DESC:FIELD OF THE INVENTION

The present invention relates to synergistic herbicidal composition comprising A) Triafamone B) at least one herbicide selected from Bispyribac sodium, Fenoxaprop-P-Ethyl and Cyhalofop butyl C) at least one more herbicide selected from Pyrazosulfuron Ethyl, Ethoxysulfuron, Imazosulfuron, Propyrisulfuron, Penoxsulam, Pyribanzoxim, 2,4-D, Tefuryltrione and Propanil and salts thereof with one or more inactive excipients. The present invention also relates to process for preparing the said composition and its use as herbicide.

BACKGROUND OF THE INVENTION

Triafamone is a new sulfonanilide herbicide discovered and developed by Bayer Crop Science AG under the code number AE 1887196. Its mode of action is inhibition of the enzyme acetolactate synthase (ALS). Field trials since 2007 have shown that triafamone can be effectively used in direct seeded or transplanted rice from seeding or transplanting to late post-emergence at rates of 20 to 50 g a.i./ha using spray or granular formulations. Target weeds are important grasses such as Echinochloa crus-galli, Echinochloa colonum, Echinochloa oryzicola, Paspalum distichum, Isachne globosa, and sedges (including ALS resistant strains). Chemically known as 2'-[(4,6-dimethoxy -1,3,5-triazin-2-yl) carbonyl] -1,1,6'-trifluoro-N-methyl methane sulfonanilide and chemical structure of Triafamone is as provided below;

Bispyribac-sodium is a new post-emergence pyrimidinyl carboxy herbicide for the control of a wide range of weeds, in particular on Echinochloa crus-galli; the application done from the fourth unfolded leaf up to the tillering stage presents a good plant compatibility in direct-seed rice. Bispyribac-sodium mode of action consists in the inhibition of the branched amino acid biosynthesis. This compound presents a good eco-toxicology profile; it is suitable for application on paddy rice.

Fenoxaprop-p-ethyl as active ingredient which is a selective herbicide having action against Echinochloa sp. and other grassy weeds in soybean, rice, cotton, black gram and onion. It is a post-emergent herbicide having action on broad spectrum of grasses.

Cyhalofop-butyl belongs to the aryloxyphenoxy propionate group of compounds. It is very safe to rice crop owing to selectivity offered by differential metabolism of the cyhalofop-butyl by rice and target weeds. It is systemic post-emergence herbicide for the control of grassy weeds in direct seeded rice and can be used with fields that are partially flooded or drained provided weeds are exposed to spray; thus provides flexibility for various water management practices. It has wide window of application, low potential for drift issues to neighboring broadleaf crops.

Pyrazosulfuron-ethyl is a new sulfonylurea herbicide for rice, being developed and launched in major rice producing countries. Pyrazosulfuron-ethyl a sulfonylurea class of herbicide. It is a pre-emergent systemic herbicide. The herbicidal activity is derived by inhibition of Acetolactate synthase (ALS) which is essential for synthesis of amino acids.

Ethoxysulfuron as active ingredient which belongs to sulfonyl urea group of herbicides. When combined with grass herbicide like Ricestar as tankmix it can offer total weed control in rice. It is is a post-emergent broad spectrum herbicide very effective for the control of sedges and broad leaf weeds in transplanted rice. Ethoxysulfuron is mainly taken up by the leaves and is translocated within the plant. After inhibition of plant growth, chlorotic patches develop and spread at first acropetally, then basipetally. The action of the product reaches its conclusion about 3-4 weeks after application with the death of the whole plant. Ethoxysulfuron acts by inhibition of the acetolactate.

Imazosulfuron is a new post-emergence sulfonylurea herbicide. It is highly active at low application rates to control annual and perennial broad-leaf weeds and sedges in rice. There is increasing concerned about the persistence of pesticide residues in soils, crop produce and subsequent contamination of groundwater.

Propyrisulfuron, 1-(2-chloro-6-propylimidazo [1, 2-b] pyridazin-3-ylsulfonyl)-3-(4, 6-dimethoxypyrimidin-2-yl) urea is a new herbicide for use in paddy rice, which has been developed by Sumitomo Chemical Co., Ltd. Results of pot tests in greenhouse studies indicated that propyrisulfuron at 25-100 g a.i./ha afforded excellent control of annual and perennial paddy weeds, including Echinochloa spp., sedges and broadleaf weeds. Application of propyrisulfuron at 27-55 g a.i./ha by spraying, followed by flooding, reduced the shoot biomass of Echinochloa oryzicola at 3-5-leaf stage to under 10% of the untreated control. Propyrisulfuron was absorbed by both shoots and roots of Echinochloa oryzicola, however, the contribution of the herbicidal activity of root absorbed Propyrisulfuron was estimated be more important than shoot absorbed herbicide. Rice showed good tolerance to propyrisulfuron at 200 g a.i./ha.

Penoxsulam is an acetolactate synthase inhibitor herbicide developed in the mid-2000s. This substance is designed to control existing broadleaf weeds and similar plants in lawns, rice fields and cereal crops. While penoxsulam is not effective against most grass species, it can be used to control a few specific weed grass species.

2,4-Dichlorophenoxyacetic acid (usually called 2,4-D) is an organic compound with the chemical formula C8H6Cl2O3. It is a systemic herbicidewhich selectively kills most broadleaf weeds by causing uncontrolled growth in them, but leaves most grasses such as cereals, lawn turf, and grassland relatively unaffected. 2,4-D is the most common of the phenoxy herbicides and is one of the best-studied agricultural chemicals. It is primarily used as a herbicide in agriculture, forestry, and lawn care practices, and is effective against a wide variety of broadleaf plants. Occupational exposure to 2,4-D is mainly through dermal contact but can also occur, to a lesser extent, via ingestion and inhalation.

The effectiveness of herbicides depends, Inter alia, on the type of herbicide used, the application rate thereof, the composition, the harmful plants to be combated each time, the climatic and soil conditions, and the like. A further criterion is the duration of the action or the rate of degradation of the herbicide. Changes in the sensitivity of harmful plants to an active substance which may occur with relatively long use or in geographically restricted areas are also to be taken into account, if appropriate. Such changes are expressed as a more or less serious loss in activity and can only to a limited extent be compensated for by higher herbicide application rates.

