Synergistic ternary herbicidal compositions of thiencarbazone-methyl

Abstract

The present invention provides a synergistic ternary herbicidal compositions comprising Thiencarbazone-methyl and a second herbicide selected from HPPD class of herbicides and a third herbicide which is selected from Halosulfuron-methyl or Nicosulfuron, formulation thereof and to a method of controlling undesired vegetation in economically important crops.

Description

[0001] SYNERGISTIC TERNARY HERBICIDAL COMPOSITIONS OF THIENCARBAZONE-METHYL

[0002] FIELD OF THE INVENTION

[0003] The present invention relates to a synergistic ternary herbicidal compositions comprising Thiencarbazone-methyl and a second herbicide selected from HPPD class of herbicides and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron, formulation thereof and to a method of controlling undesired vegetation in economically important crops.

[0004] BACKGROUND OF THE INVENTION

[0005] Weeds and other unwanted vegetation inhibiting crop growth is a constantly recurring problem in agriculture. In economically important crops, higher crop efficiency is achieved by controlling these unwanted vegetations. Developing economically efficient and ecologically safe herbicidal composition and methods are an continuous requirement to broaden spectrum of control, to minimize the doses of chemicals used, to retard herbicide resistant varieties of weeds and to reduce the cost of the treatment through synergistic effect which is most sought properties of a combination products and highly unpredictable since the behaviour of each single herbicide in the combination is often affected by the presence of the other components and the activity of the mixture may also vary considerably depending on chemical character, plant species, growth stage, and environmental conditions.

[0006] Therefore, there exist a need in the art to develop a novel herbicidal compositions, which are stable, synergistic, broad spectrum, environmentally safe and effective in control of a wide spectrum of weed flora in crops. The herbicidal compositions must show a broader scope of activity to avoid or to prevent the development of resistant varieties of weeds to the active ingredients or to the mixtures of known active ingredients used by farmer while minimising the doses of chemicals sprayed in the agriculture fields.

[0007] OBJECT OF THE INVENTION

[0008] 1. Foremost object of the present invention is to invent a synergistic ternary herbicidal compositions which are broad spectrum.

[0009] 2. Another object of the present invention is to invent a synergistic ternary herbicidal compositions which provides better weed control with lower overall chemical use.3. One another object of the present invention is to invent a synergistic ternary herbicidal compositions which able to prevent the development of resistant varieties of weeds to the active ingredients.

[0010] SUMMARY OF THE INVENTION

[0011] Accordingly, the present invention provides a synergistic ternary herbicidal compositions comprising Thiencarbazone-methyl and a second herbicide selected from HPPD class of herbicides and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron and agriculturally acceptable excipient(s).

[0012] In one aspect, the present invention provides a synergistic ternary herbicidal composition comprising Thiencarbazone-methyl and a second herbicide selected from HPPD class of herbicides which includes Tembotrione, Topramezone, Sulcotrione or Mesotrione and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron and agriculturally acceptable excipient(s).

[0013] In one aspect, the synergistic ternary herbicidal compositions of the present invention may comprise Thiencarbazone-methyl, Tembotrione, Topramezone, Sulcotrione, Mesotrione, Halosulfuron-methyl or Nicosulfuron in the form of agrochemically acceptable salts, esters, derivatives or polymorphs or any other suitable available form.

[0014] In one other aspect, the synergistic ternary herbicidal compositions of the present invention comprise Thiencarbazone-methyl, a second herbicide Tembotrione, and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron and agriculturally acceptable excipient(s).

[0015] In one other aspect, the synergistic ternary herbicidal compositions of the present invention comprise Thiencarbazone-methyl, a second herbicide Topramezone, and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron and agriculturally acceptable excipient(s).

[0016] In one other aspect, the synergistic ternary herbicidal compositions of the present invention comprise Thiencarbazone-methyl, a second herbicide Sulcotrione, and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron and agriculturally acceptable excipient(s).In one other aspect, the synergistic ternary herbicidal compositions of the present invention comprise Thiencarbazone-methyl, a second herbicide Mesotrione and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron and agriculturally acceptable excipient(s).

[0017] In one aspect, the synergistic ternary herbicidal compositions of the present invention comprise Thiencarbazone-methyl in an amount in the range from 0.1-90% vil'W, a second herbicide selected from HPPD class of herbicides which includes Tembotrione, Topramezone, Sulcotrione or Mesotrione in an amount in the range from 0.1-90% w / w; and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron in an amount in the range from 0.1-90% w / w and agriculturally acceptable excipient(s).

[0018] In one aspect, the synergistic ternary herbicidal compositions of the present invention comprise Thiencarbazone-methyl in an amount in the range from 0.1-50% w / w; a second herbicide selected from HPPD class of herbicides which includes Tembotrione, Topramezone, Sulcotrione or Mesotrione in an amount in the range from 0.1-50% w / w; and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron in an amount in the range from 0.1-50% w / w and agriculturally acceptable excipient(s).

