention may be combined with at least another active ingredient such as those selected from but not limited to herbicide, insecticide, fungicide, biological agent, plant growth activator, fertilizers or combinations thereof.
The method of control of the present invention may be carried out by spraying the suggested tank mixes, or the individual herbicides may be formulated as a kit-of-parts containing various components that may be mixed as instructed prior to spraying.
In a specific embodiment, the herbicidal composition of the present invention may be applied in an amount of about 500 g/ha.
The described compositions may be made at the time of use, or diluted, or else they can be concentrated compositions, or so-called "ready-to-use" compositions, that is to say, ready for marketing. In an embodiment, the formulation may be obtained by combining a synergistic amount of the active ingredients with an agriculturally acceptable carrier, a surfactant or other application-promoting adjuvant customarily employed in formulation technology. The compositions according to the invention do not only comprise ready-to-use compositions which can be applied with suitable apparatus to the plant or the seed, but also commercial concentrates which have to be diluted with water prior to use.
The treatment according to the invention of the plants and plant parts with the active compounds or compositions is carried out directly or by action on their surroundings, habitat or storage space using customary treatment methods, for example by spraying, rubbing, atomizing, irrigating, evaporating, dusting, fogging, broadcasting, pouring, mist blowing, soil mixing, foaming, painting, spreading-on, drenching, dipping or drip irrigation and, in the case of propagation material, in particular in the case of seeds, a water-soluble powder for slurry treatment, by incrusting, by coating with one or more layers, etc. It is furthermore possible to apply the active compounds by the ultra-low volume method, or to inject the active compound preparation or the active compound itself into the soil.
In an embodiment, the kit-of-parts comprises an instructions manual, said instructions manual comprising instructions directing a user to admix the components before being used.

The synergistic herbicidal composition of the present invention can be also employed to promote non selection and selective herbicidal action in fallow land, non-cropped industrial land, road and highway sides.
The process for preparing the present novel synergistic herbicidal composition can be modified accordingly by any person skilled in the art based on the knowledge of manufacturing of the formulation. However, all such variation and modification are still covered by the scope of present invention.
Thus, before describing the present invention in detail, it is to be understood that this invention is not limited to particularly exemplified systems or process parameters that may of course, vary. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments of the invention only and is not intended to limit the scope of the invention in any manner. The use of examples anywhere in this specification including examples of any terms discussed herein is illustrative only, and in no way limits the scope and meaning of the invention or of any exemplified term. Likewise, the invention is not limited to various embodiments given in this specification. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. In the case of conflict, the present document, including definitions will control.
In order that the present invention may be more readily understood, reference will now be made, by way of example, to the following description. It will be understood that the specification and examples are illustrative but not limitative of the present invention and that other embodiments within the spirit and scope of the invention will suggest themselves to those skilled in the art. Other embodiments can be practiced that are also within the scope of the present invention. The following illustrations of examples are intended to illustrate a stable synergistic fungicidal composition, but in no way limit the scope of the present invention.
Example 1:
A stable Suspension Concentrate (SC) of Tembotrione, Halosulfuron Methyl and Diuron according to the present invention was prepared as follows:

12 Polysaccharides/carboxymethyl cellulose/Bentonite Clay 0.01-3%
13 DM water Q.stomake 100
Total 100

Sr. No. Ingredients Quantity % w/w
1 Tembotrione Technical 5%
2 Halosulfuron Methyl Technical 5%
3 Diuron Technical 20%
4 Isoxadifen ethyl 2.50%
5 Dispersing Agent- Tristyrylphenol Ethoxylate Amine salt of phosphate 3%
6 Wetting Agent- Block copolymer, 2%
7 Antifoaming Agent-Siloxane polyalkyleneoxide 0.20%
8 Antifreezing Agent- Propylene Glycol 5%
9 Adjuvants-Ethoxylated Silicone Oil 1%
10 Filler- China -Clay 1%
11 Anti-bacterial - Benzisothiazolin-3-one 0.10%
12 Polysaccharides 0.10%
13 DM water Q.stomake 100
Total 100
Process: Required quantity of water, biocide, and defoamer followed by addition of gum powder are homogenized with stirring to obtain a gum solution (Gum Solution should be made 12-18 hour prior to use). Required quantity of DM water, wetting agent, dispersing agent & suspending agent was added into the charged vessel followed by homogenization for a period of ranging between 45 - 60 minutes using high shear homogeniser to obtain a homogenized slurry. Technical and other remaining adjuvants excluding 'antifreeze & thickeners' were added into the homogenized slurry to obtain a uniform slurry. Half of the quantity of required antifoam agent was added into the slurry. The uniform slurry mixture was then passed through appropriate particle size reduction equipment (Dyno-Mill) until the granule material of the desired particle size was achieved. Remaining half of the quantity of required antifoam agent along with the antifreeze agent was added to the granule material as obtained. Gum solution as obtained in the first step was then added to obtain the suspension concentrate.

