SYNERGISTIC HERBICIDAL COMPOSITION FOR CONTROLLING WEEDS

Abstract

The present disclosure provides a herbicidal composition comprising: pendimethalin in an amount ranging from 20% to 32% w/w; sulfentrazone in an amount ranging from 8% to 15% w/w; one herbicide selected from: metribuzin, chlorimuron ethyl, and imazethapyr, said one herbicide being in an amount ranging from 0.2% to 12% w/w; and one or more agrochemically acceptable excipients. The present disclosure further relates to a method for controlling unwanted vegetative herbs by applying an effective amount of said herbicidal composition and formulations thereof.

Specification

Description:FIELD OF THE INVENTION
[0001] The present disclosure generally relates to the field of herbicides. Particularly, the present disclosure provides a composition comprising Pendimethalin, sulfentrazone, and one herbicide selected from metribuzin, chlorimuron ethyl, and imazethapyr for controlling weeds, specifically for controlling weeds growing amongst crop plants.

BACKGROUND
[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] Chemical compounds have been developed as herbicides to control a variety of weeds that compete with crop plants, often leading to significant losses for farmers. The effectiveness of weed control depends on several factors, including the herbicide's mode of action, dosage, application rate, and specificity in targeting particular weed species, as well as its mechanism of dissipation. To address the limited specificity of herbicides, which typically target only a few weed species, farmers often resort to applying multiple herbicides at higher rates. However, this approach can lead to antagonistic interactions between the different herbicides, resulting in reduced efficacy in weed control. Additionally, the continuous use of high-dose herbicides can contribute to the development of resistant weed populations, further complicating management efforts. Moreover, excessive herbicide application can also negatively impact crop plants, potentially causing damage that results in reduced yields.
[0004] Efforts have been made to develop compositions that combine different herbicides to address the drawbacks of conventional applications, which often involve using multiple herbicides at high rates. However, these attempts have not proven effective to the desired extent. For example, Indian patent application, 202411065483 discloses a synergistic emulsifiable concentrate composition comprising pendimethalin in an amount between 10% to 20% by weight, and sulfentrazone as in an amount between 5% to 15% by weight; Indian patent application, 202341080514 discloses a suspo-emulsion formulation comprising sulfentrazone (5% to 15% w/w), pendimethalin (20% to 30% w/w) and oxyfluorfen (0.5 to 5% w/w); Indian patent application 202341080514 discloses a suspension concentrate composition comprising sulfentrazone and metribuzin.
[0005] Therefore, there is a pressing need for a new and improved herbicidal composition to effectively control weeds that grow among crop plants. The present invention meets this need by overcoming the limitations identified in the prior art, providing enhanced efficacy and potential benefits for weed management in agricultural settings.

OBJECTS
[0006] The primary object of the present invention is to provide a composition that overcomes one or more limitations associated with conventional approaches.
[0007] It is an object of the present disclosure to provide a composition that may aid in controlling a wide array of weeds that grow among crop plants.
[0008] It is an object of the present disclosure to provide a composition that exhibits synergistic activity/functional reciprocity.
[0009] It is an object of the present disclosure to provide a stable composition.
[00010] It is an object of the present disclosure to provide a composition that is easy to prepare and economical.

SUMMARY
[00011] The present disclosure generally relates to the field of herbicides. Particularly, the present disclosure provides a composition comprising Pendimethalin, sulfentrazone, and one herbicide selected from metribuzin, chlorimuron ethyl, and imazethapyr for controlling weeds specifically for controlling weeds growing amongst crop plants.
[00012] An aspect of the present disclosure relates to a herbicidal composition including: pendimethalin in an amount ranging from 20% to 32% w/w; sulfentrazone in an amount ranging from 8% to 15% w/w; one herbicide selected from: metribuzin, chlorimuron ethyl, and imazethapyr, said one herbicide being in an amount ranging from 0.2% to 12% w/w; and one or more agrochemically acceptable excipients.
[00013] In an embodiment, the composition includes: pendimethalin in an amount ranging from 20% to 32% w/w; sulfentrazone in an amount ranging from 8% to 15% w/w; metribuzin in an amount ranging from 0.2% to 12% w/w; and one or more agrochemically acceptable excipients.
[00014] In an embodiment, the composition includes: pendimethalin in an amount ranging from 20% to 32% w/w; sulfentrazone in an amount ranging from 8% to 15% w/w; chlorimuron ethyl in an amount ranging from 0.2% to 12% w/w; and one or more agrochemically acceptable excipients.
[00015] In an embodiment, the composition comprises: pendimethalin in an amount ranging from 20% to 32% w/w; sulfentrazone in an amount ranging from 8% to 15% w/w; imazethapyr in an amount ranging from 0.2% to 12% w/w; and one or more agrochemically acceptable excipients.
[00016] In an embodiment, the one or more agrochemically acceptable excipient is selected from solvent, wetting agent, emulsifier, dispersing agent, suspending agent, anti-freezing agent, anti-foaming agent, preservative, thickener, stabilizer, buffering agent, solid carrier, humectant, disintegrating agents, fillers, colorants, fertilizers, surfactants, tackifiers, and wall forming material.
[00017] In an embodiment, the composition is formulated into any of: Capsule suspension (CS), Dispersible concentrate (DC), Emulsifiable concentrate (EC), Emulsion, water in oil (EO) emulsion, oil in water (EW) emulsion, Jambo balls or bags (bags in water-soluble pouch), Micro-emulsion (ME), Oil dispersion (OD), Oil miscible flowable concentrate (oil miscible suspension (OF), Oil miscible liquid (OL), Suspension concentrate (SC), Suspo-emulsion (SE), Soluble concentrate (SL), Water dispersible granule (WG or WDG), Water soluble granule (SG), Water soluble powder (SP), Wettable powder (WP), Zeon concentrate (ZC), a mixed formulation of CS and SE (ZE), and a mixed formulation of CS and EW (ZW). In an embodiment, the composition is formulated into any of: Suspo-emulsion (SE) and Zeon concentrate (ZC).
[00018] Another aspect of the present disclosure relates to a method for controlling unwanted vegetative herbs by application of an effective amount of a herbicidal composition including: pendimethalin in an amount ranging from 20% to 32% w/w; sulfentrazone in an amount ranging from 8% to 15% w/w; one herbicide selected from: metribuzin, chlorimuron ethyl, and imazethapyr, said one herbicide being in an amount ranging from 0.2% to 12% w/w; and one or more agrochemically acceptable excipients.
[00019] Other aspects, advantages, and salient features of the invention will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the exemplary embodiments of the invention.