Because of the multitude of possible influencing factors, there is virtually no individual active substance which combines in itself the properties desired for different requirements, in particular with regard to the harmful plant species and the climatic zones. In addition, there is the constant problem of achieving the effect with an ever lower herbicide application rate. A lower application rate reduces not only the amount of an active substance required for the application but generally also reduces the amounts of formulation auxiliaries necessary. Both reduce the economic cost and improve the ecological compatibility of the herbicide treatment.

One method frequently used for improving the application profile of a herbicide consists in combining the active substance of one or more other active substances which contribute the additional properties desired. However, the combined use of several active substances not infrequently results in phenomena of physical and biological incompatibility, e.g. lack of stability of a combined formulation, decomposition of an active substance or antagonism of the active substances. On the other hand, what is desired are combinations of active substances with a favorable activity profile, high stability and the greatest possible synergistically strengthened activity which makes possible a reduction in the application rate in comparison with individual application of the active substances to be combined.

CN104521982A describes a weed control composition containing triafamone and metamifop. The weight part ratio of the triafamone to the metamifop is (10 to 1)-(1 to 10), and the sum of the weight of the triafamone and the metamifop accounts for 1-80 percent of the weight of the composition. According to the weed control composition disclosed by the invention, the effect of controlling annual weeds in paddy fields is obviously improved compared with that of a single agent, the usage amount of pesticides is reduced, the adverse effect of the pesticides on the ecological environment is reduced, and the weed control composition has significance on comprehensive treatment of weed resistance and has huge economic benefits and social benefits.

CN104488884A discloses a farm chemical composition containing bispyribac-sodium and triafamone. The farm chemical composition comprises common assistants, bispyribac-sodium and triafamone. A mass part ratio of bispyribac-sodium to triafamone is 10: 1 to 1: 10. The total mass of bispyribac-sodium and triafamone is 1-80% that of the farm chemical composition. The farm chemical composition is suitable for preventing and removing annual weed in the paddy field. The bispyribac-sodium and triafamone compound produces obvious synergism. A use amount of active ingredients in the bispyribac-sodium and triafamone compound is obviously less than that of a single-ingredient agent.

CN104430450A discloses a herbicidal composition, comprising the components of commonly used additives, triafamone and pyrazosulfuron, wherein the ratio of the triafamone to the pyrazosulfuron in parts by weight is (10:1) to (1:10); and the total weight percentage of the triafamone and the pyrazosulfuron in the composition is 1%-80%. The herbicidal composition disclosed by the invention has an obvious synergistic effect on annual weeds in a paddy field; the dosage of pesticides is lowered; the application cost is reduced; the service life of the pesticides is prolonged; and the adverse effects on the ecological environment caused by the pesticides are reduced.

CN106172459A discloses a weed removal composition containing flucetosulfuron and triafamone. The weed removal composition contains effective components of the flucetosulfuron and the triafamone, wherein the ratio of parts by weight of the flucetosulfuron to the parts by weight of the triafamone is (10 to 1) to (1 to 10), and the weight percentage of the total weight of the flucetosulfuron and the triafamone is 5-80% of that of the composition.

CN102461554A elates to a mixed weeding composite containing bispyribac and pyrazosulfuron. The weeding composite takes the bispyribac and the pyrazosulfuron as main active ingredients, and the mass ratio of the bispyribac and the pyrazosulfuron is 1-99/1-99. The composite and agricultural agent-allowed auxiliary agents are processed into missible oils, suspending agents, water dispersible granules, wettable powder and various dosage forms. The weeding composite can prevent and weed ephemeral weeds of grass families, broad leaves and sedge families in paddy field, compared with a single herbicide, under the premise of improving the efficacy, the mixed weeding composite has the weakened herbicide resistance, wide weeding scope and long duration, is safe to paddy and succeeding crops, and is an ideal weeding composite for the paddy field.

CN102302030A discloses a synergistic weeding composition. The weeding composition is a mixture consisting of a compound (A) bispyribac-sodium and a compound (B) ethoxysulfuron. The weeding composition can be processed into a suspending agent, wettable powder, and water-dispersible granules. The weight ratio of the compound (A) bispyribac-sodium to the compound (B) ethoxysulfuron is (1-50):1. The weeding composition provided by the invention has good weeding effect, wide weeding range, and can effectively prevent and control the crab grass, cockspur grass, paspalum distichum, rotala indica and other Gramineous weeds, broadleaf weeds as well as cyperaceae weeds in the rice field in the whole growing period by being applied once. The prevention effect of the weeding composition is obviously better than the prevention effect of the weeding composition prepared from the single compound (A) or the single compound (B), and dosage of each active substance is greatly reduced. The weeding composition not only has the significance of ecology, but also has the important significance in environmental protection.

Indian patent application 201747024967 discloses a liquid herbicidal composition comprising a non-aqueous solvent system at least one sulfonylurea herbicide and at least one inorganic salt selected from the metal carbonates and metal phosphates. The invention also relates to the use of an inorganic salt selected from the metal carbonates and metal phosphates to improve chemical stabilization of a sulfonylurea herbicide in a liquid composition comprising a non-aqueous solvent system.

However still there is a need for a synergistic herbicidal composition which overcomes some of the existing problems and can be prepared easily without much complex manufacturing process.

Inventors of the present invention have surprisingly found that the synergistic herbicidal composition comprising A) Triafamone B) at least one herbicide selected from Bispyribac sodium, Fenoxaprop-P-Ethyl and Cyhalofop butyl C) at least one more herbicide selected from Pyrazosulfuron Ethyl, Ethoxysulfuron, Imazosulfuron, Propyrisulfuron, Penoxsulam, Pyribanzoxim, 2,4-D, Tefuryltrione and Propanil and salts thereof with one or more inactive excipients described herein in can provide solution to the above mentioned problems.