Process: Required quantity of filler, wetting agent, dispersing agent, and suspending agent, adjuvants & technical was mixed in a premixing blender for homogenization for a period of 30 minutes to obtain a pre-blended material. The pre-blended material as obtained in the first step was blended through Jet mill/ air classifier mills followed by blending in post blender for a period of-1.5 hour to obtain a homogeneous mixture. Required quantity of water (qs) was then added to make a dough. The dough was then passed through the extruder to obtain granules of required size. Wet granules as obtained were passed through the fluidised bed drier followed by grading using vibrating screens to obtain the wettable granules.
Example 3:
A stable Oil Dispersion formulation (OD) of Tembotrione, Halosulfuron Methyl and Diuron according to the present invention was prepared as follows:

OD(Oi Dispersion)
Sr.
No. Component Composition

1 2 3 4 5
1 Tembotrione Technical 5 5 10 10 15
2 Halosulfuron Methyl Technical 5 10 10 15 15
3 Diuron Technical 20 15 20 10 10
Isoxadifen ethyl 2.5 2.5 5 5 7.5
4 Ethoxylated oleyl cetyl alcohol 3.00 3.00 3.00 3.00 3.00
5 Polyalkelene glycol ether 4.00 4.00 4.00 4.00 4.00
6 Poly vinyl pyrrolidone 1.00 1.00 1.00 1.00 1.00
7 Calcium alkyl benzene sulfonate 3.00 3.00 3.00 3.00 3.00
8 Castor oil ethoxylates 2.00 2.00 2.00 2.00 2.00
9 Silicone based antifoam 0.10 0.10 0.10 0.10 0.10
10 Propylene glycol 5.00 5.00 5.00 5.00 5.00
11 Soyabean Oil QSto
Make
100 QSto
Make
100 QSto
Make
100 QSto
Make
100 QSto
Make
100

13 DM water Q.s to make 100
Total 100
Process: Required quantity of water, biocide, and defoamer followed by addition of gum powder are homogenized with stirring to obtain a gum solution (Gum Solution should be made 12-18 hour prior to use). Required quantity of DM water is charged for Flowable concentrate/ Suspension concentrate/ Flowable slurry production, wetting agent, dispersing agent & suspending agents, colorant/dye was added into the charged vessel followed by homogenization for a period of ranging between 45 - 60 minutes using high shear homogeniser to obtain a homogenized slurry. Technical and other remaining adjuvants excluding 'antifreeze & thickeners' were added into the homogenized slurry to obtain a uniform slurry. Half of the quantity of required antifoam agent was added into the slurry before grinding. The uniform slurry mixture was then passed through appropriate particle size reduction equipment (Dyno-Mill) until the granule material of the desired particle size was achieved. Remaining half of the quantity of required antifoam agent along with the antifreeze agent was added to the granule material as obtained. Gum solution as obtained in the first step was then added to obtain the suspo-emulsion.
Biological Examples:
Bio-efficacy studies
Bio-efficacy of the herbicidal composition of the present invention:
Field trials were conducted on various weeds and the effect of the present invention was studied to understand the selective and effective control of weeds, phytotoxicity, crop yield and residual effect on succeeding crops.
A synergistic effect exists wherever the action of a combination of active ingredient is greater than the sum of the action of each of the components alone. Therefore, a synergistically effective amount or an effective amount of a synergistic composition or combination is an amount that exhibits greater herbicidal activity than the sum of the herbicidal activities of the individual components.
In the field of agriculture, it is often understood that the term "synergy" is as defined by Colby S.R. in an article entitled "Calculation of the synergistic and antagonistic responses of herbicide combinations" published in the journal Weeds, 25 1967, 15, p.20-22, incorporated herein by

reference in its entirety. The action expected for a given combination of two active components can be calculated as follows:
Where E = Expected % control by mixture of three products A, B and C in a defined dose
E = X + Y + Z-{XY + YZ + XZ}+( X Y Z )
100 10000
Observed % control by product A Observed % control by product B Observed % control by product C
Ratio = Observed Control % Expected Control %
Ratio of O/E > 1, means synergism observed.
In the Colby method, the expected (or predicted) response of a combination of herbicides is calculated by taking the product of the observed response for each individual component of the combination when applied alone divided by 100 and subtracting this value from the sum of the observed response for each component when applied alone. An unexpected enhancement in efficacy of the combination is then determined by comparing the observed response of the combination to the expected (or predicted) response as calculated from the observed response of each individual component alone. If the observed response of the combination is greater than the expected (or predicted) response, or stated conversely, if the difference between the observed and expected response is greater than zero, then the combination is said to be synergistic or unexpectedly effective, (Colby, S. R,: 25 Weeds, 1967(15), p. 20-22}. The Colby method requires only a single dose of each herbicide applied alone and the mixture of both doses. The formula used to calculate the expected efficacy (EE) which was compared with the observed efficacy (OE) to determine the efficacy of the present invention is explained herein below.
The herbicidal action of the inventive the combination according to the invention was demonstrated by the following field experiments.
Field experiment on Bio-efficacy and phytotoxicity to Corn crop