DETAILED DESCRIPTION
[00020] The embodiments herein and the various features and advantageous details thereof are explained more comprehensively with reference to the non-limiting embodiments that are detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of the ways in which the embodiments herein may be practiced and to further enable those of skills in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
[00021] Unless otherwise specified, all terms used in disclosing the invention, including technical and scientific terms, have the meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. By means of further guidance, term definitions may be included to better appreciate the teaching of the present invention.
[00022] As used in the description herein, the meaning of "a," "an," and "the" includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of "in" includes "in" and "on" unless the context clearly dictates otherwise.
[00023] As used herein, the terms "comprise", "comprises", "comprising", "include", "includes", and "including" are meant to be non- limiting, i.e., other steps and other ingredients which do not affect the end of result can be added. The above terms encompass the terms "consisting of" and "consisting essentially of".
[00024] The terms "weight percent", "vol-%", "percent by weight", "% by weight", and variations thereof, as used herein, refer to the concentration of a substance as the weight of that substance divided by the total weight of the composition and multiplied by 100. It is understood that, as used here, "percent", "%", and the like are intended to be synonymous with "weight percent", "vol-%", etc.
[00025] In some embodiments, the numbers expressing quantities of ingredients, properties such as concentration, reaction conditions, and so forth, used to describe and claim certain embodiments of the invention are to be understood as being modified in some instances by the term "about". Accordingly, in some embodiments, the numerical parameters set forth in the written description are approximations that can vary depending on the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable.
[00026] The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein.
[00027] As described herein, the term 'effective amount of' is used to imply the amount of the herbicide compound used in the composition or the amount of composition or the amount of formulation in accordance with the present invention that is necessary for the elimination, prevention, or curb of growth of unwanted or undesired plants and vegetation referred as weeds without substantially causing harmful effect to crop plants. The effective amount may be dependent on the time, soil, target weeds, crops, and environmental conditions at the time of application.
[00028] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified.
[00029] The description that follows, and the embodiments described therein, are provided by way of illustration of an example, or examples, of particular embodiments of the principles and aspects of the present disclosure. These examples are provided for the purposes of explanation, and not of limitation, of those principles and the disclosure.
[00030] The headings and abstract of the invention provided herein are for convenience only and do not interpret the scope or meaning of the embodiments.
[00031] The following discussion provides many example embodiments of the inventive subject matter. Although each embodiment represents a single combination of inventive elements, the inventive subject matter is considered to include all possible combinations of the disclosed elements. Thus if one embodiment comprises elements A, B, and C, and a second embodiment comprises elements B and D, then the inventive subject matter is also considered to include other remaining combinations of A, B, C, or D, even if not explicitly disclosed.
[00032] The present disclosure generally relates to the field of herbicides. Particularly, the present disclosure provides a composition comprising Pendimethalin, sulfentrazone, and one herbicide selected from metribuzin, chlorimuron ethyl, and imazethapyr for controlling weeds specifically for controlling weeds growing amongst crop plants.
[00033] The present disclosure is based on a surprising discovery: when Pendimethalin, sulfentrazone, and a herbicide selected from metribuzin, chlorimuron ethyl and imazethapyr are combined, the resulting composition exhibits exceptional herbicidal activity. The herbicidal activity was more prominent when said active ingredients were combined in the specified weight percentages owing to functional reciprocity and synergistic activity therebetween. It is observed that the composition significantly enhances weed control, particularly in crops, compared to the use of individual active ingredients or binary compositions. The observed synergistic effect is both unexpected and remarkable.
[00034] Accordingly, aspect of the present disclosure relates to a herbicidal composition including: pendimethalin in an amount ranging from 20% to 32% w/w; sulfentrazone in an amount ranging from 8% to 15% w/w; one herbicide selected from: metribuzin, chlorimuron ethyl, and imazethapyr, said one herbicide being in an amount ranging from 0.2% to 12% w/w; and one or more agrochemically acceptable excipients. In an embodiment, the composition is a synergistic composition for controlling weeds, specifically for controlling weeds growing amongst crop plants.
[00035] In an embodiment, the composition includes: pendimethalin in an amount ranging from 20% to 32% w/w; sulfentrazone in an amount ranging from 8% to 15% w/w; metribuzin in an amount ranging from 0.2% to 12% w/w; and one or more agrochemically acceptable excipients. In an embodiment, the composition is a synergistic composition for controlling weeds, specifically for controlling weeds growing amongst crop plants.
[00036] In an embodiment, the composition includes: pendimethalin in an amount ranging from 20% to 32% w/w; sulfentrazone in an amount ranging from 8% to 15% w/w; chlorimuron ethyl in an amount ranging from 0.2% to 12% w/w; and one or more agrochemically acceptable excipients. In an embodiment, the composition is a synergistic composition for controlling weeds, specifically for controlling weeds growing amongst crop plants.
[00037] In an embodiment, the composition comprises: pendimethalin in an amount ranging from 20% to 32% w/w; sulfentrazone in an amount ranging from 8% to 15% w/w; imazethapyr in an amount ranging from 0.2% to 12% w/w; and one or more agrochemically acceptable excipients. In an embodiment, the composition is a synergistic composition for controlling weeds, specifically for controlling weeds growing amongst crop plants.
[00038] In an embodiment, the one or more agrochemically acceptable excipient is selected from solvent, wetting agent, emulsifier, dispersing agent, suspending agent, anti-freezing agent, anti-foaming agent, preservative, thickener, stabilizer, buffering agent, solid carrier, humectant, disintegrating agents, fillers, colorants, fertilizers, surfactants, tackifiers, and wall forming material.
[00039] Exemplary solvent or co-solvent includes, but not limited to Naphtha, Dimethyl sulfoxide, Butanol, N-octanol, N-Propanol, 2-ethyl hexanol, Tetrahydro furfuryl alcohol, Isophorone, Fatty acid dimethyl amide, acetone, toluene, xylene. Paraffinic hydrocarbons, cyclohexanone, acetophenone, isophorone, N-Methyl-2-pyrrolidone, and ester solvents such as methyloleate, dimethylamide and morpholineamide derivatives of C6-C16 fatty acids, and dimethylsulfoxide (DMSO), n-alkylpyrrolidones, fatty acid dimethyl esters, fatty acid esters, dibasic esters, aromatic hydrocarbons and/or aliphatic hydrocarbons, aromatic hydrocarbons, methylpyrrolidinone (NMP), dimethylformamide (DMF), dimethylisosorbide (DMI), isophorone, acetophenone, 1,3-dimethyl-2-imidazolidonone, dimethyl and diethethylcarbonates, alcohols including methanol, ethanol, iso-propanol, n-propanol, n-butanol, iso-butanol, tert-butanol, water, and the mixtures thereof.
[00040] Exemplary wetting agent includes, but not limited to Polyethylene-polypropylene glycol monobutyl ether, Ethylene oxide/propylene oxide block copolymer, Polyarylphenyl ether phosphate, Polyalkoxylated butyl ether, Ethoxylated Fatty Alcohol, Sodium dioctyl sulphosuccinate, sodium lauryl sulphate, Lauryl alcohol ethoxylate, and sodium dodecyl benzene sulfonate, alkyl diphenyl sulfonates, sodium isopropyl naphthalene sulfonate, Alkyl naphthalene sulfonate, and the mixtures thereof.
[00041] Exemplary emulsifier includes, but not limited to salts of Polyoxyethylene sorbitan monooleate, dodecylbenzene sulphonate, e.g. Ca-salts or amine salts, and sulphonates of other C11-C16 alkylbenzenes, alkylether sulphates, alkylphenoletherphosphates and ester phosphates; non-ionic surfactants such as alkoxylated alcohols and alkylphenols, Octyl phenol ethoxylate, ethoxylated fatty acids, ethoxylated vegetable oils, e.g. ethoxylated castor oil, fatty acid esters, e.g. of sorbitol, and their ethoxylated derivatives, ethoxylated amines, ethoxylated polyaryl phenol and condensates of glycerol; and catanionic emulsifiers such as a cationic amine, optionally in combination with an alkyl sulphonate or ether sulphonate or ether phosphate, alkoxylated alcohols; alkoxylated alkylphenols; ethoxylated fatty acids; ethoxylated vegetable oils; ethoxylated tristyrylphenol; fatty acid esters of sorbitol and ethoxylated derivatives thereof; ethoxylated amines and condensates of glycerol; sulfonated alkylbenzenes in the range C11-C16 and salts thereof; alkylether sulphates; alkyletherphosphates; alkylphenoletherphosphates; or combinations thereof; salts of phosphate esters of ethoxylated tristyrylphenol; salts of sulphated ethers of ethoxylated tristyrylphenol; or a catanionic system, wherein a cationic amine is present in combination with an alkyl sulphonate, an alkylethersulphonate, an ether sulphate, or an ether phosphate such as an alkyletherphosphate, nonylphenol polyethoxylate, nonylphenol polyethoxy ethanol, castor oil polyglycol ethers, polyadducts of ethylene oxide and polypropylene, tributyl phenoxy polyethoxy ethanol, octyl phenoxy polyethoxy ethanol, Isodecyl Alcohol Ethoxylate, and the mixtures thereof.
[00042] Exemplary dispersing agent includes, but are not limited to Octyl phenyl polyglycol ether, Ethoxylated Tristyrylphenol Phosphate Potassium Salt, Acrylate-methylstyrene-styrene polymer ammonium salt, Ethoxylated Polyarylphenol Phosphate Amine Salt, 2-Propenoic acid, 2-methyl-, polymer with .alpha.-methyl-.omega.-hydroxypoly(oxy-1,2-ethanediyl) and methyl 2-methyl-2-propenoate graft polymer, polyesters, polyamides, poly- carbonates, polyurea and polyurethanes, acrylic 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 copolymers and 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), Polyarylphenyl ether sulphate ammonium salt, alkyl 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 for several weeks when placed in an application environment. Examples of biodegradable polymers that are useful in the present invention include biodegradable polyesters, starch, polylactic acid starch blends, polylactic acid, poly(lactic acid-glycolic acid) copolymers, polydioxanone, cellulose esters, ethyl cellulose, cellulose acetate butyrate, starch esters, starch esteraliphatic polyester blends, modified corn starch, polycaprolactone, poly(namylmethacrylate), wood rosin, polyanhydrides, polyvinylalcohol, polyhydroxybutyratevalerate, biodegradable aliphatic polyesters, and polyhydroxybutyrate or mixtures thereof. The examples of dispersing agents are alkylated naphthalene sulfonate, sodium salt, sodium salt of naphthalene sulfonate condensate, sodium ligno sulfonate, sodium ploycarboxylate, EO/PO block copolymer, phenol sulfonate, sodium methyl oleoyl taurate, styrene acrylic acid copolymer, propyleneoxide-ethyleneoxide-copolymer, polyethylene glycol 2,4,6-tristyrylphenyl ether, tristyrylphenol-polyglycolether-phosphate, tristyrylphenole with 16 moles EO, tristyrylphenol-polyglycol ether-phosphate, oleyl-polyglycol ether with ethylene oxide, tallow fatty amine polyethylene oxide, nonylphenol polyglycol ether with 9-10 moles ethylene oxide, and the mixtures thereof.
[00043] Exemplary suspending agent includes, but not limited to aluminum magnesium silicate, bentonite clay, silica, silicone dioxide, attapulgite clay, Kaoline clay, Tributyl phenyl polyglycol ether, and the mixtures thereof.
[00044] Exemplary anti-freezing agent includes, but not limited to Propane-1,2,3-triol, Polydimethyl siloxane, glycol (monoethylene glycol), diethylene glycol, polypropylene glycol, polyethylene glycol), propane diols, glycerin or the urea, magnesium sulfate heptahydrate, sodium chloride, and the combinations thereof.
[00045] Exemplary anti-foaming agent includes, but not limited to silicone oil, silicone compound, C10～C20 saturated fat acid compounds or C8～C10 aliphatic alcohols compound, silicone emulsion, vegetable oil based antifoam, tallow based fatty acids, Polydimethyl siloxane and the mixtures thereof.
[00046] Exemplary preservative includes, but not limited to 1,2- benzisothiazoline-3-one, 1,2-Benzisothiazol-3(2H)-one, 2-methyl-4-isothiazolin-3-one, 5-chloro-2- methyl-4-isothiazolin-3-one, propionic acid and its sodium salt, sorbic acid and its sodium or potassium salt, benzoic acid and its sodium salt, p-hydroxy benzoic acid sodium salt; methyl p-hydroxy benzoate; and biocide such as sodium benzoate, potassium sorbate, para hydroxy benzoates, and the combinations thereof.
[00047] Exemplary thickener includes, but not limited to montmorillonite (e.g. bentonite; magnesium aluminum silicate; and attapulgite), polysaccharides such as natural extracts of seeds and seaweeds, cellulose or derivatives thereof, guar gum; locust bean gum; carrageenan; xanthan gum; alginates; methyl cellulose; sodium carboxymethyl cellulose (SCMC); hydroxyethyl cellulose (HEC), modified starches, polyacrylates, polyvinyl alcohol, polyethylene oxide, and the mixtures thereof.
[00048] Exemplary stabilizer includes, but not limited to Butylated Hydroxytoluene (BHT) and Epoxidized Soybean Oil (ESBO), Epichlorohydrin, and the combinations thereof.
[00049] Exemplary buffering agent includes, but not limited to calcium hydroxyapatite, Potassium Dihydrogen Phosphate, Sodium Hydroxide, carbonated apatite, calcium carbonate, sodium bicarbonate, tricalcium phosphate, calcium phosphates, carbonated calcium phosphates, amine monomers, lactate dehydrogenase, magnesium hydroxide, Sulphuric acid, and the mixtures thereof.
[00050] Exemplary solid carrier includes, but not limited to china clay, silica, lactose anhydrous, ammonium sulfate, sodium sulfate anhydrous, corn starch, urea, EDTA, urea formaldehyde resin, diatomaceous earth, kaolin, bentonite, kieselguhr, fuller's earth, attapulgite clay, bole, loess, talc, chalk, dolomite, limestone, lime, calcium carbonate, powdered magnesia, magnesium oxide, magnesium sulphate, sodium chloride, gypsum, calcium sulphate, pyrophyllite, silicates and silica gels; fertilizers such as, for example, ammonium sulphate, ammonium phosphate, ammonium nitrate and urea; natural products of vegetable origin such as, for example, grain meals and flours, bark meals, wood meals, nutshell meals and cellulosic powders; and synthetic polymeric materials such as, for example, ground or powdered plastics and resins, bentonites, zeolites, titanium dioxide, iron oxides and hydroxides, aluminium oxides and hydroxides, or organic materials such as bagasse, charcoal, synthetic organic polymers, and the mixtures thereof.
[00051] Exemplary humectant includes, but not limited to urea, humic acid, glycerol, lactose, and the mixtures thereof.
[00052] Exemplary disintegrating agent includes, but not limited to citric acid, succinic acid, sodium bicarbonate, and the mixtures thereof.
[00053] Exemplary filler includes, but not limited to kaolin, clays, talc, chalk, glass fiber, highly disperse silica, silicates, diatomite, calcite, talcum, carbonates such as calcium carbonate, magnesium carbonate, wood flour, cellulose, pulverized wood, diatomaceous earth, montmorillonite, and highly dispersed silicic acid and the mixture thereof.
[00054] Exemplary colorant includes, but not limited to E102 Tartrazine, E104 Quin- oline Yellow, E110 Sunset Yellow FCF, E120 − Cochineal, carminic acid, Carmines, E122 Azorubine (Carmoisine), E123 Amaranth, E124 Ponceau 4R (Cochineal Red A), E127 Erythrosine, E129 Allura Red, E131 Patent Blue, and the mixtures thereof.
[00055] Exemplary fertilizer includes, but not limited to ammonium sulphate, ammonium phosphate, ammonium nitrate and urea; natural products of vegetable origin such as, for example, grain meals and flours, bark meals, wood meals, nutshell meals and cellulosic powders; and synthetic polymeric materials such 15 as, for example, ground or powdered plastics and resins, bentonites, zeolites, titanium dioxide, iron oxides and hydroxides, aluminium oxides and hydroxides, or organic materials such as bagasse, charcoal, or synthetic organic polymers, and the mixtures thereof.
[00056] Exemplary surfactant includes, but not limited alkoxylated alcohols and alkylphenols, ethoxylated fatty acids, ethoxylated vegetable oils, e.g. ethoxylated castor oil, fatty acid esters, e.g. of sorbitol, and their ethoxylated derivatives, ethoxylated amines, condensates of glycerol, trisiloxane ethoxylate, polydimethylsiloxane, polyoxyethylene methyl polysiloxane, polyoxyalkylene methyl polysiloxane, polyether polymethyl siloxane copolymer, heptamethyl trisiloxane, Polyalkyleneoxide modified 15 heptamethyl trisiloxane, polyether modified polysiloxan and the mixtures thereof.
[00057] Exemplary tackifier includes, but not limited to the alkali metal salts, alkaline earth metal salts and ammonium salts of aromatic sulfonic acids, for example lignosulfonic acids, phenolsulfonic acids, naphthalenesulfonic acids, and dibutylnaphthalenesulfonic acid, and of fatty acids, alkyland alkylarylsulfonates, alkyl sulfates, lauryl ether sulfates and fatty alcohol sulfates, and salts of sulfated hexa-, heptaand octadecanols, and also of fatty alcohol glycol ethers, condensates of sulfonated naphthalene and its derivatives with formaldehyde, condensates of naphthalene or of the naphthalene sulfonic acids with phenol and formaldehyde, polyoxyethylene octylphenol ether, ethoxylated isooctyl-, octyl- or nonylphenol, alkylphenyl or tributylphenyl polyglycol ether, alkyl aryl polyether alcohols, isotridecyl alcohol, fatty alcohol/ethylene oxide condensates, ethoxylated castor oil, polyoxyethylene alkyl ethers or polyoxypropylene alkyl ethers, lauryl alcohol polyglycol ether acetate, sorbitol esters, lignosulfite waste liquors and proteins, denatured proteins, polysaccharides (e.g., methylcellulose), hydrophobically modified starches, polyvinyl alcohol, polycarboxylates, polyalkoxylates, polyvinyl amine, polyethyleneimine, polyvinylpyrrolidone and copolymers, and the mixtures thereof.
[00058] Exemplary wall forming material includes, but not limited to Tetramethylene diisocyanate, pentamethylene diisocyanate, hexamethylene diisocyanate, toluene diisocyanate, 4,4-diphenylmethene diisocyanate (MDI), polymethylene polyphenylene isocyanate, 2,4,4'-diphenyl ether tri-isocyanate, 3,3'-dimethyl- 4,4'-diphenyl diisocyanate, 3,3'-dimethoxy-4,4'-diphenyl diisocyanate, 1,5-naphthylene diisocyanate and 4,4'4"-triphenylmethane tri-isocyanate, toluene diisocyanate or polymethylene polyphenylisocyanate, polyurethane comprising of polyfunctional iso cyanate and a polyamine in polarized form; Diethylene triamine, Ammonia, hexamine, ethylenediamine, propylene-1,3-diamine, tetramethylenediamine, pentamethylenediamine, 1,6- hexamethylenediamine, diethylenetriamine, triethylenetetramine, tetra ethylene pentamine, pentaethylenehexamine, 4,9-dioxadodecane-1, 12-diamine, 1,3- phenylenediamine, 2,4- and 2,6-toluenediamine and 4,4'-diaminodiphenylmethane, 1,3-phenylenediamine, 2,4- and 2,6- toluenediamine, 4,4′-diaminodiphenylmethane, 1,5-diaminonaphthalene, 1,3,5- triaminobenzene, 2,4,6-triaminotoluene, 1,3,6-triaminonaphthalene, 2,4,4′-triaminodiphenyl ether, 3,4,5-triamino-1,2,4-triazole, 1,4,5,8-tetraminoanthraquinone, and the mixtures thereof.
[00059] The composition of the present disclosure comprises active ingredients having functional reciprocity therebtween thereby reducing the dose of individual ingredients or of the combination as such. Consequently, the same may also aid in reducing the number of applications and duration of application of composition.
[00060] In an embodiment, the herbicidal composition can control and shows broad spectrum activity and up to 99% reduction in weeds. In an embodiment, the herbicidal composition shows at least 50%, at least 60%, at least 70%, at least 80%, at least 90%, at least 95% or at least 99% reduction in weeds.
[00061] In an embodiment, the composition may be used for the control of the growth, proliferation or germination of weeds.
[00062] The present composition can be used to control undesirable vegetation and weeds in crop plant. In an embodiment, the composition of present disclosure can be used to control all kind of monocots, dicots, sedges weeds, or any undesired or harmful plants. The composition can also control annual and perennial weeds. The most common weeds controlled by present compositions include, but are not limited to Abutilon indicum, Acalypha indica, Acanthospermum hispidum, Achyranthes aspera, Aerva tomentosa, Ageratum conyzoides, Alhagi camelorum, Amaranthus hybridus, Amaranthus spinosus, Amaranthus viridis, Ammannia baccifera, Anagallis arvensis, Argemone mexicana, Artemisia nilagiricia, Asphodelus tenuifolius, Avena fatua, Avena ludoviciana, Bidens pilosa, Boerhaavia diffusa, Boerhavia repanda, Brachiaria mutica, Brassica kaber, Bromus tectorum, Calotropis gigantea, Cannabis sativa, Carthamus axyacantha, Cassia tora, Celosia argentea, Centella asiatica, Chenopodium album, Chenopodium murale, Chloris barbata, Chrozophora rottlerii, Cichorium intybus, Cirsium arvense, Clitoria ternatea, Cnicus arvensis, Commelina benghalensis, Commelina communis, Commelina diffusa, Convolvulus arvensis, Conyza canadensis, Corchorus acutangulus, Coronopus didymus, Crotalaria serice, Cucumis callosus, Cuscuta campestris, Cuscuta chinensis, Cynodon dactylon, Cyanotis axillaris, Cyperus esculenthus, Cyperus irria, Cyperus rotundus, Dactyloctenium aegyptium, Datura stramonium, Daucus carota, Digera arvensis, Digitaria sanguinalis, Dinebra retroflexa, Echinochola colonum, Echinochola crusgalli, Eclipta alba, Eichhornia crassipes, Elephantopus scaber, Eleusine indica, Eragrostis major, Euphorbia geniculata, Euphorbia hirta, Fimbristylis miliacea, Fumaria indica, Gynandropsis gynandra, Heliotropium indicum, Indigofera glandulosa, Ipomea aquatica, Lantana camara, Lathyrus aphaca, Launaea asplenifolia, Launaea nudicaulis, Leucas aspera, Ludwigia parviflora, Marsilea quadrifoliata, Medicago denticulate, Mimosa pudica, Melilotus alba, Melilotus indica, Ocimum canum, Oenothera biennis, Opuntia dillenil, Orobanche ramosa, Oryza longistaminata, Oryza sativa, Oxalis corniculata, Oxalis latifolia, Parthenium hysterophorus, Paspalum sanguinale, Phalaris minor, Phyllanthus niruri, Physalis minima, Polypogon monspeliensis, Portulaca oleracea, Prosopis juliflora, Rumex dentatus, Saccharum spontaneum, Stearia glauca, Seteria viridis, Sida spinosa, Silene antirrhina, Sisymbrium irio, Solanum nigrum, Solanum surattense, Sonchus oleraceous, Sorghum halepense, Spergula arvensis, Sphenocleazeylanica Gaertn, Striga asiatica, Tagetes minuta, Trianthema monogyna, Trianthema portulacastrum, Tribulus terrestris, Trigonelia polycerata, Vernonia cinerea, Vicia sativa and Xanthium strumarium.
[00063] The composition in accordance with the present invention can be used to control harmful plants that are difficult to control and that sprout from rhizomes, rhizomes, or other permanent organs.
[00064] The composition in accordance with the present invention can be used to control a wide array of weeds in non-cultivated areas, on paths, track systems, industrial areas ("industrial weed control"), or the like.
[00065] In an embodiment, the composition of the present invention may be used to control the target weeds among the field GMO (Genetically Modified Organism) and Non-GMO varieties including but not limited to, Soybean (Glycine max), Sugarcane (Saccharum officinarum), Groundnut/Peanut (Arachis hypogaea), Green gram (Vigna radiata), Black gram (Vigna mungo), Chickpea (Cicer aritinum), Cowpea (Vigna unguiculata), Red gram (Cajanus cajan), French bean (Phaseolus vulgaris), Indian bean (Lablab purpureus), Horse gram (Macrotyloma uniflorum), Field pea (Pisum sativum), Cluster bean (Cyamopsis tetragonoloba), Lentils (Lens culinaris), and the likes.
[00066] In one embodiment, the present disclosure includes crops that have been rendered tolerant to herbicides or classes of herbicides (e.g. ALS-, GS-, EPSPS-, PPO-, ACCase- and HPPD-inhibitors) by conventional methods of breeding or by genetic engineering. Examples of crops that have been rendered tolerant to herbicides by genetic engineering methods include e.g. glyphosate- and glufosinate-resistant soybean, imazethapyr tolerant paddy/ rice. Other useful crop plants include turf grass for example in golf-courses, lawns, parks, and roadsides, or grown commercially for sod, and ornamental plants such as flowers or bushes.
[00067] In one embodiment the composition can be used to control weeds growing along with crops that have become tolerant to herbicides or classes of herbicides by conventional breeding or genetic engineering methods.
[00068] In one embodiment the composition can be used in known plant crops or tolerant crop plants that are still to be developed, are modified by conventional mutagenesis, or are genetically modified for any property in comparison to previously occurring plants.
[00069] In an embodiment, the composition of the present invention can be used to delay, reduce, and/or avoid the onset of herbicidal resistance.
[00070] In an embodiment, the composition of the present invention can be used to control unwanted vegetation in plantation crops, orchards, fallow lands, water bodies, field bunds, and the like.
[00071] In an embodiment, the composition of the present invention may be formulated into formulation including a solid, liquid, or semi-solid formulation.
[00072] In an embodiment, the composition is formulated into any of: Capsule suspension (CS), Dispersible concentrate (DC), Emulsifiable concentrate (EC), Emulsion, water in oil (EO) emulsion, oil in water (EW) emulsion, Jambo balls or bags (bags in water-soluble pouch), Micro-emulsion (ME), Oil dispersion (OD), Oil miscible flowable concentrate (oil miscible suspension (OF), Oil miscible liquid (OL), Suspension concentrate (SC), Suspo-emulsion (SE), Soluble concentrate (SL), Water dispersible granule (WG or WDG), Water soluble granule (SG), Water soluble powder (SP), Wettable powder (WP), Zeon concentrate (ZC), a mixed formulation of CS and SE (ZE), and a mixed formulation of CS and EW (ZW).
[00073] In an embodiment, the composition is formulated into any of Suspo-emulsion (SE) and Zeon concentrate (ZC).
[00074] In an embodiment, the present disclosure relates to a process of preparing the composition of the present invention or formulation comprising the composition of the present invention by any conventional method known in the art.
[00075] In an embodiment, the process may comprise the steps of milling, blending, drying, packaging, combinations thereof, and the like.
[00076] Another aspect of the present disclosure relates to a method for controlling unwanted vegetative herbs by application of an effective amount of a herbicidal composition including: pendimethalin in an amount ranging from 20% to 32% w/w; sulfentrazone in an amount ranging from 8% to 15% w/w; one herbicide selected from: metribuzin, chlorimuron ethyl, and imazethapyr, said one herbicide being in an amount ranging from 0.2% to 12% w/w; and one or more agrochemically acceptable excipients.
[00077] In still another embodiment, the present disclosure relates to a method of preventing undesired plants from infecting crops by applying a herbicidally effective amount of the composition of the present invention or formulation comprising the same.
[00078] In yet another embodiment, the present disclosure relates to the use of the composition of the present invention or formulation comprising the same on unwanted vegetation or plants.
[00079] The formulations present in the commercial form for example wettable powders, emulsifiable concentrates, dispersions, and water-dispersible granules using water for use are optionally diluted customarily with water or other inert substances before use. The manner of use can include mixing the formulation with water in the tank and the spray mixture, application before or after sowing, application to the open furrow in which the seeds have been sown, seed dressing, or treatment of the germinated seedlings.
[00080] The composition of the present invention as such or formulation comprising the same can be applied to the plants (for example harmful plants such as mono- or dicotyledon weeds or undesired crop plants), the seeds (for example grains, seeds, or vegetative propagation organs such as tubers or shoot parts with buds) or the area on which the plants grow (for example the area under cultivation).
[00081] The composition of the present invention as such or formulation comprising the same can be applied in the pre-sowing (possibly also by incorporation into the soil), pre-emergence, or post-emergence methods. Preference is given to use in the early post-sowing pre-emergence process or in the post-emergence process of plantation crops against harmful plants which have not yet emerged or have already emerged. The application can also be integrated into weed management systems, with shared multiple applications for example sequential applications.
[00082] In an embodiment, the composition or formulation in accordance with the present disclosure may be applied via the tank mix method or sequential application. The composition may be used pre-emergence or post-emergence of undesired plants. It may be applied on the locus of the plant, including all plant parts, or on the soil or turf of growth. It may be applied before or after the crop seeds are planted.
[00083] In an embodiment, the composition lowers the application rate of active compounds on the undesired plants based on the formulation the way of application may be selected from spraying, dusting, scattering, soaking, and the like.
[00084] In an embodiment, the composition or formulation comprising the same slows down the growth or kills the undesired plants. The herbicidal compounds comprised in the composition in a synergistic manner intervene in the undesired plant's own metabolism and can thus be used to influence plant constituents in a targeted manner and to facilitate the harvest, e.g. by triggering desiccation and stunted growth. Furthermore, they are also suitable for general control and inhibition of undesirable vegetative growth without killing the plants, which can play an important role in many monocotyledonous and dicotyledon crops, as this can reduce or completely prevent storage.
[00085] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the scope of the embodiments as described herein.
EXAMPLES
[00086] The disclosure will now be illustrated with working examples, which are intended to illustrate the working of disclosure and not intended to take restrictively to imply any limitations on the scope of the present disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood to one of ordinary skill in the art to which this disclosure belongs. Although methods and materials similar or equivalent to those described herein can be used in the practice of the disclosed methods and compositions, the exemplary methods, devices, and materials are described herein. It is to be understood that this disclosure is not limited to particular methods, and experimental conditions described, as such methods and conditions may vary.
[00087] Example 1: Pendimethalin 28% + Sulfentrazone 14% + Metribuzin 3% SE (Suspo-Emulsion)
Table 1 - SE formulation of Pendimethalin 28% + Sulfentrazone 14% + Metribuzin 3% SE
Ingredients Role Amount (in %, w/w)
Pendimethalin technical
(100% purity basis) Active ingredient 28.00
Sulfentrazone technical
(100% purity basis) Active ingredient 14.00
Metribuzin technical
(100% purity basis) Active ingredient 3.00
EC Part
Dimethylformamide Solvent 5.00
Octyl phenol ethoxylate Emulsifier 10.00
Naphtha Co-solvent 10.00
Castor oil ethoxylate 40 moles Emulsifier 5.00
SC Part
Polyethylene-polypropylene glycol monobutyl ether Wetting agent 1.50
2-Propenoic acid, 2-methyl-, polymer with .alpha.-methyl-.omega.-hydroxypoly(oxy-1,2-ethanediyl) and methyl 2-methyl-2-propenoate graft polymer Dispersing agent 1.75
Tristyrylphenol Ethoxylates Dispersing agent 2.80
Attapulgite clay Suspending agent 0.70
Polydimethyl siloxane Antifoaming agent 0.20
1,2- benzisothiazoline-3-one Preservative/biocide 0.10
1,2-Propylene glycol Anti-freezing agent 4.00
Xanthan gum solution Thickener 0.12
Water Diluent/solvent 13.83
Total 100.00