SUMMARY OF THE INVENTION

It is an aspect of the present invention is to provide, with a view to effective resistance management and effective control of weeds especially grassy weeds, at application rates which are as low as possible, compositions which, at a reduced total amount of active compounds applied, have improved activity against the harmful weeds and a broadened activity spectrum, in particular for certain indications.

We have accordingly found that this object is achieved by synergistic herbicidal composition comprising A) Triafamone B) at least one herbicide selected from Bispyribac sodium, Fenoxaprop-P-Ethyl and Cyhalofop butyl C) at least one more herbicide selected from Pyrazosulfuron Ethyl, Ethoxysulfuron, Imazosulfuron, Propyrisulfuron, Penoxsulam, Pyribanzoxim, 2,4-D, Tefuryltrione and Propanil and salts thereof with one or more inactive excipients.

Accordingly, in a main aspect of the present invention provides a synergistic herbicidal composition comprising A) Triafamone B) at least one herbicide selected from Bispyribac sodium, Fenoxaprop-P-Ethyl and Cyhalofop butyl C) at least one more herbicide selected from Pyrazosulfuron Ethyl, Ethoxysulfuron, Imazosulfuron, Propyrisulfuron, Penoxsulam, Pyribanzoxim, 2,4-D, Tefuryltrione and Propanil and salts thereof with one or more inactive excipients.

DETAILED DESCRIPTION OF THE INVENTION

The present invention provides solution to all the problems mentioned above by providing the synergistic herbicidal composition.

The present invention provides a synergistic herbicidal composition comprising A) Triafamone B) at least one herbicide selected from Bispyribac sodium, Fenoxaprop-P-Ethyl and Cyhalofop butyl C) at least one more herbicide selected from Pyrazosulfuron Ethyl, Ethoxysulfuron, Imazosulfuron, Propyrisulfuron, Penoxsulam, Pyribanzoxim, 2,4-D, Tefuryltrione and Propanil and salts thereof with one or more inactive excipients.

"Effective amounts” as mentioned herein means that amount which, when applied treatment of crops, is sufficient to effect such treatment.

The term “formulation” and “composition” as used herein conveys the same meaning and can be used interchangeably.

As used herein, the term "synergistic" means a combination of components wherein the activity of the combination is greater than the sum of the individual activities of each component of the combination.

The formulation or composition of the present invention can be in various physical forms, for example in the form of a dustable powder (DP), a gel, a wettable powder (WP), a granule (GR) (such as an emulsifiable granule (EG) or more particularly a water-dispersible granule (WG)), a water-dispersible tablet (WT), an emulsifiable concentrate (EC), a micro- emulsifiable concentrate, an oil-in-water emulsion (EW), an oil flowable (a spreading oil (SO)), an aqueous dispersion (aqueous suspension concentrate (SC)), an oily dispersion (OD), a suspo-emulsion (SE), a capsule suspension (CS), a soluble liquid, a water-soluble concentrate (with water or a water-miscible organic solvent as carrier), ZC (Mixed formulation of CS and SC), ZE (Mixed formulation of CS and SE), ZW (Mixed formulation of CS and EW).

In a preferred embodiment, the composition of present invention is selected from Suspension Concentrate (SC), Suspo emulsion (SE), Capsule Suspension (CS), Oil Dispersion (OD), mixed formulation of CS and SC (ZC), a mixed formulation of CS and SE (ZE), a mixed formulation of CS and EW (ZW), Granules (Soil Applied Granules), Controlled Release Granules (CR Granules), Slow release and Fast release microsphere Granules (MS Granules), Water Soluble Granules (SG), Water dispersible granule (WDG or WG), Jumbo ball formulation, Water soluble bag formulation, Wettable Powder (WP), Soluble Powder (SP).

As per one embodiment, the synergistic herbicidal composition comprising A) Triafamone B) at least one herbicide selected from Bispyribac sodium, Fenoxaprop-P-Ethyl and Cyhalofop butyl C) at least one more herbicide selected from Pyrazosulfuron Ethyl, Ethoxysulfuron, Imazosulfuron, Propyrisulfuron, Penoxsulam, Pyribanzoxim, 2,4-D, Tefuryltrione and Propanil and salts thereof with one or more inactive excipients, wherein active ingredients are present in concentration as described below;

Compound A Compound B Compound C
Active Ingredient Triafamone Bispyribac sodium Fenoxaprop-P-Ethyl Cyhalofop butyl Pyrazosulfuron Ethyl
Ethoxysulfuron
Imazosulfuron
Propyrisulfuron
Penoxsulam
Pyribanzoxim
2,4-D (differentSalt) Tefuryltrione
Propanil
Concentration 0.1-25% 0.1-25% 0.1-50%

In another embodiment of the present invention the synergistic herbicidal composition comprising A) Triafamone B) at least one herbicide selected from Bispyribac sodium, Fenoxaprop-P-Ethyl and Cyhalofop butyl C) at least one more herbicide selected from Pyrazosulfuron Ethyl, Ethoxysulfuron, Imazosulfuron, Propyrisulfuron, Penoxsulam, Pyribanzoxim, 2,4-D, Tefuryltrione and Propanil and salts thereof with one or more inactive excipients effective for controlling or killing of resistant and tough to control weeds.

As per one embodiment, the active herbicidal compound as mentioned above to be used in the composition of present invention can be in the form of base or any salts form known in the art.

In one embodiment of the present invention, the synergistic herbicidal composition of present invention is effective in crops selected from GMO (Genetically Modified Organism) and Non GMO varieties of Paddy (Oryza sativa L.) including Indica, Japonica and Javanica race. GMO Paddy. It can be applied in nursery as well as main field after sowing or transplanting. Sugarcane (Saccharum officinarum), Cotton (Gossypium spp.), Jute (Corchorus oliotorus), Wheat (Triticum aestavum), Barley (Hordeum vulgare), Maize (Zea mays), Sorghum (Sorghum bicolor), Ragi (Eleusine coracana), Pearl millet (Pennisetum glaucum), Brinjal (Solanum melongena), Onion (Allium cepa L.), Tomato (Solanum lycopersicun) , Potato (Solanum tuberosum) , Sweet potato (Ipomoea batatas), Chilly (Capsicum annum), Garlic (Allium sativum).

