DESC:Synergistic Herbicidal Combination of Penoxsulam and Bispyribac Sodium
FIELD OF THE INVENTION
The present invention relates to a synergistic herbicidal composition comprising the combination of triazolo pyrimidine herbicide and pyrimidinyl benzoate herbicides in EC / WDG / SC / SL / OD / OS / Solid Granules and other formulations in different percentages. More precisely, the subject of the present invention is a synergistic herbicidal composition based on a combination of penoxsulam and bispyribac or its salts optionally with at least one agrochemical acceptable excipient(s) which will facilitate in the preparation of desired formulations. The present invention also relates to the process for the preparation of synergistic herbicidal composition thereof and use of this combination for contending weeds and protecting the crop from being affected with such weeds during its growth.
BACKGROUND OF THE INVENTION
Crop protection is the practice of protecting the crop yields from pests, weeds, plant diseases, and other organisms that damage agricultural crops, which is critical from initial stages of crop development. Preventing weed growth in the entire crop cycle, i.e., from root development to maturing crop, leads to increased crop quality and yield. The control of weeds is extremely important in achieving high crop efficiency. Unwanted vegetation causes considerable damage to vegetables, fields, cereal, fruit, and other crops that compete with crops for nutrients, water, and sunlight leading to reduction in productivity, yield, and quality of the crops. Herbicides help to minimize this damage by controlling the growth of weeds. The use of two or more appropriate active ingredient combinations in specific dose ratios leads to synergism in crop protection. In addition to this, often highly destructive weeds can be difficult to control and may develop resistance to commercial herbicides. Many products are commercially available for these purposes, but there is still a continues need to develop new herbicidal combinations which are more effective, less costly, less toxic, environmentally safer and have different sites of action.
The biggest challenge in field of crop protection is to reduce the dosage rate of active ingredients to diminish or circumvent environmental or toxicological effects without compromising on effective crop protection against weeds, in addition to long lasting and broad-spectrum of weed control. Another challenge is to reduce the excessive application of solo chemical compounds or herbicides which invariably helps in rapid selection of weeds and aid in developing natural or adapted resistance against the active compound.
Therefore, it is indeed necessary to use the herbicidal combinations in lower doses, fast acting with the different mode of action that can provide long lasting control against broad spectrum weed control and check the resistance development in weeds. The composition should have high synergistic action, no cross resistance to existing herbicides, avoid excess loading of the toxicant to the environment and negligible impact to environmental safety. A need also exists for synergistic herbicidal compositions which could be physico-compatible formulations in the form of storage stable, safely packed, ready to use formulation.
OBJECTS OF THE INVENTION
The principal object of the present invention is to provide an herbicidal mixture or combination which solves at least one of the major problems discussed above like reducing the dosage rate, broadening the spectrum of activity, or combining activity with prolonged weed control and resistance management with improved environmental safety by reducing toxicity and residue deposit in soil and in crops.
The details of one or more embodiments of this disclosure are set forth in the accompanying description below and other features, objects, and advantages will be apparent from the description and the claims.

DESCRIPTION OF THE INVENTION
The present disclosure / specification refers to a synergistic herbicidal composition and the process for the preparation for crop protection.
The term “combination” can be replaced with the words “mixture” or “composition,” or “formulation” defined or refers to as combining two or more active ingredients formulated in desired formulations.
The term “agrochemical auxiliaries” can be replaced with the words have same meaning “formulation excipients” or “inactive excipients” or “agriculturally acceptable excipients” or “agrochemical excipients” or “agrochemical acceptable excipients.”
The term “pesticide” as used in this specification refers to a substance or mixture of substances intended for preventing, destroying, repelling, or mitigating any pest or weeds which causes damage to the crop. Herbicides, insecticides, and fungicides are used as pesticides which control weeds and insect pests and disease-causing pathogens respectively that eventually leads to high yield of crops.
The term “herbicides” as used in this specification refers to a substance or mixture of substances used to kill, control or eliminate unwanted plants or vegetation, commonly known as weeds that cause economic damage to crop and ornamental plants.
The term “synergism” as used in this specification refers to the interaction between two or more active compounds or other factors to produce a combined effect greater than the sum of their separate effects. The present invention involves the mixture of two active ingredients which has increased efficacy when compared to individual use and admixture of those components.
The term “Acetolactate synthase (ALS) enzyme” also known as “acetohydroxy acid enzyme” or “acetohydroxyacid synthase enzyme” or “AHAS enzyme.”
Conventional herbicides have typical spectrums and effects, are limited to certain weeds only and their controlling activities are sometimes poor and not satisfactorily maintained for prolonged period, and those satisfactory herbicidal effects cannot be practically achieved. Even though some herbicides may bear satisfactory herbicidal effects, they require improvements in respect of environment & health safety and are also demanded to achieve a high herbicidal effect at a smaller dosage and lack of resistance management.
We found that this objective in part or as a whole can be achieved by the combination of active compounds defined at the outset. Thus, the present inventors have intensively studied to solve these problems and have found that by combining herbicidal composition having penoxsulam and bispyribac sodium in different formulation and percentages have astonishing effects of controlling weeds and by reducing amount of dosage than in a case of using an active compound alone and admixture of those compounds.
Therefore, the present invention provides a novel synergistic herbicidal composition having triazolo pyrimidine herbicide and pyrimidinyl benzoate herbicide and purpose thereof. This herbicidal composition acts by interference / inhibition of acetolactate synthase and disrupts the biosynthesis of amino acids leading death of the weeds which can generate efficient synergism as a pre-emergent or early-post or post-emergent herbicide and can enable broad spectrum satisfactory weed control and protect the crops from sedges, grasses, and broad leaf weeds for prolonged period at lower dose with no phytotoxic effect. It also prevents the weeds from rejuvenation and further regeneration.
This combination can be developed in the form of Emulsifiable Concentrates (EC), Dispersible Concentrates (DC), Oil Dispersions (OD), Suspension Concentrates (SC), Soluble Liquids (SL), Suspoemulsion (SE), Emulsion Concentrates (EW), Microemulsions, Wettable Powders (WP), Water-Dispersible Granules (WG), Soluble Powders (SP), Granules (GR), Oil Solutions (OS), Aqueous Suspensions (AS), Aqueous Solutions (AS), Microencapsulated Suspensions (ME), and Microencapsulated Emulsions (MEC), mixed formulation of Suspension Concentrate and Capsule Suspension (ZC) and other conventional formulation and with different percentages and can be used for foliar applications or soil applications. This herbicidal combination can also effectively check the weeds and resistance development of weeds in various crops.
The present invention comprises the mixture of two active ingredients which are penoxsulam and bispyribac sodium are described herein thereof.