[00088] Manufacturing process for 100 kg of Pendimethalin 28% + Sulfentrazone 14% + Metribuzin 3% SE (Suspo Emulsion):
Step 1: Prepare a xanthan gum solution 12-18 hours prior to use. Combine 5 kg of water and 0.1 kg of biocide in a mixing vessel. Gradually add 0.12 kg of xanthan gum powder while stirring until fully dissolved.
Step 2: Oil Phase: Combine 10.00 kg of Naphtha and 5.00 kg of dimethylformamide in a separate container. Add 28.00 kg of Pendimethalin technical to this mixture and agitate until fully dissolved. Next, add 10.00 kg of octyl phenol ethoxylate and 5.00 kg of castor oil ethoxylate under continuous stirring to create the oil phase.
Step 3: Aqueous Phase: In an another vessel, add 8.00 kg of water to prepare the aqueous phase.
Step 4: Introduce 1.50 kg of Polyethylene-polypropylene glycol monobutyl ether, 1.75 kg of 2-Propenoic acid, 2-methyl-, polymer with .alpha.-methyl-.omega.-hydroxypoly(oxy-1,2-ethanediyl) and methyl 2-methyl-2-propenoate graft polymer, 2.80 kg of tristyrylphenol ethoxylates, and 0.70 kg of attapulgite clay into the aqueous phase. Homogenize the mixture for 45-60 minutes using a high-shear homogenizer until uniform.
Step 5: Add 14.00 kg of sulfentrazone technical and 3.00 kg of metribuzin technical to the homogenized aqueous mixture to achieve a uniform slurry (Aqueous phase).
Step 6: Gradually add the oil phase to the aqueous phase while stirring continuously for 30 minutes with a homogenizer.
Step 7: Before (Step 6) combining the oil and aqueous phases, add half of the total amount of polydimethylsiloxane (0.10 kg) to the mixture. Then, process the homogenized mixture through three cycles of grinding in a bead mill.
Step 8: After grinding, incorporate the remaining 0.10 kg of polydimethylsiloxane and 4.00 kg of 1,2-propylene glycol before sampling for in-process analysis.
Step 9: Finally, add the xanthan gum solution (5.83 kg) to the mixture and stir until a homogeneous formulation is achieved.
[00089] Storage stability results:
Table 2. - Storage stability of SE Formulation of Example 1
Laboratory storage for 14 days
Parameters Specification (in-house) Initial At 54±2 0C At 0±2 0C
Pendimethalin (% by mass) 26.60 to 29.40 28.41 28.40 28.41
Sulfentrazone (% by mass) 13.30 to 14.70 14.19 14.18 14.19
Metribuzin (% by mass) 2.85 to 3.30 3.10 3.09 3.10
Pendimethalin suspensibility (in % min.) 80 94.45 94.43 94.45
Solfentrazone suspensibility (in % min.) 80 93.36 93.34 93.36
Metribuzin suspesnibility (in % min.) 80 95.43 95.41 95.43
pH range (1% aq. Suspension) 5.0 to 9.0 7.43 7.47 7.43
Pourability 95% min. 98.70 98.50 98.60
Specific gravity 1.1-1.2 1.17 1.17 1.17
Viscosity at spindle no. 62, 20 rpm 350-800 cps 390 395 395
Particle size (micron) D50<3, D90<10 2.4,6.3 2.5,6.5 2.4,6.5
Persistent foam ml (after 1 minute) max. 60 20 25 20
Room temperature storage
Parameters Specification (in house) 1 month 6 months 12 months
Pendimethalin content (% by mass) 26.60 to 29.40 28.41 28.40 28.38
Sulfentrazone content (% by mass) 13.30 to 14.70 14.19 14.19 14.18
Metribuzin content (% by mass) 2.85 to 3.30 3.10 3.09 3.07
Pendimethalin suspensibility (in % min.) 80 94.45 94.43 94.23
Sulfentrazone suspensibility (in % min.) 80 93.36 93.33 93.21
Metribuzin suspesnibility (in % min.) 80 95.43 95.41 95.38
pH range (1% aq. Suspension) 5.0 to 9.0 7.43 7.44 7.47
Pourability 95% min. 98.70 98.68 98.61
Specific gravity 1.1-1.2 1.17 1.17 1.07
Viscosity at spindle no. 62, 20 rpm 350-800 cps 390 395 397
Particle size (micron) D50<3, D90<10 2.4,6.3 2.4,6.3 2.5,6.5
Persistent foam ml (after 1 minute) max. 60 20 20 22