[0019] In one aspect, the synergistic ternary herbicidal compositions of the present invention comprise Thiencarbazone-methyl in an amount in the range from 0.3-6% w / w; a second herbicide selected from HPPD class of herbicides which includes Tembotrione, Topramezone, Sulcotrione or Mesotrione in an amount in the range from 1-50% w / w; and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron in an amount in the range from 1-17% w / w and agriculturally acceptable excipient(s).

[0020] In one another aspect, the synergistic ternary herbicidal composition of the present invention comprises Thiencarbazone-methyl in an amount in the range from 0.6-2.8% w / w; a second herbicide Tembotrione in an amount in the range from 18-26.8% vil'W, a third herbicide Halosulfuron-methyl in an amount in the range from 10-13% w / w; and agriculturally acceptable excipient(s).

[0021] In one another aspect, the synergistic ternary herbicidal composition of the present invention comprises Thiencarbazone-methyl in an amount in the range from 2-3% w / w; a second herbicide Tembotrione in an amount in the range from 14-22% vil'W, a third herbicideNicosulfuron in an amount in the range from 6-11% w / w; and agriculturally acceptable excipient(s).

[0022] In one another aspect, the synergistic ternary herbicidal composition of the present invention comprises Thiencarbazone-methyl in an amount in the range from 1-3% w / w; a second herbicide Topram ezone in an amount in the range from 4-8% w / w; a third herbicide Halosulfuron-methyl in an amount in the range from 12-13.5% w / w; and agriculturally acceptable excipient(s).

[0023] In one another aspect, the synergistic ternary herbicidal composition of the present invention comprises Thiencarbazone-methyl in an amount in the range from 2-3% w / w; a second herbicide Topram ezone in an amount in the range from 4-6% w / w; a third herbicide Nicosulfuron in an amount in the range from 6-12% w / w; and agriculturally acceptable excipient(s).

[0024] In one another aspect, the synergistic ternary herbicidal composition of the present invention comprises Thiencarbazone-methyl in an amount in the range from 0.7-1.2% w / w; a second herbicide Sulcotrione in an amount in the range from 20-35% w / w; a third herbicide Halosulfuron-methyl in an amount in the range from 4-6% w / w; and agriculturally acceptable excipient(s).

[0025] In one another aspect, the synergistic ternary herbicidal composition of the present invention comprises Thiencarbazone-methyl in an amount in the range from 1-2% w / w; a second herbicide Sulcotrione in an amount in the range from 35-45% w / w; a third herbicide Nicosulfuron in an amount in the range from 4-6% w / w; and agriculturally acceptable excipient(s).

[0026] In one another aspect, the synergistic ternary herbicidal composition of the present invention comprises Thiencarbazone-methyl in an amount in the range from 0.5- 1.5% w / w; a second herbicide Mesotrione in an amount in the range from 20-30% vil'W, a third herbicide Halosulfuron-methyl in an amount in the range from 4-6.5% w / w; and agriculturally acceptable excipient(s).In one another aspect, the synergistic ternary herbicidal composition of the present invention comprises Thiencarbazone-methyl in an amount in the range from 1-1.4% w / w; a second herbicide Mesotrione in an amount in the range from 7.5-10% vil'W, a third herbicide Nicosulfuron in an amount in the range from 4-5% w / w; and agriculturally acceptable excipient(s).

[0027] In another aspect, the synergistic ternary herbicidal compositions of the present invention is formulated as Capsule suspension (CS), Dispersible concentrate (DC), Dustable powder (DP), Dry flowable (DF), Emulsifiable concentrate (EC), Emulsifiable granule (EG), Emulsion water-in-oil (EO), Emulsifiable powder (EP), Emulsion oil-in-water (EW), Granules (GR), Micro-emulsion (ME), Oil -dispersion (OD), Oil miscible flowable concentrate (OF), Oil miscible liquid (OL), Oil dispersible powder (OP), Suspension concentrate (SC), Suspension concentrate for direct application (SD), Suspo-emulsion (SE), Water soluble granule (SG), Soluble concentrate (SL), Spreading oil (SO), Water soluble powder (SP), Ultra-low volume (ULV) suspension, Ultra-low volume (ULV) liquid, Water dispersible granules (WDG / WG), Wettable powder (WP), a mixed formulation of CS and SC (ZC) or a mixed formulation of CS and SE (ZE), a mixed formulation of CS and EW (ZW) or any other formulation suitable for combinations.

[0028] In another aspect, the synergistic ternary herbicidal compositions of the present invention comprises one or more agriculturally acceptable excipient selected from the group comprising of dispersing agent(s), wetting agent(s), dispersing cum wetting agent(s), defoaming agent(s) / defoamer(s) / antifoaming agent(s) / antifoamer(s), anti-caking agent(s), emulsifier(s), safener(s), filler(s), or a combination thereof and other excipients as will be required in a particular type of formulation.