Penoxsulam and bispyribac sodium both are systemic and selective herbicides with low dose and high efficacy. It primarily acts by inhibiting/interfering with production of a plant enzyme necessary for growth i.e., acetolactate synthase (ALS) which disrupts the biosynthesis of these amino acids leading to stunted growth and death of the weeds. Penoxsulam has a long contact period and remains in contact with plants for around 60 days. It controls annual grasses, sedges and broad leaf weeds in rice, paddy, wheat, cotton, banana, rubber, maize, citrus, sugarcane, and grapes. This combination is also practically non-toxic and does not bioaccumulate in the soil.
The first embodiment of the present invention provides a synergistic herbicidal composition comprising:
at least one triazolo pyrimidine herbicide; and
at least one pyrimidinyl benzoate herbicides.
The first aspect of the first embodiment, the triazolo pyrimidine herbicide is selected from the group comprising but not limited to cloransulam, diclosulam, florasulam, flumetsulam, metosulam, penoxsulam, and pyroxsulam.
The second aspect of the first embodiment, the pyrimidinyl benzoate herbicide is selected from the group comprising but not limited to bispyribac, pyribenzoxim, pyriflubenzoxim, pyriftalid, pyriminobac, and pyrithiobac.
The third aspect of the first embodiment, synergistic herbicidal composition comprising a combination of triazolo pyrimidine herbicide and pyrimidinyl benzoate herbicide; wherein triazolo pyrimidine herbicide and pyrimidinyl benzoate herbicide are present in the weight ratio of (1-80): (1-80).
The second embodiment of the present invention provides a synergistic herbicidal composition comprising:
at least one triazolo pyrimidine herbicide;
at least one pyrimidinyl benzoate herbicide; and
at least one agrochemical acceptable excipient.
The first aspect of the second embodiment, the triazolo pyrimidine herbicide is selected from the group comprising but not limited to cloransulam, diclosulam, florasulam, flumetsulam, metosulam, penoxsulam, and pyroxsulam; preferably penoxsulam.
The second aspect of the second embodiment, the pyrimidinyl benzoate herbicide is selected from the group comprising but not limited to bispyribac, pyribenzoxim, pyriflubenzoxim, pyriftalid, pyriminobac, and pyrithiobac; preferably bispyribac or its salts; more preferably bispyribac sodium.
The third aspect of the second embodiment, synergistic herbicidal composition comprising a combination of penoxsulam and bispyribac sodium; wherein penoxsulam and bispyribac sodium are present in the weight ratio of (1-80):(1-80); preferably in the ratio of (1-40):(1-40).
The fourth aspect of the second embodiment, agrochemical acceptable excipient selected from but not limited to the group comprising carrier, surfactant, stabilizer, anti-freezing agent, antifoaming agent, anticaking agent, dispersing agent, and adjuvant(s). These are selected according to the respective types of formulation requirements, and which will facilitate in the preparation different formulations.
Further aspect of the second embodiment, carrier can be selected from liquid medium or solid medium which will provides a stable environment to the formulation. Wherein liquid medium selected from but not limited to water and organic solvents incudes hydrocarbon solvents and cycloalkanes, ether solvents, ester solvents, ketones solvents, alcohols solvents, and polar-aprotic solvents.
Further aspect of the second embodiment, surfactant includes wetting agent, and emulsifier.
Further aspect of the present invention, emulsifier includes anionic emulsifiers, cationic emulsifiers, nonionic emulsifiers, amphoteric emulsifiers, phospholipids, glyceryl esters, and other commercially available emulsifiers.
Further aspect of the present invention, anionic emulsifiers selected from but not limited to sodium lauryl sulfate (SLS), sodium dodecyl benzenesulfonate (SDBS), alkyl sulfates, alkyl ethoxylate sulfates, and calcium alkyl benzene sulfonate.
Further aspect of the present invention, cationic emulsifiers selected from but not limited to cetyl trimethyl ammonium bromide (CTAB), and stearalkonium chloride.
Further aspect of the present invention nonionic emulsifiers selected from but not limited to polysorbate 80, polysorbate 20, sorbitan monolaurate, alkyl ethoxylates, sorbitan monooleate, and polyaryl sulfate esters.
Further aspect of the present invention, amphoteric emulsifiers selected from but not limited to cocamidopropyl betaine, lauramidopropyl betaine; ethoxylated emulsifiers: ethoxylated nonylphenol (nonylphenol ethoxylate), ethoxylated sorbitan esters, and ethoxylated fatty alcohols.
Further aspect of the second embodiment, wetting agent is selected from but not limited to alkyl aryl sulfonates, alkyl phenol ethoxylates/ propoxylates, alkoxylates, ethoxylated alkoxylates, alkyl aryl poly alkoxy ether, alkyl polyglucosides, polysorbates, polyethylene glycol esters, polysorbate, polyethylene oxide (PEO), ethoxylated or propoxylated fatty alcohols and/or acids and/or amines, ethoxylated or propoxylated synthetic alcohols, alkyl aryl sulphates, ethoxylated alkyl aryl sulphates, ethoxylated vegetable oils, ethoxylated sorbitan esters, phosphated esters, propylene glycol esters, sodium lauryl sulfate, cocoamidopropyl betaine and block copolymers selected from the but not limited to styrene-butadiene block copolymer (SBS), butyl based block copolymer, poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO), polystyrene-poly(ethylene oxide) (PS-PEO), poly(butadiene)-poly(styrene) (PB-PS), poly(methyl methacrylate)-poly(butadiene)-poly(methyl methacrylate) (PMMA-PB-PMMA), poly(capro lactone)-poly(ethylene glycol) (PCL-PEG), poly(ethylene glycol)-poly(propylene glycol)-poly(ethylene glycol) (PEG-PPG-PEG), and other commercially available wetting agents.
Further aspect of the second embodiment, stabilizer includes antioxidant, chelating agent, pH adjuster, UV absorber, stabilizing polymer, and inert material.
Further aspect of the second embodiment, stabilizers selected from group vegetable and seed oils selected from but not limited to soybean oil, sunflower seed oil, coconut oil, peanut oil, corn oil, castor oil, palm oil, rapeseed oil, safflower oil, olive oil, corn oil, cottonseed oil, linseed oil, tung oil and sesame oil, and oxidized forms of the above oils.
Further aspect of the second embodiment, inert material selected from but not limited to quartz, kaolin clay, attapulgite clay, acidic clay, attapulgite, zeolite, bentonite, montmorillonite, acid white clay, pyrophyllite, talc, diatomaceous earth and calcite, china clay, corn rachis powder, walnut husk powder, urea, calcium carbonate, ammonium sulfate, silicon oxides (precipitated silica), and other commercially available inert materials.