[00090] Example 2: Pendimethalin 30%+Sulfentrazone 12%+Imazethapyr 4% SE (Suspo Emulsion)
Table 3 - SE Formulation of Pendimethalin 30%+Sulfentrazone 12%+Imazethapyr 4%
Ingredients Role Amount
(in %, w/w)
Pendimethalin technical
(100% purity basis) Active ingredient 30.00
Sulfentrazone technical
(100% purity basis) Active ingredient 12.00
Imazethapyr technical
(100% purity basis) Active ingredient 4.00
EC Part
N-Methyl-2-pyrrolidone Solvent 5.00
Naphtha Co-solvent 10.00
Polyoxyethylene sorbitan monooleate Emulsifier 10.00
Tristyrylphenol Ethoxylate Phosphate Ester Emulsifier 5.00
SC Part
Lauryl alcohol ethoxylate Wetting agent 1.50
2-Propenoic acid, 2-methyl-, polymer with .alpha.-methyl-.omega.-hydroxypoly(oxy-1,2-ethanediyl) and methyl 2-methyl-2-propenoate graft copolymer Dispersing agent 1.75
Ethoxylated Polyarylphenol Phosphate Amine Salt Dispersing agent 2.80
Attapulgite clay Suspending agent 0.70
Polydimethyl siloxane Antifoaming agent 0.20
1,2- benzisothiazoline-3-one Preservative/biocide 0.10
Propane-1,2,3-triol Anti-freezing agent 4.00
Xanthan gum solution Thickener 0.12
Water Diluent 12.83
Total 100.00