In one embodiment of the present invention, the synergistic herbicidal composition of present invention is effective against Aeschynomene aspera, Aeschynomene indica, Ageratum conyzoides, Alternanthera sessilis, Alternanthera philoxeroides, Amaranthus spinosus, Amaranthus viridis, Ammania baccifera, Cynodon dactylon, Dactyloctenium aegyptium, Digitaria ciliaris, Digitaria setigera, Ischaemum rugosum, Echinochloa colona, Echinochloa crus-galli, Echinochloa glabrescens, Echinochloa crus-pavonis, Echinochloa esculenta, Echinochloa frumentacea, Echinochloa muricata, Echinochloa oryzoides, Echinochloa paludigena, Eleocharis kuruguwai, Laptochloa chinensis, Eleusine indica, Eclipta alba, Eclipta prostate, Imperata cylindrical, Leersia hexandra, Leptochloa chinensis, Oryza sativa, Panicum repens, Paspalum distichum, Paspalum scrobiculatum, Rottboellia cochinchinensis, Setaria glauca, Bolboschoenus maritimus, Bergia capensis, Commelina benghalensis, Commelina diffusa, Cyanotis axillaris, Eclipta alba, Eclipta prostrate, Eichhornia crassipes, Ipomoea aquatic, Ludwigia adscendens, Ludwigia hyssopifolia, Ludwigia octovalvis, Ludwigia parviflora, Marsilea minuta, Marsilea quadrifoliata, Mimosa diplotricha, Monochoria vaginalis, Pistia stratiotes, Polygonum hydropiper, Portulaca oleracea, Sagittaria milliacea, Sagittaria sagittifolia, Sphenoclea zeylanica, Trianthema portulacastrum, Typha spp., Isachne globosa, Paspalum distichum, Cyperus difformis, Cyperus haspen, Cyperus iria, Cyperus rotundus, Fimbristylis dichotoma, Fimbristylis miliacea, Scirpus juncoides, Scirpus nipponicus, Scirpus planiculmis, Scirpur royelei, Scirpus juncoides.

The present invention of synergistic herbicidal composition comprising A) Triafamone B) at least one herbicide selected from Bispyribac sodium, Fenoxaprop-P-Ethyl and Cyhalofop butyl C) at least one more herbicide selected from Pyrazosulfuron Ethyl, Ethoxysulfuron, Imazosulfuron, Propyrisulfuron, Penoxsulam, Pyribanzoxim, 2,4-D, Tefuryltrione and Propanil and salts thereof offers advantages as mentioned below;

1. Synergism between three active ingredients in comparison to activity of single ingredients,
2. Covers broad spectrum of weeds
3. Synergism will be useful for control/kill of resistant and tough to control weeds.
4. Useful for control/kill of resistant and tough to control weeds especially grassy weeds like Dactyloctenium aegyptium, Digitaria ciliaris, Digitaria setigera, Eleusine indica, Laptochloa chinensis.
5. Offer longer residual control.
6. Non phytotoxic formulation
7. One shot solution to control weeds in paddy/rice crop. To broaden the spectrum of activity i.e. to control different type of weeds (grasses, sedges and broad leaf weeds)
8. Useful to control/kill resistant and tough to control weeds, especially grassy weeds like Dactyloctenium aegyptium, Digitaria ciliaris, Digitaria setigera, Eleusine indica, Laptochloa chinensis in direct sown/seeded paddy/rice.
9. Residual control (duration of control) of weeds.

Method of application: Spray over the crop and weeds with manual operated knapsack or back pack sprayer or power operated sprayer. It can be applied in transplanted paddy, direct wet sown rice, dry seeded rice, pre-germinated direct sown rice, drilled rice etc. Broadcasting in standing water by manual or by machine. Broadcasting can be done as direct granules broadcasting or mixing with sand or mixing with sand, fertilizer. Jumbo ball application, Shaker bottle application.

Time of application: Before or after paddy sowing or transplanting (0 days to 30 days after sowing or transplanting). Before weed germination or after weed germination. Pre emergence or Post emergence application.

One or more inactive excipient is selected from including but not limited to dispersant, anti-freezing agent, anti-foam agent, wetting agent, suspension aid, anti-microbial agent, thickener, quick coating agent or sticking agents (also referred to as “stickers” or “binders”) and buffering agent.

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 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; sodium naphthalene sulphonate formaldehyde condensates; tristyrylphenolethoxylate phosphate esters; aliphatic alcohol ethoxylates; alky ethoxylates; EO-PO block copolymers; and graft copolymers or mixtures thereof.

Anti-freezing agent as used herein can be selected from the group consisting of polyethylene glycols, methoxypolyethylene glycols, polypropylene glycols, polybutylene glycols, glycerin and ethylene glycol.

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 non-silicone 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; alkyl phenol ethoxylates; and aliphatic alcohol ethoxylates and the salts thereof which are standard in agricultureor mixtures thereof.

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 anti-microbial 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, 1,2-benzisothiazoline-3-one, 2-methyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one, potassium sorbate, parahydroxy benzoates or mixtures thereof.

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; 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; methyl cellulose; sodium carboxymethyl cellulose (SCMC); hydroxyethyl cellulose (HEC) or mixtures thereof. Other types of anti-settling agents are based on modified starches, polyacrylates, polyvinyl alcohol and polyethylene oxide or mixtures.

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(styrene-co maleic 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.

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.

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.

The process for preparing the present herbicidal composition can be modified accordingly by any person skilled in the art based on the knowledge of the manufacturing the formulation. However all such variation and modification is still covered by the scope of present invention.

The process for preparing the present novel composition can be modified accordingly by any person skilled in the art based on the knowledge of the manufacturing the formulation. However all such variation and modification is still covered by the scope of present invention.

EXAMPLES

Example 1: Process of preparation of Suspension Concentrate (SC)
formulation of Triafamone 10%+Bisphyribac sodium 8%+Pyrazosulfuron Ethyl 10%.