Further aspect of the second embodiment, anti-freezing agent selected from but not limited to ethylene glycol, propylene glycol, glycerol, calcium chloride, sodium acetate, potassium acetate, urea, and other commercially available anti-freezing agents.
Further aspect of the second embodiment, antifoaming agents selected from but not limited to silicone-based antifoams, polyethylene glycol-based antifoams, mineral oil-based antifoams, ethylene glycol-based antifoams, polysorbate-based antifoams, dimethicone-based antifoams, polypropylene glycol-based antifoams, vegetable oil-based antifoams, alkyl siloxane-based antifoams, fatty acid-based antifoams, and other commercially available antifoaming agents.
Further aspect of the second embodiment, anticaking agent selected from silica-based compounds includes silicon dioxide (silica), precipitated silica (amorphous form of silicon dioxide), calcium silicate, magnesium stearate, sodium aluminosilicate, potassium aluminium silicate, tricalcium phosphate, sodium ferrocyanide, calcium carbonate, diatomaceous earth, sodium bicarbonate, and other commercially available anticaking agents.
Further aspect of the second embodiment, dispersing agents selected from but not limited to polyethylene glycol, polysorbate, poly acrylate, poly(methyl methacrylate), polyvinyl alcohol, poly ethoxylated alcohol, poly ethoxylated fatty acids, polyacrylic acid, polyvinylpyrrolidone, alkyl sulfonates, aryl sulfonates, sodium tripolyphosphate, sodium dodecyl sulfate, sodium lignosulfonate, sodium carboxymethyl cellulose, hydroxypropyl methylcellulose, sorbitan esters (e.g., sorbitan monolaurate, sorbitan monooleate), gum arabic and carbomer and/or their comb polymers; preferably poly(methyl methacrylate), polyethylene glycol comb polymer, and other commercially available dispersing agents.
Further aspect of the second embodiment, adjuvant includes but not limited to colorant, spreader, modifier, sticker, penetrant, drift control agent, buffering agent, thickener, compatibility agent, binders, and safener.
The further aspect of the second embodiment, colorant is color dye selected from natural, synthetic, and commercially available dyes.
Further aspect of the second embodiment, binder / sticking agent selected from but not limited to methyl cellulose, ethyl cellulose, hydroxy propyl methyl cellulose, hydroxy propyl cellulose, gum, sodium carboxy methyl cellulose, polyvinyl pyrrolidone, polyethylene glycol, polyvinyl alcohol, polymethacrylates, and other commercially available binders.
Further aspect of second embodiment, thickener selected from but not limited to polysaccharides / carboxymethyl cellulose / bentonite clay, hydroxy propyl cellulose montmorillonite, bentonite, magnesium aluminium silicate, attapulgite, and other commercially available thickeners.
The further aspect of the second embodiment, modifier includes drift control modifiers, rain fastness modifiers, anti-foaming modifiers, UV stabilizers, pH modifiers, compatibility modifiers, and rheology modifiers.
Further aspect of the second embodiment, rheology modifier is bentonite and pH modifiers is triethanolamine and/or phosphoric acid.
Further aspect of the second embodiment, preservatives is antibacterial agent selected from but not limited to triclosan, triclocarban, clotrimazole, miconazole, copper-based compounds, chlorothalonil, benzisothiazolin-3-one (BIT), 5-chloro-2-methyl-4-isothiazolin-3-one, 2-methyl-4-isothiazolin-3-one (MIT), octylisothiazolinone (OIT), dodecylbenzenesulfonic acid, sodium salt (DBSA), and other commercially available preservatives.
The third embodiment of the present invention provides a synergistic herbicidal composition comprising:
penoxsulam;
bispyribac sodium;
carrier;
wetting agent and/or emulsifier;
stabilizer;
anti-freezing agent;
antifoaming agent;
dispersing agent; and
adjuvant(s).
The first aspect of the third embodiment, synergistic herbicidal composition comprising a combination of penoxsulam and bispyribac sodium; wherein penoxsulam and bispyribac sodium are present in the weight ratio of (1-80):(1-80); preferably in the ratio of (1-40):(1-40); more preferably in the ratio of (1-20):(1-20).
The second aspect of the third embodiment, agrochemical acceptable excipient selected from but not limited to carrier, wetting agent and/or emulsifier, stabilizer, anti-freezing agent, antifoaming agent, dispersing agent, and adjuvant(s). These are selected according to the respective types of formulation requirements, and which will facilitate in the preparation different formulations.
Further aspect of the third embodiment, carrier can be selected from liquid medium or solid medium which will provides a stable environment to the formulation. Wherein liquid medium selected from but not limited to water and organic solvents incudes hydrocarbon solvents and cycloalkanes, ether solvents, ester solvents, ketones solvents, alcohols solvents and polar-aprotic solvents, preferably water.
Further aspect of the present invention, emulsifier includes anionic emulsifiers, cationic emulsifiers, non-ionic emulsifiers, amphoteric emulsifiers, phospholipids, glyceryl esters, and other commercially available emulsifiers.
Further aspect of the present invention, anionic emulsifiers selected from but not limited to sodium lauryl sulfate (SLS), sodium dodecyl benzenesulfonate (SDBS), alkyl sulfates, alkyl ethoxylate sulfates, and calcium alkyl benzene sulfonate.
Further aspect of the present invention, cationic emulsifiers selected from but not limited to cetyl trimethyl ammonium bromide (CTAB), and stearalkonium chloride.
Further aspect of the present invention nonionic emulsifiers selected from but not limited to polysorbate 80, polysorbate 20, sorbitan monolaurate, alkyl ethoxylates, sorbitan monooleate, and polyaryl sulfate esters.
Further aspect of the third embodiment, wetting agent is selected from but not limited to alkyl aryl sulfonates, alkyl phenol ethoxylates, alkyl polyglucosides, polyethylene glycol esters, polysorbate, polyethylene oxide (PEO), ethoxylated fatty alcohols, ethoxylated vegetable oils, ethoxylated sorbitan esters, propylene glycol esters, sodium lauryl sulfate, cocoamidopropyl betaine and block copolymers selected from the but not limited to styrene-butadiene block copolymer (SBS), butyl based block copolymer, poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO), polystyrene-poly(ethylene oxide) (PS-PEO), poly(butadiene)-poly(styrene) (PB-PS), poly(methyl methacrylate)-poly(butadiene)-poly(methyl methacrylate) (PMMA-PB-PMMA), poly(capro lactone)-poly(ethylene glycol) (PCL-PEG), and poly(ethylene glycol)-poly(propylene glycol)-poly(ethylene glycol) (PEG-PPG-PEG); preferably butyl based block copolymer.
Further aspect of the second embodiment, stabilizer selected from group vegetable and seed oils selected from but not limited to soybean oil, sunflower seed oil, coconut oil, peanut oil, corn oil, castor oil, palm oil, rapeseed oil, safflower oil, olive oil, corn oil, cottonseed oil, linseed oil, tung oil and sesame oil, and oxidized forms of the above oils.