[00091] Manufacturing process for 100 kg of Pendimethalin 30% + Sulfentrazone 12% + Imazethapyr 4% SE (Suspo Emulsion):
Step 1: Prepare a xanthan gum solution 12-18 hours before use. In a mixing vessel, combine 5 kg of water and 0.1 kg of biocide. Homogenize the mixture, then slowly add 0.12 kg of xanthan gum powder while stirring until fully dissolved.
Step 2: Oil Phase: Combine 10.00 kg of Naphtha and 5.00 kg of N-methyl-2-pyrrolidone in a separate container. Add 30.00 kg of Pendimethalin technical to create a homogeneous mixture. Under continuous stirring, incorporate 10.00 kg of polyoxyethylene sorbitan monooleate and 5.00 kg of tristyrylphenol ethoxylate phosphate ester to complete the oil phase.
Step 3: Aqueous Phase: In another vessel, add 7.00 kg of water to prepare the aqueous phase.
Step 4: To the aqueous phase, add 1.50 kg of Lauryl alcohol ethoxylate, 1.75 kg of 2-Propenoic acid, 2-methyl-, polymer with .alpha.-methyl-.omega.-hydroxypoly(oxy-1,2-ethanediyl) and methyl 2-methyl-2-propenoate graft copolymer, 2.80 kg of ethoxylated polyarylphenol phosphate amine salt, and 0.70 kg of attapulgite clay. Homogenize the mixture for 45-60 minutes using a high-shear homogenizer until uniform.
Step 5: Add 12.00 kg of sulfentrazone technical and 3.00 kg of metribuzin technical to the homogenized mixture to create a uniform slurry.
Step 6: Gradually add the oil phase to the aqueous phase while stirring continuously for 30 minutes with a homogenizer.
Step 7: Before combining the phases in Step 6, add half of the total amount of polydimethylsiloxane (0.10 kg) to the mixture. Process the homogenized mixture through three cycles of grinding in a bead mill.
Step 8: After grinding, add the remaining 0.10 kg of polydimethylsiloxane along with 4.00 kg of propane-1,2,3-triol before sampling for in-process analysis.
Step 9: Finally, incorporate the xanthan gum solution (5.83 kg) into the mixture and stir until a homogeneous formulation is achieved.