Chemical Composition Percent (% w/w)
Triafamone a.i. 10.00
Bispyribac sodium a.i. 8.00
Pyrazosulfuron Ethyl a.i. 10.00
Ethoxylated fatty alcohol 2.00
Acrylic graft copolymer 3.00
Alkylated naphthalene sulfonate, sodium salt 0.50
Silicone based antifoam 0.50
Precipitated silica 0.50
1,2-benzisothiazol-3-one 0.20
Monoethylene glycol 5.00
Xantham gum 0.15
Trisiloxane Ethoxylate 3.00
D.M. water Q.S.
TOTOAL 100.00

Manufacturing process for Susension concentrate (SC) formulation

Step 1. Gum Solution should be made 12-18 hour prior to use. Take required quantity of water, biocide, and defoamer and homogenize, then slowly add gum powder to it and stir till complete dissolution.
Step 2. Charge required quantity of DM water need to be taken in designated vessel for Suspension concentrate production.
Step 3. Add required quantity of Wetting agent, antifreeze, dispersing agent & suspending agents and homogenize the contents for 45 – 60 minutes using high shear homogenizer.
Step 4. Then add technical and other remaining adjuvants excluding ‘thickener’ are added to it and homogenized to get uniform slurry ready for grinding.
Step 5. Before grinding half the quantity of antifoam was added and then material was subjected to grinding in Dyno mill till desired particle size is achieved.
Step 6. Half quantity of the antifoam was added after grinding process completes and before sampling for in process analysis.
Step 7. Finally add gum solution to this formulation and send to QC for quality check.

Example 2: Water Dispersbile Granule (WG) formulation of Triafamone
12.5%+ Bisphyribac sodium 10%+ Pyrazosulfuron Ethyl 12.5%

Chemical Composition Percent (% w/w)
Triafamone a.i. 12.50
Bispyribac sodium a.i. 10.00
Pyrazosulfuron Ethyl a.i. 12.50
Alkyl sulfonate 7.00
sodium salt of sulphonate napthalene formaldehyde condensate 5.00
Corn starch 10.00
Lactose 10.00
Silicon Antifoam 0.50
Silicon Dioxide 3.00
China clay Q.S
TOTOAL 100.00

Manufacturing process for Water Dispersible Granules (WG) by extrusion method
Step 1. Charge the required quantity of filler, wetting agent, dispersing agent, and suspending agent, & technical in premixing blender for homogenization for 30 minutes.
Step 2. Pre-blended material is then grinded through Jet mill/ air classifier mills. Finely grinded material is blended in post blender till it becomes homogeneous. (for approx.. 1.5 hr)
Step 3. Finely grinded powder is mixed with required quantity of water to form extrudable dough.
Step 4. Dough is passed through extruder to get granules of required size.
Step 5. Wet granules are passed through Fluidized bed drier and further graded using vibrating screens.
Step 6. Final product is sent for QC approval.
Step 7. After approval material is packed in required pack sizes.

Example 3: Water Dispersbile Granule (WG) formulation of Triafamone
12.5%+Bisphyribac sodium 10%+Ethoxysulfuron12.5%.

Chemical Composition Percent (% w/w)
Triafamone a.i. 12.50
Bispyribac sodium a.i. 10.00
Ethoxysulfurona.i. 12.50
Alkyl sulfonate 7.00
sodium salt of sulphonate napthalene formaldehyde condensate 5.00
Corn starch 10.00
Lactose 10.00
Silicon Antifoam 0.50
Silicon Dioxide 3.00
China clay Q.S
TOTOAL 100.00

Manufacturing process for Water Dispersible Granules (WG) by spray dried method method

Step 1. Charge required quantity of DM water need to be taken in designated vessel for production.
Step 2. Add required quantity of Wetting agent, dispersing agent, antifoam & suspending agents and homogenize the contents for 45 – 60 minutes using high shear homogenizer.
Step 3. Add required quantity technical and homogenized to get uniform slurry ready for grinding.
Step 4. Now material is subjected to grinding in Bead mill till desired particle size is achieved.
Step 5. After grinding process completes the material is sprayed at required temperature.
Step 6. After completion of spray drying process material is collected and sent for QC department approval.
Step 7. After approval material is packed in required pack sizes.

Example 4: Suspension Concentrate (SC) formulation of Triafamone
2.5%+Bisphyribac sodium 2%+2,4-D Amine salt 35%

Chemical Composition Percent (% w/w)
Triafamone a.i. 2.50
Bispyribac sodium a.i. 2.00
2,4-D Amine salt a.i. 35.00
Ethoxylated fatty alcohol 2.00
Acrylic graft copolymer 3.00
Alkylated naphthalene sulfonate, sodium salt 0.50
Silicone based antifoam 0.50
Precipitated silica 0.50
1,2-benzisothiazol-3-one 0.20
Monoethylene glycol 5.00
Xantham gum 0.15
Trisiloxane Ethoxylate 3.00
D.M. water Q.S.
TOTOAL 100.00

Manufacturing process as defined in example 1.

Example 5: Suspension Concentrate (SC) formulation of Triafamone
10%+Bisphyribac sodium 8%+Tefuryltrione 10%

Chemical Composition Percent (% w/w)
Triafamone a.i. 10.00
Bispyribac sodium a.i. 8.00
Tefuryltrionea.i. 10.00
Ethoxylated fatty alcohol 2.00
Acrylic graft copolymer 3.00
Alkylated naphthalene sulfonate, sodium salt 0.50
Silicone based antifoam 0.50
Precipitated silica 0.50
1,2-benzisothiazol-3-one 0.20
Monoethylene glycol 5.00
Xantham gum 0.15
Trisiloxane Ethoxylate 3.00
D.M. water Q.S.
TOTOAL 100.00

Manufacturing process as defined in example 1.