Further aspect of the third embodiment, anti-freezing agent selected from but not limited to ethylene glycol, propylene glycol, glycerol, calcium chloride, sodium acetate, potassium acetate and urea; preferably propylene glycol.
Further aspect of the third embodiment, antifoaming agent selected from but not limited to silicone-based antifoams, polyethylene glycol-based antifoams, mineral oil-based antifoams, ethylene glycol-based antifoams, polysorbate-based antifoams, dimethicone-based antifoams, polypropylene glycol-based antifoams, vegetable oil-based antifoams, alkyl siloxane-based antifoams and fatty acid-based antifoams; preferably alkyl siloxane-based antifoams; more preferably siloxane polyalkyleneoxide.
Further aspect of the third embodiment, dispersing agent selected from but not limited to polyethylene glycol, polysorbate, poly acrylate, poly(methyl methacrylate), polyvinyl alcohol, poly ethoxylated alcohol, poly ethoxylated fatty acids, polyacrylic acid, polyvinylpyrrolidone, alkyl sulfonates, aryl sulfonates, sodium tripolyphosphate, sodium dodecyl sulfate, sodium lignosulfonate, sodium carboxymethyl cellulose, hydroxypropyl methylcellulose, sorbitan esters (e.g., sorbitan monolaurate, sorbitan monooleate), gum arabic and carbomer and/or their comb polymers; preferably poly(methyl methacrylate) and polyethylene glycol comb polymer.
Further aspect of the third embodiment, adjuvant includes but not limited to colorant, spreader, modifier, sticker, penetrant, drift control agent, buffering agent, thickener, compatibility agent, binders, and safener.
Further aspect of the third embodiment, thickener selected from but not limited to polysaccharides / carboxymethyl cellulose / bentonite clay, hydroxy propyl cellulose montmorillonite, bentonite, magnesium aluminium silicate and attapulgite; preferably water-soluble polysaccharides.
Further aspect of the second embodiment, rheology modifier is bentonite and pH modifiers is triethanolamine and/or phosphoric acid.
Further aspect of the second embodiment, preservatives is antibacterial agent selected from but not limited to triclosan, triclocarban, clotrimazole, miconazole, copper-based compounds, chlorothalonil, benzisothiazolin-3-one (BIT), 5-chloro-2-methyl-4-isothiazolin-3-one, 2-methyl-4-isothiazolin-3-one (MIT), octylisothiazolinone (OIT), dodecylbenzenesulfonic acid, sodium salt (DBSA), and other commercially available preservatives; preferably benzisothiazolin-3-one (BIT).
The fourth embodiment of the present invention provides a synergistic herbicidal composition comprising:
penoxsulam; and
bispyribac sodium.
First aspect of the fourth embodiment, synergistic herbicidal composition comprising a combination of penoxsulam and bispyribac sodium; wherein penoxsulam and bispyribac sodium are present in the at a weight ratio of (1-80):(1-80); preferably in the ratio of (1-40):(1-40); more preferably in the ratio of (1-20):(1-20).
The second aspect of the fourth embodiment, the composition of the fourth embodiment comprising at least one agrochemical acceptable excipient thereof which is / are used in preparation desired formulation.
Further aspect of the fourth embodiment, the composition of the fourth embodiment is formulated as suspension concentrates (SC).
Further aspect of the fourth embodiment, the composition of the fourth embodiment is formulated as oil dispersion (OD).
The fifth embodiment of the present invention provides a synergistic herbicidal composition comprising:
penoxsulam;
bispyribac sodium;
water;
butyl based block copolymer;
propylene glycol;
siloxane polyalkyleneoxide;
comb polymer;
polysaccharides; and
benzisothiazolin-3-one.
The first aspect of the fifth embodiment, synergistic herbicidal composition comprising a combination of penoxsulam and bispyribac sodium; wherein penoxsulam and bispyribac sodium are present in the weight ratio of (1-80):(1-80); preferably in the ratio of (1-40):(1-40); more preferably in the ratio of (1-20):(1-20).
Further aspect of the fifth embodiment, the composition of fifth embodiment is formulated as suspension concentrates (SC).
The sixth embodiment of the present invention provides a synergistic herbicidal composition comprising:
penoxsulam;
bispyribac sodium;
calcium alkyl benzene sulfonate
polyaryl sulfate esters
vegetable Oil;
bentonite
triethanolamine.
The first aspect of the sixth embodiment, synergistic herbicidal composition comprising a combination of penoxsulam and bispyribac sodium; wherein penoxsulam and bispyribac sodium are present in the weight ratio of (1-80):(1-80); preferably in the ratio of (1-40):(1-40); more preferably in the ratio of (1-20):(1-20).
Further aspect of the sixth embodiment, the composition of sixth embodiment is formulated as oil dispersion (OD).
Another embodiment of the present invention provides a process for the preparation of an herbicidal SC formulation comprising:
add water into premix vessel,
add wetting agent, anti-freezing, dispersing agent, anti-bacterial agent, and antifoaming agent to the above vessel under continuous stirring.
add penoxsulam and bispyribac sodium to the above slurry and stirred for 30-60 minutes to get homogenous mixture.
after mixing the above material, optionally mill or grind to get the desired particle size of minimum 99% by passing through 500 bss by wet sieving method and remove any oversized particles or agglomerate.
the obtained wet milled slurry particles with size d50 <5 micron material, then transfer into the blender and add thickener 2% gum solution to get desired viscosity.
mix well until a homogenous mixture is obtained, pack the formulation and seal it.
Another embodiment of the present invention, the other alternative formulations other than described herein can be prepared using conventional processes and different methods known in the art by selecting appropriate agrochemical acceptable excipient(s) to get the suitable desired formulation of present invention combination.
Another embodiment of the present invention, the synergistic herbicidal composition of present invention used in defined dose ratios shows effective weed control in broad spectrum of weeds and increases the crop yield, quality, lesser dose rations and shows no phytotoxicity compared to single components, admixture of those two component and other available market standards. By this the herbicidal composition of present invention archives synergistic effect along with economical value product and improved environmental safety by reducing toxicity and residue deposit in soil and in crops.
Another embodiment of the present invention, a method of controlling annual grasses, sedges and broad leaf weeds comprising synergistic herbicidal composition applying to the location of weed in effective amount.
Another embodiment of the present invention, the herbicidal composition obtained from the present used to control annual and perennial broadleaf or grass weeds in paddy, wheat, pineapple, sugarcane, maize, bananas, and corn crops and may be soil or foliar applied. It is also used in multiple crops, including cereal and grains, grasses, IVM and grape orchards and thereof.