[00092] Storage Stability results:
Table 4 - Storage stability of SE formulation of Example 2
Laboratory storage for 14 days
Parameters Specification (in-house) Initial At 54±2 0C At 0±2 0C
Pendimethalin content percent by mass 28.50 to 31.50 30.18 30.17 30.18
Sulfentrazone content percent by mass 11.40 to 12.60 12.14 12.13 12.14
Imazethapyr content percent by mass 3.80 to 4.40 4.12 4.11 4.12
Pendimethalin suspensibility percent min. 80 93.25 93.19 93.25
Sulfentrazone suspensibility percent min. 80 94.14 94.13 94.14
Imazethapyr suspesnibility precent min. 80 96.45 96.43 96.45
pH range (1% aq. Suspension) 5.0 to 9.0 6.80 6.70 6.80
Pourability 95% min. 98.72 98.65 98.72
Specific gravity 1.10-1.20 1.18 1.18 1.18
Viscosity at spindle no. 62, 20 rpm 350-800 cps 423 419 432
Particle size (micron) D50<3, D90<10 2.3,6.81 2.4,6.85 2.3,6.82
Persistent foam ml (after 1 minute) max. 60 20 25 22
Room temperature storage
Parameters Specification (in house) 1 month 6 months 12 months
Pendimethalin content percent by mass 28.50 to 31.50 30.18 30.18 30.12
Sulfentrazone content percent by mass 11.40 to 12.60 12.14 12.13 12.11
Imazethapyr content percent by mass 3.80 to 4.40 4.12 4.11 4.09
Pendimethalin suspensibility percent min. 80 93.25 93.24 93.19
Imazethapyr suspensibility percent min. 80 94.14 94.01 93.89
Sulfentrazone suspesnibility precent min. 80 96.45 96.39 96.12
pH range (1% aq. Suspension) 5.0 to 9.0 6.80 5.42 5.45
Pourability 95% min. 98.72 98.65 98.59
Specific gravity 1.10-1.20 1.18 1.18 1.18
Viscosity at spindle no. 62, 20 rpm 350-800 cps 423 425 432
Particle size (micron) D50<3, D90<10 2.3,6.81 5.85 6.75
Persistent foam ml (after 1 minute) max. 60 20 20 20

[00093] Example 3: Pendimethalin 30%+Sulfentrazone 12%+Chlorimuron-ethyl 0.36% SE (Suspo Emulsion)
Table 5 - SE Formulation of Pendimethalin 30%+Sulfentrazone 12%+Chlorimuron-ethyl 0.36%
Ingredients Function Amount
(in w/w%)
Pendimethalin technical
(100% purity basis) Active ingredient 30.00
Sulfentrazone technical
(100% purity basis) Active ingredient 12.00
Chlorimuron-ethyl technical
(100% purity basis) Active ingredient 0.36
EC Part
Cyclohexanone Solvent 5.00
Naphtha Co-solvent 10.00
Nonyl Phenol Ethoxylate Emulsifier 10.00
Isodecyl Alcohol Ethoxylate Emulsifier 5.00
SC Part
Sodium Dioctylsulphosuccinate Wetting agent 1.50
Acrylate-methylstyrene-styrene polymer ammonium salt Dispersing agent 1.96
Ethoxylated Tristyrylphenol Phosphate Potassium Salt Dispersing agent 2.81
Kaoline clay Suspending agent 0.70
Polydimethyl siloxane Antifoaming agent 0.20
1,2- benzisothiazoline-3-one Preservative 0.10
Mono Ethylene Glycol Anti freezing agent 4.00
Xanthan gum solution Thickener 0.12
Water Diluent 16.25
Total 100.00

[00094] Manufacturing process for 100 kg of Pendimethalin 30% + Sulfentrazone 12% + Chlorimuron-ethyl 0.36% SE (Suspo Emulsion):
Step 1: Prepare a xanthan gum solution 12-18 hours prior to use. In a mixing vessel, combine 5 kg of water and 0.1 kg of biocide. Homogenize the mixture, then slowly add 0.12 kg of xanthan gum powder while stirring until fully dissolved.
Step 2: Oil Phase: Combine 10.00 kg of Naphtha, and Cyclohexanone. Add 30.00 kg of Pendimethalin technical and agitate the mixture until completely dissolved. Under continuous stirring, incorporate 10.00 kg of nonyl phenol ethoxylate and 5.00 kg of isodecyl alcohol ethoxylate to complete the oil phase.
Step 3: Aqueous phase: In another vessel, add 10.00 kg of water to prepare the aqueous phase.
Step 4: To the aqueous phase, add 1.50 kg of sodium dioctylsulphosuccinate, 1.96 kg of Acrylate-methylstyrene-styrene polymer ammonium salt, 2.81 kg of ethoxylated tristyrylphenol phosphate potassium salt, and 0.70 kg of kaolin clay. Homogenize the mixture for 45-60 minutes using a high-shear homogenizer until uniform.
Step 5: Introduce 12.00 kg of sulfentrazone and 0.36 kg of chlorimuron ethyl to the homogenized mixture to achieve a uniform slurry (Aqueous phase).
Step 6: Gradually add the oil phase to the aqueous phase while stirring continuously for 30 minutes using a homogenizer.
Step 7: Before step no. 6, half a quantity of polydimethylsiloxane (0.10 kg) was added, and then the homogenized mixture was subjected to three cycles of grinding in a bead mill.
Step 8: After grinding, add the remaining 0.10 kg of polydimethylsiloxane along with 4.00 kg of monoethylene glycol before sampling for in-process analysis.
Step 9: Finally, add the xanthan gum solution (6.25 kg) to the mixture above and stir until a homogeneous formulation is achieved.
[00095] Storage Stability Results:
Table 6 - Storage stability of SE Formulation of Example 3
Laboratory storage for 14 days
Parameters Specification (in-house) Initial At 54±2 0C At 0±2 0C
Pendimethalin content percent by mass 28.50 to 31.50 30.17 30.16 30.17
Sulfentrazone content percent by mass 11.40 to 12.60 12.15 12.14 12.15
Chlorimuron-ethyl content percent by mass 0.34 to 0.40 0.38 0.37 0.38
Pendimethalin suspensibility percent min. 80 92.26 92.20 92.24
Sulfentrazone suspensibility percent min. 80 94.24 94.19 94.23
Chlorimuron-ethyl suspesnibility precent min. 80 96.87 96.82 96.86
pH range (1% aq. Suspension) 5.0 to 9.0 6.87 6.89 6.87
Pourability 95% min. 98.76 98.66 98.71
Specific gravity 1.10-1.20 1.15 1.15 1.15
Viscosity at spindle no. 62, 20 rpm 350-800 cps 419 422 420
Particle size (micron) D50<3, D90<10 2.3,6.71 2.4,6.82 2.3,6.79
Persistent foam ml (after 1 minute) max. 60 22 25 22
Room temperature storage
Parameters Specification (in-house) 1 month 6 months 12 months
Pendimethalin content percent by mass 28.50 to 31.50 30.17 30.17 30.15
Sulfentrazone content percent by mass 11.40 to 12.60 12.15 12.13 12.13
Chlorimuron-ethyl content percent by mass 0.34 to 0.40 0.38 0.38 0.37
Pendimethalin suspensibility percent min. 80 92.26 93.21 93.15
Sulfentrazone suspensibility percent min. 80 94.24 94.19 93.91
Chlorimuron-ethyl suspesnibility precent min. 80 96.87 96.79 96.71
pH range (1% aq. Suspension) 5.0 to 9.0 6.87 6.89 6.90
Pourability 95% min. 98.76 98.71 98.65
Specific gravity 1.10-1.20 1.15 1.18 1.18
Viscosity at spindle no. 62, 20 rpm 350-800 cps 419 426 433
Particle size (micron) D50<3, D90<10 2.3,6.71 2.4,6.73 2.4,6.74
Persistent foam ml (after 1 minute) max. 60 22 25 27

[00096] Example 4: Pendimethalin 30%+Sulfentrazone 8%+Metribuzin 10% ZC
Table 7 - ZC Formulation of Pendimethalin 30%+Sulfentrazone 8%+Metribuzin 10%
Chemical composition Role Amount
(in w/w%)
Pendimethalin technical
(100% purity basis) Active ingredient 30.00
Sulfentrazone technical
(100% purity basis) Active ingredient 8.00
Metribuzin technical
(100% purity basis) Active ingredient 10.00
Sodium Isopropyl Naphthalene Sulfonate Wetting agent 2.00
Octyl phenyl polyglycol ether Dispersing agent 2.50
Alkyl napthalene sulfonate condensate Dispersing agent 0.50
Polymethylene polyphenylene isocyanate Wall forming material 0.50
Diethylenetriamine Wall forming material 0.25
Tributyl phenyl polyglycol ether Suspending agent 1.50
Polydimethylsiloxane Antifoaming agent 0.30
Sulphuric acid Buffering agent 0.50
1,2-benzisothiazolin-3(2H)-one Preservative/biocide 0.20
Mono ethylene glycol Antifreezing agent 5.00
Xanthan gum solution Thickener 0.15
Water Solvent/diluent 38.60
Total 100.00