The field experiment was conducted on Corn crop in Village Almorah, Uttar Pradesh and the
experimental details as below:

Crop & Variety: Corn- Ganga Kaveri
RBD Experimental design with 3 Replications
No.of Treatments: 37
Treatment Plot size in Corn field.: 8X5 M
Application Time: 35 DAS (Days after sowing corn crop), when weeds are 3-7 leaf stage and active growing stage.
Observations: At 10 and 20 DAA (days after application) of herbicide treatments for phytotoxicity and 15 and 30 DAA (Days after Application) for bio-efficacy against mixed weed flora
Spray Volume: 500 litre water per hectare
Application Equipment: Hand operated Knapsack sprayer fitted with Flat fan nozzle.
Experimental Methodology: Corn crop was raised as per the standard agronomic practices in the field to conduct a trial to assess phytotoxicity of different inventive synergistic mixtures as tank mixture as well ready to use ternary mixture. The trial was laid out in Randomized Block Design (RBD) with 33 treatments including untreated check (UTC), replicated three times. For each treatment plot size of 40 sq. mt was maintained. The application of different treatments with prescribed doses was done with manually operated knapsack sprayer fitted with flat fan nozzle. The spray volume was used at 375 1/h for spraying. The Untreated check plot was sprayed with water alone. Observations on phytotoxicity viz., yellowing, stunting, epinasty and hyponasty was recorded at 10 and 20 days after spraying, by adopting 0-10 rating scale as below:
0= No phytotoxicity, 1 =1-10%, 2=11-20%, 3=21-30%, 4=31-40%, 5=41-50%, 6=51-60%, 7=61-70%, 8=71-80%, 9=81-90% and 10=91-100% phytotoxicity Percent phytotoxicity was calculated by following formula:

]ioo
% Phytotoxicity= (
\.No.of

Sum of All Scores
samples X Highest rating scale)

Class wise (Broad leaved weeds, grassy and sedges) as well as Species wise weed count recorded at 15 and 30 DAA (Days After Application) by using 0.25 m2 quadrant at minimum 3 places randomly selected in each treatment plot. The average of each variable was used together with the sum of all the variables per plot to calculate the percentage of weed control.

% Weed Control^ 1 -

tan M Count in untreated M-Mn Weed Count in Med ylot'
Mean W (out to untreated plot

noo

The % weeds control data has applied to Colby's formula to determine the synergism between three
herbicides.
Efficacy was tested against following weeds:

Broad Leaved Weeds Grasses & sedges
Trianthema portulacastrum,
Chenopodium album, Amaranthus spp.,
Phyllanthus niruri Echinochloa sp., Brachiaria sp.,
Cyperus rotundus, Cyperus iria,
Digitaria spp., Eleusine spp.
61-63% of total weed flora 37-39% of weed flora
Table 1

ond active npound Dose Rate First active compound - Tembotrione Third active Compound Dose Rate
g a.i./ha Dose Rate (g a.i./ha)
g a.i./ha
osulfuron hyl 0 0 40 60 80 100 120.00 Diuron/ Ametryn 0.00

25 0 40 60 80 100 120.00
100.00
37.5 0 40 60 80 100 120.00
250.00
50 0 40 60 80 100 120.00
500.00
62.5 0 40 60 80 100 120.00
800.00
75 0 40 60 80 100 120.00
1000.00

80%WDG @ (238+66.7+312.5)
T35 Tembotrione
42%SC+
Halosulfuron
methyl 75%WG +
Ametryn
80%WDG @
(238+66.7+1000) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
T36 * (Tembotrione 20% +Halosulfuron methyl 10%+ Diuron 50%)WG @(100+50+250 a.i./ha) or 500g formulated product/ha 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
T37 Weedy Check
(unweeded
Control) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
* Ready to use formulation of present invention
The results of the field trial on crop phytotoxicity presented in Table 3 indicates that the inventive composition of present invention did not cause any significant visible damage to the corn crop in terms of loss of pigmentation, crop growth, crop vigour etc.
Study of the residual effect of herbicides and admixtures on the succeeding crop:
The impact of the above treatments on the succeeding crop of Mustard (variety: Coral PAC 432) was also studied in the following season after the harvest of Corn crop, and germination and crop growth parameters were studied and evaluated. It was found that the germination of mustard crop was unaffected in treated as compared to the control plots. The response even at the higher dose @ Tembotrione 42%SC+ Halosulfuron methyl 75%WG + Diuron 80%WP @ (190.5+100+1000) g a.i./ha was at par with the untreated plots.