Another embodiment of the present invention, the herbicidal composition obtained from the present invention shows synergistic effects of better weed control with minimum herbicidal resistance and improved crop yield and quality.
Another embodiment of the present invention, the synergistic herbicidal composition can be applied to pre-emergence, early post-emergence, or post-emergence stages by conventional spraying methods, such as foliar application etc., over the target areas of weeds or vegetation at same time avoiding excessive drift or runoff of the composition securing thorough coverage.
The best mode of carrying present invention is described in the below given examples. These examples are merely for illustrative purposes only, not to determine the scope of the invention and in no way limit the scope or spirit of the present invention.
EXAMPLES:
EXAMPLE 1: DIFFERENT TYPE OF FORMULATION OF SYNERGISTIC HERBICIDAL COMPOSITION OF THE PRESENT INVENTION:
TABLE 1.1: SUSPENSION CONCENTRATES (SC)
S. No Ingredient Weight / Weight %
1 Penoxsulam 11
2 Bispyribac sodium 8
3 Butyl based block copolymer 2.5
4 Propylene Glycol 5
5 Siloxane polyalkyleneoxide 0.5
6 Comb polymer 2.5
7 Polysaccharides 0.3
8 Benzisothiazolin-3-one 0.1
9 Water QS
Total 100
TABLE 1.2: OIL DISPERSION (OD)
S. No Ingredient Weight / Weight %
1 Penoxsulam 11
2 Bispyribac sodium 8
3 Calcium alkyl benzen sulfonate 2
4 Polyaryl sulfate esters 8
5 Bentonite 1.5
6 Triethanolamine 2
7 Vegetable Oil QS
Total 100

EXAMPLE 2: PROCESS FOR PREPARATION OF SUSPENSION CONCENTRATES (SC) FORMULATION OF SYNERGISTIC HERBICIDAL COMPOSITION OF THE PRESENT INVENTION
Add water, wetting agent, anti-freezing, dispersing agent, anti-bacterial agent, and antifoaming agent into the pre blender in the above-mentioned ratios and mix well until a homogenous mixture is obtained. Add penoxsulam and bispyribac sodium in the above-mentioned ratios in table 1 into the above mixture and mix well. Optionally mill or grind to get the desired particle size. Then add thickener to the above obtained material mixed well until to get the homogenous mixture with desired viscosity.
EXAMPLE 3: BIO EFFICACY AND PHYTOTOXICITY TESTS OF THE PRESENT INVENTION
Methodology:
Presently to evaluate the efficacy of Penoxsulam 11% + Bispyribac Sodium 8% SC formulation against grasses, sedges, and broad-leaved weeds as post emergent herbicide in paddy and to test phytotoxicity of the molecule on the crop have been conducted. Along with Penoxsulam 11% + Bispyribac Sodium 8% SC the test molecule is tested at three dose levels viz., low, medium, and high along with the sole molecule as individual treatments and their efficiency comparison is done with the current competitive market standards i.e., Penoxsulam 1.02% + Cyhalofop butyl 5.1% OD @ 2250ml/ha, Triafamone 20% + Ethoxysulfuron 10% WG @ 225ml/ha. To justify the results the overall effect and other parameters are calculated over untreated check. The paddy crop is first divided into plots for each treatment and replicated three times following Randomized Block Design. The spraying method followed was foliar application with the help of a knapsack sprayer and the sprays are done in paddy as post emergent herbicide. The residual effect of the herbicidal mixture was evaluated on follow-up crop. Hence, Rice-Green gram cropping system was taken into consideration to evaluate.
Method of Observations:
No. of weed / 1 sq meter area: Take 4 sticks / pipes of 1 metre each and tie their ends / joints so that they make a square shape. Before taking the weed counts, the square should be placed in the treated plot randomly and the number of weed species in the 1metre area is counted.
Take the observation of individual weed species to understand or draw conclusions on the efficacy of the herbicide against individual weeds. The observations were taken at 15, 30 and 45 days after application (DAA).
Take the observation on the crop safety of the herbicide i.e., Phytotoxicity / softener observation of herbicide after application at 5 and 10 Days after spray (das).
For testing the residual effect on crop, the percent germination, Plant height at 20 das, 40 das and seed yield were recorded in green gram.
Parameters of Observations:
The weeds controlled in each treatment are calculated as percent weed controlled over untreated or controlled plot. The percent weed control is calculated by the following formula:
% weed control = (No.of weeds in control plot-No.of weeds in treated plot )/(No.of weeds in control plot)× 100
The effect of these herbicides when applied on paddy is assessed based on the yield (tons per hectare).
Colby’s Method: The combined effect of Pesticidal combinations is the sum of their individual effects. Colby’s method is an approach to evaluate the synergistic, additive, or antagonistic effects due to the interactions of two pesticides as a combination.
Colby’s method calculates expected response, and a ratio is calculated between expected response and observed response.
The formula for expected response is as follows-
E = (A+B) - ((A*B)/100)
A represents pesticide 1 and B represents pesticide 2.
The observed response is the actual percent control achieved.
Colby’s ratio = Observed response (O)/Expected response (E).
If the ratio is,
< 1 = Antagonistic effect
= Additive effect
> 1 = Synergistic effect
The effect of these herbicides in combination and alone when applied on crops were assessed based on the yield (quintal per hectare). This parameter defines the crop quality.