Chemical Composition A.I.(%) in formulation Total A.I. Type of Formulation Formulation per Hectare (g or ml) Active Ingredient/Hectare
AI-1 AI- 2 AI-3 AI-1 AI- 2 AI- 3 A B C
6 AI-1 AI- 2a AI-3a 10.0 8.0 10.0 28.00 SC 250 25 20 25
7 AI-1 AI- 2a AI-3a 12.5 10.0 12.5 35.00 WG 200 25 20 25
8 AI-1 AI- 2a AI-3b 12.5 10.0 12.5 35.00 WG 200 25 20 25
9 AI-1 AI- 2a AI-3c 2.5 2.0 35.0 39.50 SC 1000 25 20 350
10 AI-1 AI- 2a AI-3d 10.0 8.0 10.0 28.00 SC 250 25 20 25
11 AI-1 AI- 2b AI-3a 5.0 8.0 5.0 18.00 SC 500 25 40 25
12 AI-1 AI- 2b AI-3b 10.0 16.0 10.0 36.00 WG 250 25 40 25
13 AI-1 AI- 2b AI-3c 2.5 4.0 35.0 41.50 SC 1000 25 40 350
14 AI-1 AI- 2b AI-3d 5.0 8.0 5.0 18.00 SC 500 25 40 25
15 AI-1 AI- 2c AI-3a 5.0 8.0 5.0 18.00 SC 500 25 40 25
16 AI-1 AI- 2c AI-3b 10.0 16.0 10.0 36.00 WG 250 25 40 25
17 AI-1 AI- 2c AI-3c 2.5 4.0 35.0 41.50 SC 1000 25 40 350
18 AI-1 AI- 2c AI-3d 6.3 10.0 6.3 22.50 SC 400 25 40 25

AI-1= Triafamone; AI- 2a= Bispyribac sodium; AI- 2b= Fenoxaprop-P-Ethyl; AI- 2c= Cyhalofop butyl; AI-3a =Pyrazosulfuron Ethyl; AI-3b=Ethoxysulfuron; AI-3c= 2,4-D (different salt); AI-3d= Tefuryltrione

Biological Examples:

Field experiments on synergistic inventive mixtures of triafamone+bispyribac sodium+ pyrazosulfuron ethyl, triafamone+bispyribac sodium+ethoxysulfuron were carried on paddy/rice crop to evaluate their phytotoxicity and bioefficacy against different weed flora.

Example 1: Phytotoxicity to direct seed paddy (Oryza sativa L.)
The field experiment was conducted on paddy and experimental details as below:
Crop & Variety : Paddy, Mahamaya (wet direct seeded)
Experimental design : Randomized block design (R.B.D)
Replications : Four
No. of Treatments : Six (6)
Plot size : 30 sq. mt.
Application Time : 15 DAS (Days after sowing)
Observations : Phytotoxicity at 5, 10, 20 DAA
Spray Volume : 375 liter water per hectare
Application Equipment : Manually operated knap sack sprayer fitted with flat fat nozzle

Experimental Methodology:
Paddy crop was raised as per the standard agronomic practices in the field to conduct a trial to assess phytotoxicity of inventive synergistic mixtures. The trial was laid out in Randomized Block Design (RBD) with four replications. For each treatment plot size of 30 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 l/h for spraying. The Untreated check plot was sprayed with water alone. Observations on phytotoxicity viz., leaf tip burning, yellowing, stunting and necrosis was recorded at 5, 10 and 20 days after application (DAA), 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:
Sum of all scores
% Phytotoxicity = ------------------------------------------------------------- X 100
Number of samples x highest rating scale

Table 1: Phytotoxicity on direct seeded paddy
Treatment Details Formulation (ml or g per h) Active Ingredient (g/h) Leaf tip burning (%) Yellowing Stunting (%) Necrosis (%)
5 DAA 10 DAA 5 DAA 10 DAA 10 DAA 20 DAA 10 DAA 20 DAA
Triafamone 10%+Bispyribac sodium 8%+Pyrazosulfuron Ethyl 10% SC 250 25+20+25 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Triafamone 12.5%+Bispyribac sodium 10%+Pyrazosulfuron Ethyl 12.5% WG 200 25+20+25 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Triafamone 12.5%+Bispyribac sodium 10%+Ethoxysulfuron 12.5% WG 200 25+20+25 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Triafamone 2.5%+Bispyribac sodium 2%+2,4-D Amine salt 35% SC 1000 25+20+350 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Triafamone 10%+Bispyribac sodium 8%+Tefuryltrione10% SC 250 25+20+25 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Unweeded control 0 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
ml- milli liter, g- gram, h-hectare, SC- Suspension Concentrate, WP-Wettable Powder

The results of the field trial presented in table 1 indicates that inventive synergistic mixtures of triafomne+bispyribac sodium+pyrazosulfuron ethyl (suspension concentrate (SC) and water dispersible granule (WG) formulation), Triafamone+Bispyribac sodium+Ethoxysulfuron (WG), Triafamone+Bispyribac sodium+2,4-D Amine salt (SC) and Triafamone+Bispyribac sodium+Tefuryltrione (SC) were found safe to the paddy crop and does not cause any Phytotoxicity on plant.

Example 2: Bioefficacy evaluation

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, 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:

The synergistic herbicidal action of the inventive mixtures can be demonstrated by the experiments below.

The field experiment was conducted on paddy and experimental details as below:
Crop & Variety : Paddy, Mahamaya (wet direct seeded)
Experimental design : Randomized block design (R.B.D)
Replications : Three
No. of Treatments : Eight (8)
Plot size : 30 sq. mt.
Application Time : 15 DAS (Days after sowing)
Observations : 15 and 30 DAA
Spray Volume : 375 liter water per hectare
Application Equipment : Manually operated knap sack sprayer fitted with flat fat nozzle

The species wise weed count recorded at 15 and 30 DAA (Days After Application) by using 0.25 m2 quadrant, treatment wise in minimum 4 places randomly selected in the plot per replication. The weeds were allowed to dry and weighed to calculate weed control efficiency. The average of each variable was used together with the sum of all the variables per plot to calculate the percentage of control.

% Weed Control =
Mean weed count in untreated plot – Mean weed control in treated plot
1 - ----------------------------------------------------------------------------------------- X 100
Mean weed count in untreated plot

The % weeds control data used in Colby’s formula to calculate the synergism between three herbicide.