100 50 250 Tembotrione
42%SC+ Halosulfuron methyl 75%WG + Ametryn 80%WDG @ (238+66.7+ 312.5) 206.01 94.68 2.18
100 50 800 Tembotrione
42%SC+ Halosulfuron methyl 75%WG + Ametryn 80%WDG @ (238+66.7+ 1000) 208.31 94.98 2.19
T32 100 50 250 * Tembotrione 20%
+Halosulfuron methyl 10%+ Diuron 50%)WG @ 500 215.10 94.76 2.27
T33 0 0 0 Weedy Check
(un-weeded
Control)
* Ready mix WG formulation
@ Tembotrione based all combination treatments are added with recommended dosages of
Safener Isoxadifen methyl
In view of the above table, it is found that the percent increase in yield over control plot was recorded highest in the Treatment 32 (Ready mix of Tembotrione 20%+Halosulfuron methyl 10%+Diuron 50% @ 100+50+250 g a.i./ha).
Field experiment on Bio-efficacy and phytotoxicity to Sugarcane crop
The field experiment was conducted on Sugarcane crop in Amroh district,Uttar Pradesh and the
experimental details as below:

Crop & Variety: Sugarcane- Co-1148Feb,2019
RBD Experimental design & Replications Three
No. of Treatments: 14 including weedy check
Treatment Plot size in Sugarcane field: 8MX5M
Application Time: 14 DAP

Observations: Weed count at 30DAT
Crop Phytotoxicity at 10 & 20 DAT
Spray Volume: 500 lt/ha
Application Equipment: Knap sack fitted with flat fan nozzle
Efficacy was tested against following weeds:

Broad Leaved Weeds Grasses & sedges
Boerhaavia diffusa, Trianthema
portulacastrum, Chenopodium album,
Amaranthus spp., Phyllanthus niruri,
Tribulus terristris, Portulaca oleracea,
Xanthium spp., Convonvulus arevensis,
Digera arvensis, Celosia argentina Echinochloa sp., Brachiaria sp.,
Cyperus rotundus, Cyperus iria,
Digitaria spp., Eleusine spp.
54-57% of total weed flora 43-46% of weed flora
Bio-efficacy- Field trials Table 6

Tembotrione @ 30 DAT Halosulfuron
methyl @ 30
DAT Diuron @ 30 DAT Tembotrione + Halosulfuron methyl + Diuron @ 30DAT
tments g a.i./ha %
Weed
Control g a.i./ha % Weed Control g a.i./ha %
Weed
Control g a.i./ha % Weed Control Colby
Expected
% Weed
Control Colby ratio
observed%/ Expected%
Ti 40 42.67 25 19.67 100 4.33 40+25+100 53.33 55.94 0.95
T2 40 38 50 39.67 250 20.33 40+50+250 70 70.20 1.00
T3 40 41.13 75 45.66 800 24 40+75+800 73.67 75.69 0.97
T4 100 63 25 17.33 100 5 100+25+100 63.87 70.94 0.90
T5 100 65.67 50 40 250 22 100+50+250 92.67 83.93 1.10
T6 exemplary composition of present invention
(@Tembotrione 20% + Halosulfuron methyl 10% +
Diuron 50%) WG @ 500g/ha 100+50+250 95.33 83.93 1.14

T7 100 65.33 75 43.87 800 24.87 100+75+800 92 85.38 1.08
T8 120 68.33 25 20 100 0 120+25+100 72.33 74.66 0.97
T9 120 67 50 38.33 250 20 120+50+250 93.67 83.72 1.12
Ho 120 66.87 75 41.66 800 23.33 120+75+800 94 85.18 1.10
rn 100 64.67 50 38.67 0 0 100+50+0 76.66 78.33 0.98
ri2 100 62.87 0 0 250 21.67 100+0+250 67.87 70.92 0.96
ri3 0 0 50 38 250 19.87 0+50+250 47.33 50.32 0.94
In view of the above table, similar trends are observed in Sugarcane crop where the weed flora make up is relatively more in terms of narrow leaved weeds as compared to broad leaved weeds in comparison to Corn crop. The composition of present invention showed synergistic effect in controlling the weeds at 30 DAT.
Table 7: Phytotoxicity on sugarcane crop