Results:
The different types and species of weeds found in this experiment in paddy field were enlisted below,
Grasses
Echinocloa crusgalli
Cyanodon dactylon

Broad Leaved Weeds
Ludwigia parviflora
Monochoria vaginalis
Eclipta alba
Sedges
Cyprus iria
Fimbristylis miliaceae
Table 1. Efficacy of Penoxsulam 11% + Bispyribac Sodium 8% SC formulation against grassy weeds:
Treatments Dose /
ha
(gm / L) 15 DAA 30 DAA 45 DAA Average Percent
Weed
Control Colby’s Ratio
E.c C.d E.c C.d E.c C.d E.c C.d E.c C.d E.c C.d
Penoxsulam 11% + Bispyribac Sodium 8% SC 160 15.32 10.09 0 0 3.45 2 6.26 4.03 90.52 90.91 1.10 1.21
Penoxsulam 11% + Bispyribac Sodium 8% SC 200 12.03 8.76 0 0 0 0 4.01 2.92 93.92 93.41 1.14 1.24
Penoxsulam 11% + Bispyribac Sodium 8% SC 240 7.33 5.67 0 0 0 0 2.44 1.89 96.30 95.74 1.17 1.27
Penoxsulam 2.67% OD 1000 33 35.65 29 21 25 9 29.00 21.88 56.06 50.64 0.68 0.67
Bispyribac sodium 10% SC 250 40 32.34 34 20 5 14 26.33 22.11 60.10 50.12 0.73 0.66
Penoxsulam 1.02% + Cyhalofop butyl 5.1% OD 2250 39 12 7.34 11 8 15 18.11 12.67 72.56 71.43 0.88 0.95
Triafamone 20% + Ethoxysulfuron 10% WG 225 43 9.45 9.87 13.45 6 14.78 19.62 12.56 70.27 71.67 0.85 0.95
UNTREATED CONTROL -- 55 35 64 41 79 57 66.00 44.33 0.00 0.00 0.00 0.00
DAA – Days after application
E. c – Echinochloa colonum
C.d – Cyanodon dactylon
The grassy weed population is taken post application as this is a post emergent herbicide evaluation experiment. After the application of different herbicide treatments, the herbicide combination treatments Penoxsulam 11% + Bispyribac Sodium 8% SC when applied at 240 ml/ha showed maximum reduction in weed population. At 15 Days after application (DAA) the weed population recorded was 7.33 weeds/m2 (E. colonum), 5.67 weeds/m2 (C. dactylon) followed by 0 weeds/m2 in case of both the species viz., E. colonum, C. dactylon at both 30 DAA, 45 DAA respectively. The next best treatments were Penoxsulam 11% + Bispyribac Sodium 8% SC @ 200ml/ha recorded 12.03 weeds/m2 (E. colonum), 8.76 weeds/m2 (C. dactylon) at 15daa and 0 weeds/m2 at 30 DAA, 45 DAA in both the weed species, Penoxsulam 11% + Bispyribac Sodium 8% SC @ 160ml/ha recorded 15.32 weeds/m2 (E. colonum), 10.09 weeds/m2 at 15daa, 0 weeds/m2 at 30 DAA and 3.45 weeds/m2 (E.colonum), 2 weeds/m2 (C. dactylon) at 45 DAA. The average weeds population after the entire experiment was recorded lowest in Penoxsulam 11% + Bispyribac Sodium 8% SC@ 240 ml/ha with 2.44 weeds/m2 (E. colonum), 1.89 weeds/m2 (C. dactylon) followed by Penoxsulam 11% + Bispyribac Sodium 8% SC @ 200 ml/ha with 4.01 weeds/m2 (E. colonum), 2.92 weeds/m2 (C. dactylon). The percent weed control recorded in all the treatments proved that Penoxsulam 11% + Bispyribac Sodium 8% SC when applied at 240 ml/ha were showing maximum weed control 96.30% with Colby ratio 1.17 (E. colonum), 95.74% with Colby ratio 1.27 (C. dactylon) and at Penoxsulam 11% + Bispyribac Sodium 8% SC @ 200 ml/ha showed 93.92% with Colby’s ratio 1.14 (E. colonum), 93.41% with Colby ratio 1.24 (C. dactylon) of weed control there by proving that these molecules when applied in combination at the doses of 240, 200 ml/ha showed synergistic activity and weeds control superior to market standard. Even the treatment Penoxsulam 11% + Bispyribac Sodium 8% SC when applied at 160 ml/ha (lowest dose of the herbicide combination) also showed percent weed control of 90.52% with Colby ratio 1.10 (E. colonum) and 90.91% with Colby ratio 1.21 (C. dactylon) which is also superior to the market standard. While the market standards recorded an average 72.56% weed control (E. colonum), 71.43% weed control (C. dactylon) in case of Penoxsulam 1.02% + Cyhalofop butyl 5.1% OD @2250 ml/ha followed by Triafamone 20% + Ethoxysulfuron 10% WG @ 225ml/ha recorded an average 70.27% weed control (E. colonum), 71.67% weed control (C. dactylon).

Table 2. Efficacy of Penoxsulam 11% + Bispyribac Sodium 8% SC formulation against broad leaved weeds:
Treatments Dose / ha
(gm / L) 15 DAA 30 DAA 45 DAA Average Percent Weed Control Colby’s Ratio
L.p M. v E. a L.p M. v E. a L.p M. v E. a L.p M. v E. a L.p M. v E. a L.p M. v E. a
Penoxsulam 11% + Bispyribac Sodium 8% SC 160 43 19 16 0 0 0 0 0 0 14.33 6.33 5.33 90.26 91.74 92.76 1.05 1.18 1.24
Penoxsulam 11% + Bispyribac Sodium 8% SC 200 33.43 14 11 0 0 0 0 0 0 11.14 4.67 3.67 92.43 93.91 95.02 1.07 1.20 1.28
Penoxsulam 11% + Bispyribac Sodium 8% SC 240 25.43 11 9 0 0 0 0 0 0 8.48 3.67 3.00 94.24 95.22 95.93 1.09 1.22 1.29
Penoxsulam 2.67% OD 1000 89 62 53 47 45 59 18 15 10 51.33 40.67 40.67 65.13 46.93 44.80 0.76 0.60 0.60
Bispyribac sodium 10% SC 250 99 52 48 56 39 35 19 4 19 58.00 31.67 34.00 60.60 58.68 53.85 0.70 0.75 0.72
Penoxsulam 1.02% + Cyhalofop butyl 5.1% OD 2250 123 32 22 87 22 15 20 10 25 76.67 21.33 20.67 47.92 72.16 71.95 0.56 0.92 0.97
Triafamone 20% + Ethoxysulfuron 10% WG 225 114 33 25 98 15 20 20 12 15 77.33 20.00 20.00 47.47 73.90 72.85 0.55 0.95 0.98
UNTREATED CONTROL -- 127.65 63 61 144.77 78.89 69 169.23 88 91 147.22 76.63 73.67 0.00 0.00 0.00
L. p - Ludwigia parviflora
M. v - Monochoria vaginalis
E.a – Eclipta alba
The broad-leaved weeds species identified in the paddy field were Ludwigia parviflora, Monochoria vaginalis and Eclipta alba. After the application of different herbicide treatments, the herbicide combination treatments Penoxsulam 11% + Bispyribac Sodium 8% SC when applied at 240ml/ha and 200 ml/ha showed maximum reduction in weed population. At 15 Days after application (DAA) the weed population recorded was 25.43 weeds/m2 (L. parviflora), 11 weeds/m2 (M. vaginalis) and 9 weeds/m2 (E. alba) followed by 0 weeds/m2 in case of the three species viz., Ludwigia parviflora, Monochoria vaginalis and Eclipta alba at both 30 DAA, 45 DAA respectively. The next best treatment recorded average weeds population after the entire experiment was recorded in Penoxsulam 11% + Bispyribac Sodium 8% SC @ 200 ml/ha with 33.43 weeds/m2 (L. parviflora), 14 weeds/m2 (M. vaginalis) and 11 weeds/m2 (E. alba) at 15daa, 0 at 30 daa, 45 daa in both weed species followed by Penoxsulam 11% + Bispyribac Sodium 8% SC @ 160 ml/ha with 43 weeds/m2 (L. parviflora), 19 weeds/m2 (M. vaginalis) and 16 weeds/m2 (E. alba) at 15daa, 0 weeds/ m2 at 30daa, 45daa in all three weed species. The percent weed control recorded in all the treatments proved that Penoxsulam 11% + Bispyribac Sodium 8% SC when applied at 240 ml/ha were showing maximum weed control 94.24% with Colby ratio 1.09 (L. parviflora), 95.22% with Colby ratio 1.22 (M. vaginalis), 95.93% with Colby ratio 1.29 (E. alba) and at Penoxsulam 11% + Bispyribac Sodium 8% SC @ 200 ml/ha showed 92.43% with Colby ratio 1.07 (L. parviflora), 93.91% with Colby ratio 1.20 (M. vaginalis), 95.02% with Colby ratio 1.28 (E. alba) of weed control there by proving that these molecules when applied in combination at the doses of 240, 200 ml/ha showed synergistic activity and weeds control superior to market standard. Even the treatment Penoxsulam 11% + Bispyribac Sodium 8% SC when applied at 160 ml/ha (lowest dose of the herbicide combination) also showed percent weed control of 90.26% with colbys ratio 1.05 (L. parviflora), 91.74% with Colby ratio 1.18 (M. vaginalis), 92.76% with colbys ratio 1.24 (E. alba) which is also superior to the market standard. While the remaining treatments recorded average weed population ranging between 47.47 to 65.13 weeds/m2 (F. parviflora), 46.93 to 73.90 weeds/m2 (M. vaginalis) and 44.80 to 72.85 weeds/m2 (E. alba).