The trials were recorded with high weed population. The weed composition of trials plot were Grasses- 40%, Sedges- 30% and broad leaf weeds- 30% recorded at the time of application. The major grassy weed flora comprises of Echinochloa colonum, Laptochloa chinensis, Dactyloctenium aegyptium, Digitaria ciliaris, Eleusine indica, broad leaf weeds- Sagittaria sagittifolia, Sphenoclea zeylanica Monochoria vaginalis, sedges- Cyperus iria, Fimbristylis miliacea, Scirpur royelei.

Table 2: Bioefficacy against mixed weed flora in direct seeded paddy (Set-1)
Treatment Details Formulation (ml or g per h) Active Ingredient (g/h) % Weed Control Observed % Weed Control Expected Colby Ratio o/e
15 DAA 30 DAA 15 DAA 30 DAA 15 DAA 30 DAA
Triafamone 10%+Bispyribac sodium 8%+Pyrazosulfuron Ethyl 10% SC 250 25+20+25 100.0 99.2 93.25 88.63 1.07 1.12
Triafamone 10%+Bispyribac sodium 8% SC 250 25+20 74.2 68.6 85.75 79.91 0.87 0.86
Triafamone 10%+Pyrazosulfuron Ethyl 10% SC 250 25+25 70.2 64.8 83.03 76.11 0.85 0.85
Bispyribac sodium 8%+Pyrazosulfuron Ethyl 10% SC 250 20+25 66.4 60.2 81.13 73.06 0.82 0.82
Triafamone 20% SC 125 25 64.2 57.8
Bispyribac sodium 10% SC 200 20 60.2 52.4
Pyrazosulfuron Ethyl 10% WP 250 25.0 52.6 43.4
Unweeded control 0 0 0.0 0.0
[ml- milli liter, g- gram, h-hectare, DAA-Days After Application, SC- Suspension Concentrate, WP-Wettable Powder]

Table 3: Bioefficacy against mixed weed flora in direct seeded paddy (set-2)
Treatment Details Formulation (ml or g per h) Active Ingredient (g/h) % Weed Control Observed % Weed Control Expected Colby Ratio o/e
15 DAA 30 DAA 15 DAA 30 DAA 15 DAA 30 DAA
Triafamone 12.5%+Bispyribac sodium 10%+Ethoxysulfuron 12.5% WG 200 25+20+25 100.0 98.8 91.50 87.77 1.09 1.13
Triafamone 12.5%+Bispyribac sodium 10% WG 200 25+20 80.4 76.8 85.19 81.01 0.94 0.95
Triafamone 12.5%+Ethoxysulfuron 12.5% WG 200 25+25 77.8 72.4 80.14 75.14 0.97 0.96
Bispyribac sodium 10%+Ethoxysulfuron 12.5% WG 200 20+25 71.2 67.8 75.43 68.32 0.94 0.99
Triafamone 20% SC 125 25 65.4 61.4
Bispyribac sodium 10% SC 200 20 57.2 50.8
Ethoxysulfuron 15% WG 166.67 25.0 42.6 35.6
Unweeded control 0 0 0.0 0.0
[ml- milli liter, g- gram, h-hectare, DAA-Days After Application, WG/WDG- Water dispersible granule, SC- Suspension Concentrate.]

The field trials results presented in table 2 and table 3 shows that inventive synergistic combination of triafomone+bispyribac sodium+pyrazosulfuron ethyl and triafamone+bispyribac sodium+ethoxysulfuron shows synergistic effect in terms of total weed control i.e. grasses, broadleaf weeds and sedges, in comparison to tank mix combinations of triafamone+bispyribac sodium, triafamone+pyrazosulfuron ethyl, bispyribac sodium+pyrazosulfuron ethyl, bispyribac sodium+ethoxysulfuron as well as their individual treatment. The synergistic inventive mixture of triafamone+bispyribac sodium+pyrazosulfuron ethyl and triafamone+bispyribac sodium+ethoxysulfuron were also providing residual control (longer duration) of weeds which is most advantageous to control some of late emerging weed species.

The outcomes of field trials are-
Synergistic action of triafamone+bispyribac sodium+pyrazosulfuron ethyl and triafamone+bispyribac sodium+ethoxysulfuron in terms of weed control. Controls all kind of weeds i.e. grasses, broad leaf weeds and sedges. Controls tough weeds. Provides residual (long duration) control of weeds. Safe to the paddy crop.
,CLAIMS:CLAIMS

We claim;

[CLAIM 1]. A herbicidal composition comprising
(A) Triafamone;
(B) herbicide selected from Bispyribac sodium, Fenoxaprop-P-Ethyl and Cyhalofop butyl; and
(C) herbicide selected from Pyrazosulfuron Ethyl, Ethoxysulfuron, Imazosulfuron, Propyrisulfuron, Penoxsulam, Pyribanzoxim, 2,4-D, Tefuryltrione and Propanil and salts thereof; and
(D) one or more inactive excipients.

[CLAIM 2]. The herbicidal composition as claimed in claim 1 wherein the component (A) Triafamone is in ratio of 0.1-25%, component (B) herbicide selected from Bispyribac sodium, Fenoxaprop-P-Ethyl and Cyhalofop butyl is in ratio of 0.1-25% and component (C) herbicide selected from Pyrazosulfuron Ethyl, Ethoxysulfuron, Imazosulfuron, Propyrisulfuron, Penoxsulam, Pyribanzoxim, 2,4-D, Tefuryltrione and Propanil and salts thereof is in ratio of 0.1-50%.

[CLAIM 3]. The herbicidal composition as claimed in claim 1-2, wherein inactive excipients are selected from the group consisting of dispersant, anti-freezing agent, anti-foam agent, wetting agent, suspension aid, anti-microbial agent, thickener, quick coating agent or sticking agents and buffering agent.

[CLAIM 4]. The herbicidal composition as claimed in claim 1-3, wherein the formulations comprises of Suspension Concentrate (SC), Suspo emulsion (SE), Capsule Suspension (CS), Oil Dispersion (OD), mixed formulation of CS and SC (ZC), a mixed formulation of CS and SE (ZE), a mixed formulation of CS and EW (ZW), Granules (Soil Applied Granules), Controlled Release Granules (CR Granules), Slow release and Fast release microsphere Granules (MS Granules), Water Soluble Granules (SG), Water dispersible granule (WDG or WG), Jumbo ball formulation, Water soluble bag formulation, Wettable Powder (WP), Soluble Powder (SP).