Dose Dose Formulations Yellowing (%) Stunting % Epinasty % Hyponasty %
atments g a.i./ha g/Ha 10 DAA 20 DAA 10 DAA 20 DAA 10 DAA 20 DAA 10 DAA 20 DAA
Ti 40+25+ 100 Tembotrione
42%SC+ Halosulfuron methyl 75%WG + Diuron 80%WP @ (95.23+33.3+125) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
T2 40+50+ 250 Tembotrione
42%SC+
Halosulfuron
methyl 75%WG +
Diuron 80%WP @
(95.23+66.67+312.
5) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
T3 40+75+ 800 Tembotrione 42%SC+ Halosulfuron methyl 75%WG + Diuron 80%WP @ (95.23+100+1000) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Tl3 0+50+2 50 Halosulfuron methyl 75WG +Diuron 80%WP @ 66.7+312.5 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
The results of the field trial on sugarcane phytotoxicity presented in Table 7 indicates that the inventive composition of present invention did not cause any significant visible damage to sugarcane crop in terms of loss of pigmentation, crop growth, crop vigour etc.
Study of the residual effect on the succeeding crop:
The impact of the above treatments on the succeeding crop of Potato was also studied in the following season after the harvest of Sugarcane crop, and germination and crop growth parameters were studied and evaluated. It was found that the emergence of Potato crop was unaffected in treated as compared to the control plots.
Table 8:

at- Dose Dose Formulations Emergence % 15DAS Yellowing
(%) Stunting % Epinasty % Hyponasty
%
ts g a.i./ha g/Ha
10 DAA 20 DAA 10 DAA 20 DAA 10 DAA 20 DAA 10 DAA 20 DAA
40+25+100 Tembotrione
42%SC+
Halosulfuron methyl 75%WG + Diuron 80%WP @ (95.23+33.3+125) 100 0 0 0 0 0 0 0 0
40+50+250 Tembotrione 42%SC+
Halosulfuron methyl 75%WG + Diuron 80%WP @ (95.23+66.67+312.5) 100 0 0 0 0 0.00 0.00 0 0
40+75+800 Tembotrione 42%SC+
Halosulfuron methyl 75%WG + Diuron 80%WP @ (95.23+100+1000) 100 0 0 0 0 0.00 0.00 0 0
100+25+100 Tembotrione
42%SC+
Halosulfuron methyl 75%WG + Diuron 80%WP @
(238+33.3+125) 100 0 0 0 0 0.00 0.00 0 0

embotrione ispensibility Min 60% 98.3 98.2 97.9 97.4 97.3 97.2 97.1
alosulfuron Methyl Content 4.75-5.5 5.4 5.4 5.4 5.2 5.2 5.1 5
alosulfuron
Methyl ispensibility Min 60% 99.1 99 98.7 98.5 98.4 98.3 98.1
Diuron Content 23.75-26.25 25.9 25.8 25.7 25.6 25.4 25.3 25.2
Diuron ispensibility Min. 60 97.8 97.8 95.6 95.4 95.3 95.2 94.9
pH (1% aqueous Solution) 2 to 9 6.5 6.5 6.5 6.5 6.5 6.5 6.5
Persistent Foam Max 60 Ml 30 30 30 30 30 30 30
Viscosity 200-900 Cps 426 430 440 440 440 440 440
Specific Gravity 1.05-1.25 1.15 1.15 1.15 1.15 1.15 1.15 1.15
The shelf life of commercially available formulation comprising individual/solo herbicides is 2 years. However, the composition of the present invention is found to be stable for at least 42 months.
From the foregoing it will be observed that numerous modifications and variations can be effectuated without departing from the true spirit and scope of the novel concepts of the present invention. It is to be understood that no limitations with respect to the specific embodiments illustrated is intended or should be inferred. It should be understood that all such modifications and improvements have been deleted herein for the sake of conciseness and readability but are properly within the scope of the following claims,

WE CLAIM:
[CLAIM 1]. A synergistic herbicidal composition comprising of:
a. Tembotrione or its agrochemically acceptable salts; and
b. at least one sulfonylurea herbicide selected from amidosulfuron, azimsulfuron,
bensulfuron, Halosulfuron methyl, imazosulfuron, mesosulfuron, methiopyrisulfuron,
monosulfuron, Metsulfuron, Chlorimuron-ethyl, ethoxysulfuron, flazasulfuron,
flucetosulfuron, flupyrsulfuron, foramsulfuron, Prosulfuron, Thifensulfuron-methyl,
Cyclosulfuron, Sulfometuron, Primisulfuron, nicosulfuron, orthosulfamuron,
oxasulfuron, primisulfuron, pyrazosulfuron, rimsulfuron, sulfometuron, sulfosulfuron,
trifloxysulfuron or its agrochemically acceptable salts; and
c. another herbicide selected from a phenyl urea herbicide i.e. anisuron, buturon,
chlorbromuron, chloreturon, chlorotoluron, chloroxuron, daimuron, difenoxuron,
dimefuron, Diuron, fenuron, fluometuron, fluothiuron, isoproturon, linuron, methiuron,
methyldymron, metobenzuron, Metobromuron, metoxuron,monolinuron, monuron,
parafluron, phenobenzuron, Chlorbromuron, Neburon, Siduron, tetrafluron, thidiazuron,
trimefluor or a triazine herbicide selected from Atrazine, Metribuzin, Cynazine,
Prometon, Hexazinone, Simazine, Ametryn (thiotriazine) or its agrochemically
acceptable salts, esters thereof and
d. one or more of agrochemically acceptable excipients
[CLAIM 2]. The herbicidal composition as claimed in claim 1 comprising of:
a. Tembotrione or its agrochemically acceptable salts present in the range 5% to 60% w/w;
and
b. at least one sulfonylurea herbicide selected from amidosulfuron, azimsulfuron,
bensulfuron, Halosulfuron methyl, imazosulfuron, mesosulfuron, methiopyrisulfuron,
monosulfuron, Metsulfuron, Chlorimuron-ethyl, ethoxysulfuron, flazasulfuron,
flucetosulfuron, flupyrsulfuron, foramsulfuron, Prosulfuron, Thifensulfuron-methyl,
Cyclosulfuron, Sulfometuron, Primisulfuron, nicosulfuron, orthosulfamuron,
oxasulfuron, primisulfuron, pyrazosulfuron, rimsulfuron, sulfometuron, sulfosulfuron,
trifloxysulfuron or its agrochemically acceptable salts, present in the range 5% to 70%
w/w; and