Table 3. Efficacy of Penoxsulam 11% + Bispyribac Sodium 8% SC formulation against Sedges:
Treatments Dose /
ha
(gm / L) 15 DAA 30 DAA 45 DAA Average Percent
Weed
Control Colby’s Ratio
C.i F.m C.i F.m C.i F.m C.i F.m C.i F.m C.i F.m
Penoxsulam 11% + Bispyribac Sodium 8% SC 160 34 20 0 0 3 2 12.33 7.33 85.82 87.13 1.42 1.16
Penoxsulam 11% + Bispyribac Sodium 8% SC 200 25 17 0 0 0 0 8.33 5.67 90.42 90.06 1.49 1.19
Penoxsulam 11% + Bispyribac Sodium 8% SC 240 15 12 0 0 0 0 5.00 4.00 94.25 92.98 1.56 1.23
Penoxsulam 2.67% OD 1000 45 20 52 39 62 48 53.00 35.67 39.08 37.43 0.65 0.50
Bispyribac sodium 10% SC 250 48 19 55 30 66 41 56.33 30.00 35.25 47.37 0.58 0.63
Penoxsulam 1.02% + Cyhalofop butyl 5.1% OD 2250 53 21 34 17 28 15 38.33 17.67 55.94 69.01 0.92 0.92
Triafamone 20% + Ethoxysulfuron 10% WG 225 55 20 29 24 33 27 39.00 23.67 55.17 58.48 0.91 0.78
UNTREATED CONTROL -- 60 45 88 52 113 74 87.00 57.00 0.00 0.00
C.i – Cyperus iria
F.m – Fimbristylis miliaceae
The sedges found in the paddy in this experiment belong to two species i.e., Cyperus iria, Fimbristylis miliaceae. After the application of different herbicide treatments, the herbicide combination treatments Penoxsulam 11% + Bispyribac Sodium 8% SC when applied at 240 ml/ha and 200 ml/ha showed maximum reduction in weed population. At 15 days after application (DAA) the treatment Penoxsulam 11% + Bispyribac Sodium 8% SC when applied at 240 ml/ha recorded 15 weeds/m2 (C. iria), 12 weeds/m2 (F. miliaceae) and there after 0 weeds/m2 were recorded at 30, 45 DAA respectively. When Penoxsulam 11% + Bispyribac Sodium 8% SC applied at 200ml/ha recorded 25 weeds/m2 (C.iria), 17 weeds/m2 (F. miliaceae) at 15 DAA, followed which 0 weeds/m2 at 30 DAA, 8.33 weeds/m2 at 45 DAA were recorded. The average weeds population after the entire spraying was recorded the lowest in Penoxsulam 11% + Bispyribac Sodium 8% SC @ 240 ml/ha with 5 weeds/m2 (C. iria), 4 weeds/m2 (F. miliaceae) and followed by Penoxsulam 11% + Bispyribac Sodium 8% SC @ 200 ml/ha with 8.33 weeds/m2 (C. iria), 5.67 weeds/m2 (F. miliaceae) which were performing superior to market standards. The percent weed control recorded in all the treatments proved that Penoxsulam 11% + Bispyribac Sodium 8% SC when applied at 240 ml/ha showed maximum weed control 94.25% with colbys ratio 1.56 (C. iria), 92.98% with colbys ratio 1.23 (F. miliaceae) and at 200 ml/ha recorded 90.42% with colbys ratio 1.49 (C. iria), 90.06% with Colby ratio 1.19 (F. miliaceae) of weed control. The weeds in remaining treatments recorded low percent weed control ranging between 35.25% to 55.94% (C. iria), 37.43% to 69.01% (F. miliaceae) there by proving that these molecules are superior to market standard.
Table 4. Phytotoxicity of Penoxsulam 11% + Bispyribac Sodium 8% SC formulation on paddy:
Treatments Days Visual Rating Scale
Yellowing Necrosis Wilting Vein
Clearing Leaf Tip / Margin Dying Stunting / Dwarfing
Penoxsulam 11% + Bispyribac Sodium 8% SC @ 240 ml/ha 5 0 0 0 0 0 0
10 0 0 0 0 0 0
Penoxsulam 11% + Bispyribac Sodium 8% SC @200 ml/ha 5 0 0 0 0 0 0
10 0 0 0 0 0 0
Penoxsulam 11% + Bispyribac Sodium 8% SC @160 ml/ha 5 0 0 0 0 0 0
10 0 0 0 0 0 0
Penoxsulam 2.67% OD @1000 ml/ha 5 0 0 0 0 0 0
10 0 0 0 0 0 0
Bispyribac sodium 10% SC @250 ml/ha 5 0 0 0 0 0 0
10 0 0 0 0 0 0
Penoxsulam 1.02% + Cyhalofop butyl 5.1% OD @2250 ml/ha 5 0 0 0 0 0 0
10 0 0 0 0 0 0
Triafamone 20% + Ethoxysulfuron 10% WG @ 225ml/ha 5 0 0 0 0 0 0
10 0 0 0 0 0 0
Untreated Control 5 0 0 0 0 0 0
10 0 0 0 0 0 0
The phytotoxicity effect of the herbicide combination i.e., Penoxsulam 11% + Bispyribac Sodium 8% SC on paddy was tested after 5 and 10 Days after spraying. The crop was checked for symptoms like yellowing, necrosis, wilting, vein clearing, leaf tip or leaf margin dying and stunting or dwarfing of plants. After thorough observations, it could be concluded that the crop did not show any symptoms of phytotoxicity. Therefore, the present herbicide combination can be considered a safe molecule.