[CLAIM 5]. The herbicidal composition as claimed in claim 1-3, wherein preferred composition of formulation comprises:
a) Triafamone+Bispyribac sodium+Pyrazosulfuron Ethyl,
b) Triafamone+Bispyribac sodium+Ethoxysulfuron ,
c) Triafamone+Bispyribac sodium+2,4-D (Salt)
d) Triafamone+Fenoxaprop-P-Ethyl+Pyrazosulfuron Ethyl,
e) Triafamone+Eenoxaprop-P-Ethyl+Ethoxysulfuron ,
f) Triafamone+Bispyribac sodium+2,4-D (Salt)
g) Triafamone+Cyhalofop butyl+Pyrazosulfuron Ethyl,
h) Triafamone+Cyhalofop butyl+Ethoxysulfuron ,
i) Triafamone+Cyhalofop butyl+2,4-D (Salt)

[CLAIM 6]. The herbicidal composition as claimed in claim 1-3, wherein Suspension Concentrate (SC) formulation comprises:
i. Triafamone is in ratio of 0.1-25%;
ii. herbicide selected from Bispyribac sodium, Fenoxaprop-P-Ethyl and Cyhalofop butyl is in ratio of 0.1-25%;
iii. herbicide selected from Pyrazosulfuron Ethyl, Ethoxysulfuron, Imazosulfuron, Propyrisulfuron, Penoxsulam, Pyribanzoxim, 2,4-D, Tefuryltrione and Propanil and salts thereof is in ratio of 0.1-50%;
iv. Ethoxylated fatty alcohol;
v. Acrylic graft copolymer;
vi. Alkylated naphthalene sulfonate, sodium salt;
vii. Silicone based antifoam;
viii. Precipitated silica;
ix. 1,2-benzisothiazol-3-one;
x. Monoethylene glycol;
xi. Xantham gum;
xii. Trisiloxane Ethoxylate ;
xiii. D.M. water.

[CLAIM 7]. The herbicidal composition as claimed in claim 1-3, wherein Water Dispersbile Granule (WG) formulation comprises:
i. Triafamone is in ratio of 0.1-25%;
ii. herbicide selected from Bispyribac sodium, Fenoxaprop-P-Ethyl and Cyhalofop butyl is in ratio of 0.1-25%;
iii. herbicide selected from Pyrazosulfuron Ethyl, Ethoxysulfuron, Imazosulfuron, Propyrisulfuron, Penoxsulam, Pyribanzoxim, 2,4-D, Tefuryltrione and Propanil and salts thereof is in ratio of 0.1-50%;
iv. Alkyl sulfonate;
v. sodium salt of sulphonate napthalene formaldehyde condensate;
vi. Corn starch;
vii. Lactose;
viii. Silicon Antifoam;
ix. Silicon Dioxide;
x. China clay.

[CLAIM 8]. The herbicidal composition as claimed in any of the preceding claims, wherein the said composition is to be used to manage is effective in crops selected from GMO (Genetically Modified Organism) and Non GMO varieties of Paddy (Oryza sativa L.) including Indica, Japonica and Javanica race. GMO Paddy. It can be applied in nursery as well as main field after sowing or transplanting. Sugarcane (Saccharum officinarum), Cotton (Gossypium spp.), Jute (Corchorus oliotorus), Wheat (Triticum aestavum), Barley (Hordeum vulgare), Maize (Zea mays), Sorghum (Sorghum bicolor), Ragi (Eleusine coracana), Pearl millet (Pennisetum glaucum), Brinjal (Solanum melongena), Onion (Allium cepa L.), Tomato (Solanum lycopersicun) , Potato (Solanum tuberosum) , Sweet potato (Ipomoea batatas), Chilly (Capsicum annum), Garlic (Allium sativum).

[CLAIM 9]. The synergistic composition as claimed in any of the preceding claims, wherein the said composition is effective against Aeschynomene aspera, Aeschynomene indica, Ageratum conyzoides, Alternanthera sessilis, Alternanthera philoxeroides, Amaranthus spinosus, Amaranthus viridis, Ammania baccifera, Cynodon dactylon, Dactyloctenium aegyptium, Digitaria ciliaris, Digitaria setigera, Ischaemum rugosum, Echinochloa colona, Echinochloa crus-galli, Echinochloa glabrescens, Echinochloa crus-pavonis, Echinochloa esculenta, Echinochloa frumentacea, Echinochloa muricata, Echinochloa oryzoides, Echinochloa paludigena, Eleocharis kuruguwai, Laptochloa chinensis, Eleusine indica, Eclipta alba, Eclipta prostate, Imperata cylindrical, Leersia hexandra, Leptochloa chinensis, Oryza sativa, Panicum repens, Paspalum distichum, Paspalum scrobiculatum, Rottboellia cochinchinensis, Setaria glauca, Bolboschoenus maritimus, Bergia capensis, Commelina benghalensis, Commelina diffusa, Cyanotis axillaris, Eclipta alba, Eclipta prostrate, Eichhornia crassipes, Ipomoea aquatic, Ludwigia adscendens, Ludwigia hyssopifolia, Ludwigia octovalvis, Ludwigia parviflora, Marsilea minuta, Marsilea quadrifoliata, Mimosa diplotricha, Monochoria vaginalis, Pistia stratiotes, Polygonum hydropiper, Portulaca oleracea, Sagittaria milliacea, Sagittaria sagittifolia, Sphenoclea zeylanica, Trianthema portulacastrum, Typha spp., Isachne globosa, Paspalum distichum, Cyperus difformis, Cyperus haspen, Cyperus iria, Cyperus rotundus, Fimbristylis dichotoma, Fimbristylis miliacea, Scirpus juncoides, Scirpus nipponicus, Scirpus planiculmis, Scirpur royelei, Scirpus juncoides.