[00097] Example 4: Manufacturing process for 100 kg of Pendimethalin 30% + Sulfentrazone 8% + Metribuzin 10% ZC:
Part A: Xanthan Gum Solution Preparation
Step 1: Prepare a xanthan gum solution 12-18 hours prior to use. In a mixing vessel, combine 7.15 kg of water and 0.2 kg of biocide. Homogenize the mixture, then slowly add 0.12 kg of xanthan gum powder while stirring until fully dissolved.
Part B: Preparation of CS (Capsule Suspension) formulation
Step 2: Aqueous Phase - In a stainless-steel vessel equipped with a high-speed stirrer, add water. Under agitation, incorporate 1.00 kg sodium isopropyl naphthalene sulfonate, 1.25 kg Octyl phenyl polyglycol ether, 0.50 kg alkyl naphthalene sulfonate condensate. Add 50% of Polydimethylsiloxane to minimize foam generation.
Step 3: Organic Phase - In a second stainless-steel reactor, melt 30.00 kg of Pendimethalin technical. Add 0.50 kg of Polymethylene polyphenylene isocyanate and mix thoroughly to create a uniform organic phase.
Step 4: The aqueous phase was taken in a high shear disperser and gradually add the organic solution to the aqueous phase under gravity at a controlled rate to achieve the desired particle size. Stir for 30 minutes to obtain a blend. Heat the blend to approximately 50°C, stirring at slow RPM for 3-4 hours until the polymerization reaction was completed.
Step 5: Add 0.25 kg of Diethylenetriamine to the mixture to consume residual wall-forming material. Continue stirring for 1 hour. If necessary, add half of the remaining antifoam to reduce foaming caused by CO2 during the reaction.
Step 6: Once polymerization was complete, increase stirring speed to about 1000-1200 rpm. De-gas the above solution under slight vacuum for 30 minutes to remove CO2. 3.75 kg Xanthan gum solution and 2.50 kg Mono ethylene glycol was added to the above de-gas mixture and stirred for another 45 minutes. Adjust the pH using 0.50 kg of Sulphuric acid.
Part C: Preparation of SC (Suspension Concentrate) formulation
Step 7: The required quantity of water was taken into a vessel equipped with a bulk agitator and a high-shear homogenizer. Mono ethylene glycol (2.50 kg) was added and stirred to obtain a mixture. Add the remaining Polydimethylsiloxane (ensure that it is well dispersed), Sodium Isopropyl Naphthalene Sulfonate (1.00 kg), and Octyl phenyl polyglycol ether (1.25 kg) to the above mixture until a uniform mixture was obtained.
Step 8: Sulfentrazone (8.00 kg) and Metribuzin (10.00 kg) were added to the above uniform mixture and continued to stir till a homogenized mixture was obtained. Milled the homogenized mixture via a Colloid mill, and subsequently through a Dyno mill to obtain a milled mixture of particle size of less than 10 microns.
Step 9: The remaining Polydimethyl siloxane (if any) was added to the above-milled mixture in the vessel equipped with a bulk agitator till a uniform mixture was obtained. 2% Xanthan gum solution was added to the above uniform mixture and stirred till a homogeneous SC formulation was obtained.
Part D: Preparation of ZC Formulation
Step 10: Charge the 15-18 kg of SC formulation into a vessel equipped with a bulk agitator and start agitation. Add the above-milled mixture into the SC formulation under stirring. Add the xantham gum solution (3.75 kg) into it and continue agitation until the final homogeneous ZC formulation of viscosity of around 600-800 m cPs was obtained.

[00098] Storage Stability Results:
Table 8 - Storage stability of Formulation of Example 4
Laboratory storage stability study for 14 days
Parameters Specification (in-house) Initial At 54±2 0C At 0±2 0C
Pendimethalin content percent by mass 28.50 to 31.50 30.51 30.50 30.51
Sulfentrazone content percent by mass 7.60 to 8.80 8.19 8.18 8.19
Metribuzin content percent by mass 9.50 to 10.50 10.22 10.21 10.22
Pendimethalin suspensibility percent min. 80 91.89 91.85 91.89
Sulfentrazone suspensibility percent min. 80 92.45 92.44 92.45
Metribuzin suspesnibility precent min. 80 94.72 94.71 94.72
pH range (1% aq. Suspension) 5 to 9 7.40 7.41 7.40
Pourability 95% min. 97.51 97.42 97.51
Specific gravity 1.15-1.20 1.18 1.18 1.18
Viscosity at spindle no. 62, 20 rpm 250-800 cps 320 328 322
Particle size (micron) D50<7, D90<15 6.2,11 6.3,12 6.2,11
Persistent foam ml (after 1 minute) max. 60 Nil Nil Nil
Room temperature storage stability study
Parameters Specification (in house) 1 month 6 month 12 month
Pendimethalin content percent by mass 28.50 to 31.50 30.51 30.50 30.48
Sulfentrazone content percent by mass 7.60 to 8.80 8.19 8.19 8.18
Metribuzin content percent by mass 9.50 to 10.50 10.22 10.21 10.19
Pendimethalin suspensibility percent min. 80 91.89 91.85 91.81
Sulfentrazone suspensibility percent min. 80 92.45 92.43 92.39
Metribuzin suspesnibility precent min. 80 94.72 94.70 94.68
pH range (1% aq. Suspension) 5 to 9 7.40 7.41 7.41
Pourability 95% min. 97.51 97.38 97.35
Specific gravity 1.15-1.20 1.18 1.18 1.18
Viscosity at spindle no. 62, 20 rpm 250-800 cps 320 325 332
Particle size (micron) D50<7, D90<15 6.2,11 6.3, 11.7 6.5, 11.8
Persistent foam ml (after 1 minute) max. 60 Nil Nil Nil

[00099] BIO-EFFICACY:
Bio-efficacy (Weed control %): Weed counts were recorded at 15 and 30 DAA (Days after Application by using (a 50 cm x 50 cm) quadrant by randomly putting at four spots per plot. The weed control (%) was calculated by using the given formula.

The weed control (as observed value) is used in Colby's formula to calculate the expected weed control (%) and synergism.
Synergism: A synergistic effect exists wherever the action of a combination of active ingredients 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 pesticidal 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 or three active components can be calculated as follows:



[000100] Phytotoxicity: The observations on crop safety i.e. phytotoxicity or adverse effect of treatments were recorded for symptoms visible. All the visual 42 phytotoxicity symptoms like plant yellowing, leaf scorching, bleaching, necrosis, stunting, crinkling, epinasty, and hyponasty were recorded based on the entire plot in comparison with the untreated control (UTC) plot. Each individual visual symptoms were recorded on the basis severity of the injury i.e. from 0 to 100%.
[000101] Pod count: Count the number of pods (filled with beans/grain) per plant. Record the observations from 20 plants per plot at the time of harvest.
[000102] FIELD BIO-EFFICACY STUDIES:
[000103] The field experiments were carried out to study the bio-efficacy, phytotoxicity, and synergism.
[000104] Bio-efficacy against mixed weed flora in soybeans (for Example 1)
Crops: Soybean
Location: Dhar, Madhya Pradesh
Number of Treatments: Nine including untreated control (UTC).
Plot size: 40sq.m.
Application Time: 1 DAS (One day after sowing)
Spray Volume: 400-liter water per hectare
Application Equipment: Manually operated knapsack sprayer fitted with flat fat nozzle boom.
Agronomic practices: All the required agronomic practices followed except herbicidal application.
Table 9: Treatment details
S.No. Treatment details Rate (gai/h)
T1 pendimethalin 28%+sulfentrazone 14%+metribuzin 3% SE 700+350+75
T2 pendimethalin 28%+sulfentrazone 14% SE 700+350
T3 pendimethalin 28%+metribuzin 3% SE 700+75
T4 sulfentrazone 28%+metribuzin 6% SC 350+75
T5 Pendimethalin 30%+Sulfentrazone 10%+Oxyfluorfen 1.7% SE 900+300+51
T6 pendimethalin 30% EC 700
T7 sulfentrazone 48% SC 350
T8 metribuzin 70% WP 75
T9 Untreated control (UTC) -
T1 represents the formulations of the present disclosure and T2 to T5 represents the conventionally known binary and ternary combinations. SE - Suspo Emulsion, SC - Suspension Concentrate, WP - Wettable Powder, EC - Emulsifiable Concentrate and gai/h represents gram active ingredients (technical) per hectare.

Table 10 - Weed flora and their density observed in trial plots
Weed species Average number of weeds / 0.25 sq.m.
At 15 DAA At 30 DAA
Grassy weeds
Echinochloa colonum 13.7 21.9
Eragrostis minor 10.5 16.3
Broad Leaf weeds
Commelina communis 24.6 28.5
Commelina benghalensis 8.4 11.2
Acalypha indica 6.4 7.3
Euphorbia geniculata 5.3 5.8
Sedges
Cyperus rotundus 4.8 5.1

Table 11: Bio-efficacy against mixed weed flora in soybean
S. No. Weed control (%) at
15 DAA 30 DAA
Observed Expected Colby's ratio Observed Expected Colby's ratio Synergism (Y/N)
T1 100.00 89.92 1.11 99.32 82.85 1.20 Y
T2 80.53 78.66 1.02 68.57 70.66 0.97 N
T3 81.82 80.38 1.02 70.15 72.89 0.96 N
T4 77.55 75.74 1.02 61.48 63.05 0.98 N
T5 98.86 - - 90.34 - - -
T6 58.45 - - 53.60 - - -
T7 48.63 - - 36.76 - - -
T8 52.78 - - 41.57 - - -
T9 0.00 - - 0.00 - - -

DAA represents the Days After the Application.
Observations: As can be seen in Table 11 above, the formulation of the present disclosure (T1- pendimethalin 28%+sulfentrazone 14%+metribuzin 3% SE) provides excellent synergistic control of all species of weeds (grass, broadleaf, and sedges) in soybean. It provides acceptable control (>99%) up to 30 DAA.