c. another herbicide selected from a phenyl urea herbicide i.e. anisuron, buturon,
chlorbromuron, chloreturon, chlorotoluron, chloroxuron, daimuron, difenoxuron,
dimefuron, Diuron, fenuron, fluometuron, fluothiuron, isoproturon, linuron, methiuron,
methyldymron, metobenzuron, Metobromuron, metoxuron,monolinuron, monuron,
parafluron, phenobenzuron, Chlorbromuron, Neburon, Siduron, tetrafluron, thidiazuron,
trimefluor or a triazine herbicide selected from Atrazine, Metribuzin, Cynazine, Prometon,
Hexazinone, Simazine, Ametryn (thiotriazine) or its agrochemically acceptable salts,
esters thereof, present in the range 10% to 75% w/w and
d. one or more of agrochemically acceptable excipients
[CLAIM 3]. A synergistic herbicidal composition comprising of:
a. Tembotrione or its agrochemically acceptable salts present in the range 5% to 60% w/w;
and
b. at least one sulfonylurea herbicide selected from amidosulfuron, azimsulfuron,
bensulfuron, Halosulfuron methyl, imazosulfuron, mesosulfuron, methiopyrisulfuron,
monosulfuron, Metsulfuron, Chlorimuron-ethyl, ethoxysulfuron, flazasulfuron,
flucetosulfuron, flupyrsulfuron, foramsulfuron, Prosulfuron, Thifensulfuron-methyl,
Cyclosulfuron, Sulfometuron, Primisulfuron, nicosulfuron, orthosulfamuron,
oxasulfuron, primisulfuron, pyrazosulfuron, rimsulfuron, sulfometuron, sulfosulfuron,
trifloxysulfuron or its agrochemically acceptable salts, present in the range 5% to 70%
w/w; and
c. another herbicide selected from a phenyl urea herbicide i.e. anisuron, buturon,
chlorbromuron, chloreturon, chlorotoluron, chloroxuron, daimuron, difenoxuron,
dimefuron, Diuron, fenuron, fluometuron, fluothiuron, isoproturon, linuron, methiuron,
methyldymron, metobenzuron, Metobromuron, metoxuron,monolinuron, monuron,
parafluron, phenobenzuron, Chlorbromuron, Neburon, Siduron, tetrafluron, thidiazuron,
trimefluor or a triazine herbicide selected from Atrazine, Metribuzin, Cynazine, Prometon,
Hexazinone, Simazine, Ametryn (thiotriazine) or its agrochemically acceptable salts,
esters thereof, present in the range 10% to 75% w/w and
d. organosilicone surfactants as spreading and sticking agents and bio based efficacy
enhancing agents.
e. One or more of agrochemically acceptable excipients