Table 5. Effect of Penoxsulam 11% + Bispyribac Sodium 8% SC formulation on paddy yield:
Treatments Dose / Ha
(gms / ml) Yield
(T/Ha)

Penoxsulam 11% + Bispyribac Sodium 8% SC 160 49.67
Penoxsulam 11% + Bispyribac Sodium 8% SC 200 51.55
Penoxsulam 11% + Bispyribac Sodium 8% SC 240 55.23
Penoxsulam 2.67% OD 1000 35.67
Bispyribac sodium 10% SC 250 37.89
Penoxsulam 1.02% + Cyhalofop butyl 5.1% OD 2250 44.23
Triafamone 20% + Ethoxysulfuron 10% WG 225 47.25
UNTREATED CONTROL -- 33
The yield among different herbicide treatments showed that Penoxsulam 11% + Bispyribac Sodium 8% SC when applied at 240ml/ha, 200ml/ha and 160ml/ha recorded the highest yield of 55.23 t/ha, 51.55 t/ha and 49.67 t/ha which shows that the herbicidal combination when applied at three different doses viz., high, medium, and low have similar positive effect on the yield of paddy. While the same herbicides in remaining treatments recorded moderate yield i.e., 35.67 t/ha to 47.25 t/ha. It is evident based on the results the herbicide combination has a synergistic effect when applied together especially improved the crop quality in the current case.

Table 6. Effect of Penoxsulam 11% + Bispyribac Sodium 8% SC formulation on follow-up crop – Green gram:
Treatments Dose / ha (gm/ml) % germination Plant height Yield (t/ha)
20 das 40 das
Penoxsulam 11% + Bispyribac Sodium 8% SC 160 98.02 25.87 47 17.89
Penoxsulam 11% + Bispyribac Sodium 8% SC 200 97.54 26.03 48 19.76
Penoxsulam 11% + Bispyribac Sodium 8% SC 240 98.99 26.77 48.21 20.45
Penoxsulam 2.67% OD 1000 95.67 23.45 45.24 15.43
Bispyribac sodium 10% SC 250 94.33 23 45 14.23
Penoxsulam 1.02% + Cyhalofop butyl 5.1% OD 2250 96.76 24.44 46.78 16
Triafamone 20% + Ethoxysulfuron 10% WG 225 96 24 46.66 16.78
UNTREATED CONTROL -- 92 21 41 11
The residual effect of Penoxsulam 11% + Bispyribac Sodium 8% SC and remaining treatments on follow-up crop i.e., Green gram were recorded and the results showed that Penoxsulam 11% + Bispyribac Sodium 8% SC when applied at 240ml/ha recorded 98.99% germination percent, 26.77 cm plant height at 20 das, 48.21cm plant height at 40 das and 20.45t/ha yield. The next best treatment Penoxsulam 11% + Bispyribac Sodium 8% SC when applied at 200ml/ha recorded 97.54% germination percent, 26.03 cm plant height at 20 das, 48 cm plant height at 40 das and 19.76t/ha yield and Penoxsulam 11% + Bispyribac Sodium 8% SC when applied at 160ml/ha recorded 98.02% germination percent, 25.87 cm plant height at 20 das, 47cm plant height at 40 das and 17.89 t/ha yield. In remaining treatments recorded 94.33% to 96.76% germination percent, yield varied between 16.78 t/ha to 14.23 t/ha.
It is to be understood that this disclosure is not limited to a particular compositions or specific constituents, which can, of course, vary and that the terminology used herein is for the purpose of describing embodiments only and is not intended to be limiting the scope of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise, and equivalents thereof known to those skilled in the art and so forth.
Un-less defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. Although any methods and materials similar or equivalent to those described herein can be used in the practice for testing of the disclosure(s), specific examples of appropriate materials and methods are described herein. The examples set forth above are provided to give those of ordinarily skilled in the art a complete description of how to make and use the embodiments of the compositions or specific constituents, methods of practice, and are not intended to limit the scope of what the inventors regard as their invention. Modifications of the above-described modes for carrying out the invention that is obvious to persons skilled in the art are intended to be within the scope of the following claims. All patents and publications mentioned in the specification are indicative of the levels of skill of those skilled in the art to which the disclosure pertains.
While specific embodiments of the present invention are explicitly disclosed herein, the above specification and examples herein are illustrative and not restrictive. It will be understood that various modifications may be made without departing from the spirit and scope of the invention. Many variations of the disclosure will become apparent to those skilled in the art upon review of this specification and the embodiments below. The full scope of the invention should be determined by reference to the embodiments, along with their full scope of equivalents and the specification, along with such variations. Accordingly, other embodiments are within the scope of the following claims. ,CLAIMS:CLAIMS:
We Claim:
1. A synergistic herbicidal composition comprising:
(a) at least one triazolo pyrimidine herbicides;
(b) at least one pyrimidinyl benzoate herbicides; and
(c) at least one agrochemical acceptable excipient.
2. The composition as claimed in claim 1, the triazolo pyrimidine herbicides is selected from the group comprising but not limited to cloransulam, diclosulam, florasulam, flumetsulam, metosulam, penoxsulam, and pyroxsulam.
3. The composition as claimed in claim 1, the pyrimidinyl benzoate herbicides is selected from the group comprising but not limited to bispyribac, pyribenzoxim, pyriflubenzoxim, pyriftalid, pyriminobac, and pyrithiobac.
4. The composition as claimed in preceding claims, wherein herbicidal composition comprising penoxsulam and bispyribac sodium are present in the weight ratio of (1-20):(1-20).
5. The composition as claimed in claim 1, wherein the herbicidal composition is formulated as suspension concentrates (SC).
6. The composition as claimed in claim 1, wherein the herbicidal composition is formulated as oil dispersion (OD).
7. The composition as claimed in preceding claims, wherein the herbicidal composition is used for to control annual grasses, sedges, and broadleaf weeds and in rice, wheat, fruits, roots, tubers, vegetables, maize, grains, sugarcane, cereals, field crops and various other crops for general weed control.
8. The composition as claimed in preceding claims, wherein the herbicidal composition is applied to pre-emergence, early-post, and post-emergence stages of crops by conventional methods over the target areas.