Table 12: Phyto-toxicity and pods count
S.No. Phytotoxicity (%) Number of Pods/plants Increase(%) in pods over T9
Yellowing (%) Stunting (%)
10 DAS 20 DAS 30 DAS 10 DAS 20 DAS 30 DAS
T1 10.0 0.0 0.0 20.0 10.0 0.0 56.7 59.7
T2 10.0 0.0 0.0 20.0 10.0 0.0 46.5 31.0
T3 0.0 0.0 0.0 10.0 0.0 0.0 49.8 40.3
T4 10.0 0.0 0.0 20.0 10.0 0.0 45.9 29.3
T5 10.0 0.0 0.0 30.0 20.0 10.0 52.5 47.9
T6 0.0 0.0 0.0 0.0 0.0 0.0 43.2 21.7
T7 10.0 0.0 0.0 20.0 10.0 0.0 39.5 11.3
T8 0.0 0.0 0.0 10.0 0.0 0.0 41.2 16.1
T9 0.0 0.0 0.0 0.0 0.0 0.0 35.5 0.0

As can be seen in Table 12 above, the formulation of the present disclosure (T1) was found to be safe for the soybean crop and produces a higher number of pods per plant when compared to individual active agent formulations and the conventionally known binary and ternary combinations.
[000105] Bio-efficacy against mixed weed flora in soybeans
Crops: Soybean
Location: Amarawati, Maharashtra
Number of Treatments: Eighteen including untreated control (UTC).
Plot size: 32sq.m.
Application Time: 1 DAS (One day after sowing)
Spray Volume: 400-liter water per hectare
Application Equipment: Manually operated knapsack sprayer fitted with flat fat nozzle boom.
Agronomic practices: All the required agronomic practices followed except herbicidal application.
Observations: As per Example 1.
Table 13: Treatment details
S.No. Treatment details Rate (gai/h)
T1 pendimethalin 20%+sulfentrazone 10%+metribuzin 5% SE 500+250+125
T2 pendimethalin 30%+sulfentrazone 8%+metribuzin 10% ZC 600+160+200
T3 pendimethalin 30%+sulfentrazone 12%+chlorimuron ethyl 0.36% SE 600+240+7.2
T4 pendimethalin 30%+sulfentrazone 12%+imazethapyr 4% SE 600+240+80
T5 pendimethalin 30%+sulfentrazone 12% EC 750+300
T6 pendimethalin 30%+imazethapyr 2% EC 750+50
T7 sulfentrazone 12.5%+metribuzin 12.5% SC 250+250
T8 sulfentrazone 28%+clomazone 30% WP 350+375
T9 Pendimethalin 30% EC 500
T10 Pendimethalin 30% EC 600
T11 sulfentrazone 48% SC 160
T12 sulfentrazone 48% SC 240
T13 sulfentrazone 48% SC 250
T14 metribuzin 70% WP 125
T15 metribuzin 70% WP 200
T16 chlorimuron ethyl 25% WP 7.2
T17 imazethapyr 10% SL 80
T18 Untreated control (UTC) -
T1-T4 represents the formulations of the present disclosure and T5 to T8 represents the conventionally known binary combinations. SE - Suspo Emulsion, ZC - Zeon concentrate, SC - Suspension Concentrate, WP - Wettable Powder, EC - Emulsifiable Concentrate and gai/h represents gram active ingredients (technical) per hectare.

Table 14 - Weed flora and their density observed in trial plots
Weed species Average number of weeds / 0.25 sq.m.
At 15 DAA At 30 DAA
Grassy weeds
Echinochloa colonum 8.8 14.8
Digitaria spp. 7.6 18.6
Broad Leaf weeds
Commelina communis 10.4 15.2
Digera arvensis 6.2 8.6
Amaranthus spp. 3.8 5.2
Sedges
Cyperus rotundus 1.6 2.2

Table 15: Bio-efficacy against mixed weed flora in soybean
Treatment number Weed control (%)
15 DAA 30 DAA
Observed Expected Colby's ratio Observed Expected Colby's ratio Synergism (Y/N)
T1 98.6 88.60 1.11 94.8 77.88 1.22 Y
T2 100.0 90.65 1.10 98.2 84.15 1.17 Y
T3 97.6 87.69 1.11 94.2 77.10 1.22 Y
T4 98.4 88.48 1.11 96.4 79.89 1.21 Y
T5 90.2 - - 78.8 - -
T6 87.6 - - 70.4 - -
T7 75.8 - - 64.4 - -
T8 88.6 - - 66.6 - -
T9 44.6 - - 31.2 - -
T10 52.6 - - 40.6 - -
T11 36.8 - - 32.6 - -
T12 51.2 - - 42.8 - -
T13 52.8 - - 43.6 - -
T14 56.4 - - 43.0 - -
T15 68.8 - - 60.4 - -
T16 46.8 - - 32.6 - -
T17 50.2 - - 40.8 - -
T18 0.0 - - 0.0 - -

DAA represents the Days After the Application.
Observations: As can be seen in the Table 15 above, the formulations of the present disclosure, T1-T4 provide excellent synergistic control of all species of weeds (grass, broadleaf, and sedges) in soybeans. It provides acceptable control (>99%) up to 30 DAA.
[000106] The aforesaid efficacy studies establish that the compositions/ formulations of the present disclosure afford several-fold technical advancement when compared with the individual active compositions/formulations and the conventionally known binary combinations, as well as, the conventional SE formulation comprising Pendimethalin 30% w/w, Sulfentrazone 10% w/w, and Oxyfluorfen 1.7% w/w. Accordingly, it could be concluded that compositions/formulations of the present disclosure afford improvement in controlling weeds growing amongst crop plants.

ADVANTAGES
[000107] The present disclosure provides a composition that may overcome the limitations associated with conventional herbicidal compositions.
[000108] The present disclosure provides a composition that aids in controlling a wide array of weeds that grow among crop plants.
[000109] The present disclosure provides a composition that exhibits synergistic activity/functional reciprocity.
[000110] The present disclosure provides a composition that is devoid of any phytotoxicity.
[000111] The present disclosure provides a stable composition.
[000112] The present disclosure provides a composition that is easy to prepare and economical.
, Claims:1. A herbicidal composition comprising:
pendimethalin in an amount ranging from 20% to 32% w/w;
sulfentrazone in an amount ranging from 8% to 15% w/w;
one herbicide selected from: metribuzin, chlorimuron ethyl, and imazethapyr, said one herbicide being in an amount ranging from 0.2% to 12% w/w; and
one or more agrochemically acceptable excipients.
2. The composition as claimed in claim 1, wherein the composition comprises:
pendimethalin in an amount ranging from 20% to 32% w/w;
sulfentrazone in an amount ranging from 8% to 15% w/w;
metribuzin in an amount ranging from 0.2% to 12% w/w; and
one or more agrochemically acceptable excipients.
3. The composition as claimed in claim 1, wherein the composition comprises:
pendimethalin in an amount ranging from 20% to 32% w/w;
sulfentrazone in an amount ranging from 8% to 15% w/w;
chlorimuron ethyl in an amount ranging from 0.2% to 12% w/w; and
one or more agrochemically acceptable excipients.
4. The composition as claimed in claim 1, wherein the composition comprises:
pendimethalin in an amount ranging from 20% to 32% w/w;
sulfentrazone in an amount ranging from 8% to 15% w/w;
imazethapyr in an amount ranging from 0.2% to 12% w/w; and
one or more agrochemically acceptable excipients.
5. The composition as claimed in any of the preceding claims, wherein the one or more agrochemically acceptable excipient is selected from solvent, wetting agent, emulsifier, dispersing agent, suspending agent, anti-freezing agent, anti-foaming agent, preservative, thickener, stabilizer, buffering agent, solid carrier, humectant, disintegrating agents, fillers, colorants, fertilizers, surfactants, tackifiers, and all forming material.
6. The composition as claimed in any of the preceding claims, wherein the composition is formulated into any of: Capsule suspension (CS), Dispersible concentrate (DC), Emulsifiable concentrate (EC), Emulsion, water in oil (EO) emulsion, oil in water (EW) emulsion, Jambo balls or bags (bags in water soluble pouch), Micro-emulsion (ME), Oil dispersion (OD), Oil miscible flowable concentrate (oil miscible suspension (OF), Oil miscible liquid (OL), Suspension concentrate (SC), Suspo-emulsion (SE), Soluble concentrate (SL), Water dispersible granule (WG or WDG), Water soluble granule (SG), Water soluble powder (SP), Wettable powder (WP), Zeon concentrate (ZC), a mixed formulation of CS and SE (ZE), and a mixed formulation of CS and EW (ZW).
7. The composition as claimed in any of the preceding claims, wherein the composition is formulated into any of: Suspo-emulsion (SE) and Zeon concentrate (ZC).
8. A method for controlling unwanted vegetative herbs by application of an effective amount of a herbicidal composition comprising: pendimethalin in an amount ranging from 20% to 32% w/w; sulfentrazone in an amount ranging from 8% to 15% w/w; one herbicide selected from: metribuzin, chlorimuron ethyl, and imazethapyr, said one herbicide being in an amount ranging from 0.2% to 12% w/w; and one or more agrochemically acceptable excipients.

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