[CLAIM 4]. The herbicidal composition as claimed in claim 1, wherein sulfonylurea herbicide is Halosulfuron-m ethyl.
[CLAIM 5]. The herbicidal composition as claimed in claim 1, wherein phenyl urea herbicide is Diuron or its agrochemically acceptable salts.
[CLAIM 6]. The herbicidal composition as claimed in claim 1, triazine herbicide is Ametryn or its agrochemically acceptable salts.
[CLAIM 7]. The herbicidal composition as claimed in claim 1, wherein the agrochemically acceptable excipients are safeners, surfactant/dispersing agent, anti-freezing agent, anti-foaming agent, wetting agent, suspension aid, antimicrobial/anti-bacterial agent, thickener, quick coating agent or sticking agents/sticker, spreader, binders, adjuvants, fillers, emulsifiers, coloring pigments, dyes, preservatives and buffering agent thereof.
[CLAIM 8]. The herbicidal composition as claimed in claim 7, wherein the safener is selected from the group consisting of benoxacor, BPCMS, cloquintocet, cyometrinil, cyprosulfamide, dichlormid, dicyclonon, dietholate, fenchlorazole, fenclorim, flurazole, fluxofenim, furilazole, Isoxadifen ethyl, jiecaowan, Jiecaoxi, mefenpyr, mephenate, metcamifen, naphthalic anhydride, oxabetrinil or their salts and esters thereof and present in the range of 2.5-30% weight of the total composition.
[CLAIM 9]. The herbicidal composition as claimed in claim 7, wherein the surfactants/dispersing agent is selected form the group consisting of sodium lignosulphonates; Tristyrylphenol Ethoxylate Amine salt of phosphate tristyryl phenol ethylated /Acrylic Copolymer/ Ethoxylated Tristryl phenol Sulphate,Naphthalene sulfonic acid,sodium salt condensate with formaldehyde,Ethoxylated oleyl cetyl alcohol, Polyalkelene glycol ethersodium naphthalene sulphonate formaldehyde condensates; tristyrylphenolethoxylate phosphate esters; aliphatic alcohol ethoxylates; alky ethoxylates; EO-PO block copolymers; and graft copolymers or mixtures thereof and present in the range of 0.5-10%) weight of the total composition.
[CLAIM 10]. The herbicidal composition as claimed in claim 7, wherein emulsifiers are selected from Castor oil ethoxylates, Calcium alkyl benzene sulfonate or mixtures thereof and present in the range of 0.1-10% weight of the total composition.
[CLAIM 11]. The herbicidal composition as claimed in claim 7, wherein anti-freezing agent is selected from the group consisting of polyethylene glycols, methoxypolyethylene glycols, propylene

glycol, polypropylene glycols, polybutylene glycols, glycerine, ethylene glycol and mixtures thereof and present in the range of 0.1-20% weight of the total composition.
[CLAIM 12]. The herbicidal composition as claimed in claim 7, wherein the wetting agent is selected from the group consisting of sodium lauryl sulphate; sodium dioctylsulphosuccinate; Tristyrylphenol ethoxylate non-ionic emulsifier/ mixture of non-ionic surfactants & Alkoxylated Alcohol/Block copolymer, alkyl phenol ethoxylates; and aliphatic alcohol ethoxylates, their salts and mixtures thereof and present in the range of 0.5-10% weight of the total composition.
[CLAIM 13]. The herbicidal composition as claimed in claim 7, wherein antimicrobial/anti-bacterial agent is selected from the group consisting of propionic acid and its sodium salt; sorbic acid and its sodium or potassium salts; benzoic acid and its sodium salt; hydroxy benzoic acid sodium salt; methyl p-hydroxy benzoate; and biocide such as sodium benzoate, l,2-benzisothiazoline-3-one, 2-methyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one, potassium sorbate, parahydroxy benzoates, Benzisothiazolin-3-one / Formaldehyde or mixtures thereof and present in the range of 0.01-1%) weight of the total formulation.
[CLAFM 14]. The herbicidal composition as claimed in claim 7, wherein thickener is selected from montmorillonite, bentonite clay; magnesium aluminum silicate; attapulgite; natural extracts of seeds and seaweeds; guar gum; locust bean gum; carrageenam; xanthan gum; alginates; polysaccharides, methyl cellulose; sodium carboxymethyl cellulose (SCMC); hydroxyethyl cellulose (HEC), bentonite clay, modified starches, polyacrylates, polyvinyl alcohol and polyethylene oxide or mixtures thereof and present in the range of 0.01-3%) weight of the total composition.
[CLAFM 15]. The herbicidal composition as claimed in claim 7, wherein antifoaming agent is selected from the group consisting of silicon emulsion based anti-foam agents, Siloxane polyalkyleneoxide, trisiloxane ethoxylates and mixtures thereof and present in the range of 0.01-1% weight of the total composition.
[CLAFM 16]. The herbicidal composition as claimed in claim 7, wherein filler is selected from the group consisting of Silicon Dioxide, bentonite clay, china clay, silica, kaolin, talc, starch and diatomaceous earth and mixtures thereof and present in the range of 0.1-5% weight of the total composition.

[CLAIM 17]. The herbicidal composition as claimed in claim 7, wherein adjuvants are selected from Silicone Ethoxylated Oil, Polyvinyl Pyrrolidon, Polyvinyl Alcohol, blend of poly terpene resin or mixtures thereof and present in the range of 0.1-10% weight of the total composition.
[CLAIM 18]. The herbicidal composition as claimed in claim 3, wherein organosilicone surfactant/adjuvant is trisiloxane ethoxylate and present in the range of 0.1-10% weight of the total composition.
[CLAIM 19]. The herbicidal composition as claimed in claim 3, wherein bio based efficacy enhancing agent is blend of polyterpene resin (natural oils) and present in the range of 0.1-10% weight of the total composition.
[CLAIM 20]. The herbicidal composition as claimed in claim 1 or 3, wherein the composition is in the form of Capsule suspension (CS), Dispersible concentrate (DC), Powder for dry seed treatment (DS), Emulsifiable concentrate (EC), Emulsion, water in oil (EO), Emulsion for foliar spray (ES), Emulsion, oil in water (EW), Flowable suspension/concentrate for foliar spray (FS), Granule/ soil applied (GR), Controlled (Slow or Fast) release granules (CR), Jambo balls or bags (bags in water soluble pouch), Solution for foliar spray (LS), Micro-emulsion (ME), Oil dispersion (OD), Oil miscible flowable concentrate (oil miscible suspension (OF), Oil miscible liquid (OL), Suspension concentrate (flowable concentrate) (SC), Suspo-emulsion (SE), Water soluble granule (SG), Soluble concentrate (SL), Water soluble powder (SP), Water dispersible granule (WG or WDG), Wettable powder (WP), Water dispersible powder for slurry treatment (WS), A mixed formulation of CS and SC (ZC), mixed formulation of CS and SE (ZE), mixed formulation of CS and EW (ZW) or combination thereof.
[CLAIM 21]. The herbicidal composition as claimed in claim 1 or 3, wherein the formulation is applied to a plant/crop by spraying, rubbing, atomizing, irrigating, evaporating, dusting, fogging, broadcasting, pouring, mist blowing, soil mixing, foaming, painting, spreading-on, drenching, dipping or drip irrigation.
[CLAIM 22]. The herbicidal composition as claimed in claim 1 or 3, wherein higher dosage of the composition is applied to the soil for treatment of weeds.

[CLAIM 23]. The herbicidal composition as claimed in claim 1 or 3, exhibits herbicidal activity against broad leaved weeds, grasses and sedges.
[CLAIM 24]. The herbicidal composition as claimed in claim 1 or 3, which is safe to crop and has no adverse effect on germination or growth of succeeding crops.
[CLAIM 25]. The herbicidal composition as claimed in claim 1 or 3, which is applied as an early post emergence to late post emergence (3-12 leaf stage of weeds).
[CLAIM 26]. The herbicidal composition as claimed in claim 1 or 3, which exhibits herbicidal activity against highly resistant and hard to kill weeds including Cyperus genera weeds.
[CLAIM 27]. The herbicidal composition as claimed in claim 1 or 3, which is applied in one shot application for killing/ controlling highly resistant broad leaved weeds, grasses and sedges at lower application rates.
[CLAIM 28]. The herbicidal composition as claimed in claim 1 or 3, which provides excellent crop safety in terms of no phytotoxicity and no adverse effect on germination or growth of succeeding crops due to reduced amount of dosage.
[CLAIM 29]. A kit-of-parts comprising a plurality of components, wherein said plurality of components comprises:
a. Tembotrione or its agrochemically acceptable salts present in the range 5% to 60% w/w; and
b. at least one sulfonylurea herbicide selected from amidosulfuron, azimsulfuron, bensulfuron,
Halosulfuron, imazosulfuron, mesosulfuron, methiopyrisulfuron, monosulfuron,
Metsulfuron, Chlorimuron-ethyl, ethoxysulfuron, flazasulfuron, flucetosulfuron,
flupyrsulfuron, foramsulfuron, Prosulfuron, Thifensulfuron-methyl, Cyclosulfuron,
Sulfometuron, Primisulfuron, nicosulfuron, orthosulfamuron, oxasulfuron, primisulfuron,
pyrazosulfuron, rimsulfuron, sulfometuron, sulfosulfuron, trifloxysulfuron or its
agrochemically acceptable salts, present in the range 5% to 70% w/w; and
c. another herbicide selected from a phenyl urea herbicide i.e. anisuron, buturon, chlorbromuron,
chloreturon, chlorotoluron, chloroxuron, daimuron, difenoxuron, dimefuron, Diuron, fenuron,
fluometuron, fluothiuron, isoproturon, linuron, methiuron, methyldymron, metobenzuron,
Metobromuron, metoxuron,monolinuron, monuron, parafluron, phenobenzuron,
Chlorbromuron, Neburon, Siduron, tetrafluron, thidiazuron, trimefluor or a triazine herbicide
selected from Atrazine, Metribuzin, Cynazine, Prometon, Hexazinone, Simazine, Ametryn

(thiotriazine) or its agrochemically acceptable salts, esters thereof, present in the range 10% to 75%) w/w and d. one or more of agrochemically acceptable excipients