[0029] In another aspect, the compositions of the present invention comprise;

[0030] the dispersing agent, is selected from the group comprising sodium salt of naphthalene sulfonate condensate, sodium polycarboxylate, kraft lignin polymer, alkyl polyethoxyethanol phosphate ester, proprietary blends of polycarboxylate, polymethyl methacrylate-polyethylene glycol graft copolymer, ethoxylated tri styrylphenol, tri styrylphenol phosphate, acrylate copolymer liquid dispersant, condensed methyl naphthalene sulfonate sodium salt, acrylate copolymer grafted with PEG, polyoxy ethylene alkyl aryl phosphate amine salt, polycarboxylate dispersant, modified styrene acrylic polymeric dispersant, sodiumlignosulphonate, modified sodium lignosulphonate or a combination thereof, and present in an amount in the range from 0.1 to 20% w / w;

[0031] the wetting agent, is selected from the group comprising sodium isopropyl naphthalene sulfonate, sodium alkyl naphthalene sulfonate blend, polyoxyethylene alkyl ether, Adsee 2610 (non-ionic proprietary blend of supplier), polyalkylene oxide block copolymer, ethoxylated tristyrylphenol, sodium butyl naphthalene sulfonate, alkylaryl sulfonate, sodium alkyl dibutyl naphthalene sulfonate, dicotyl sulfosuccinate, sodium dioctyl sulphosuccinate, or a combination thereof and present in an amount in the range from 0.1-10% w / w;

[0032] the dispersing cum wetting agent, is selected from the group comprising proprietary blend of phosphate ester and sodium naphthalene sulphate formaldehyde condensate, alkylated vinyl pyrrolidone, dioctyl sulfosuccinate, modified styrene acrylic polymeric dispersant or a combination thereof and present in an amount in the range from 1-10% w / w;

[0033] the antifoaming / / defoaming agent, is selected from the group comprising polydimethylsiloxane emulsion, powdered silicone antifoam, silicon antifoam emulsion, silicon emulsion, polysiloxane emulsion or a combination thereof and present in an amount in the range from 0.01 to 2% w / w;

[0034] the emulsifier is selected from the group comprising ethoxylates of sorbitan esters, castor oil ethoxylate 40 moles, calcium alkyl benzene sulfonate sodium salt, ethoxylated trystrylphenol, butylated copolymer, EO / PO block copolymer or a combination thereof, and present in an amount in the range from 5 to 15% w / w;

[0035] the anticaking agent is selected from the group comprising precipitated silica, urea formaldehyde resin, organic bentonite, polyolefin particles, fumed silica or a combination thereof, and present in an amount in the range from 0.1 to 10% w / w;

[0036] the safener is selected from the group comprising cyprosulfamide, isoxadifen-ethyl, mefenpyr-diethyl or a combination thereof and present in an amount in the range from 0.01 to 20% w / w; andthe filler, is selected from the group comprising, silica, precipitated silica, sodium bicarbonate, china clay, methyl soyate, sodium sulphate, sodium lignosulphonate, lactose, lactose anhydrous, bentonite clay, kaolin, diatomaceous earth or a combination thereof and present in an amount quantity sufficient (q.s.) to make 100% w / w formulation;

[0037] In another aspect, the present invention provides a process of preparation of the synergistic ternary herbicidal compositions; comprising Thiencarbazone-methyl and a second herbicide selected from HPPD class of herbicides which includes Tembotrion or Topramezone or Sulcotrione or Mesotrione and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron and agriculturally acceptable excipient(s).

[0038] DETAILED DESCRIPTION OF THE INVENTION

[0039] The definitions provided herein for the terminologies used in the present disclosure are for illustrative purpose only and in no manner limit the scope of the present invention disclosed in the present disclosure.

[0040] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by a person of ordinary skill in the art to which the invention pertains. Although other methods and materials similar, or equivalent, to those described herein can be used in the practice of the present invention, the preferred materials and methods are described herein.

[0041] It is to be noted that, as used in the specification and the appended claims, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to a composition containing “a compound” includes a mixture of two or more compounds. It should also be noted that the term “or” is generally employed in its sense including “and / or” unless the content clearly dictates otherwise.

[0042] As used herein, the terms "comprise", "comprises", "comprising", "includes", "including", “has”, “having”, “contains”, “containing”, “characterized by” or any other variation thereof, are intended to cover a non-exclusive inclusion, subject to any limitation explicitly indicated. For example, a composition, mixture, process or a method that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, mixture, process or method.The transitional phrase “consisting of’ excludes any element, step or ingredient not specified. If in the claim, such would close the claim to the inclusion of materials other than those recited except for impurities ordinarily associated therewith. When the phrase “consisting of’ appears in a clause of the body of a claim, rather than immediately following the preamble, it limits only the element set forth in that clause; other elements are not excluded from the claim as a whole.

[0043] As used herein, the terms “composition” or “compositions” or "formulation" or "formulations" can be used interchangeably, unless stated otherwise, is meant to encompass, and are not limited to, compositions or formulations containing the combination of Thiencarbazone-m ethyl and a second herbicide selected from HPPD class of herbicides which includes Tembotrione or Topramezone or Sulcotrione or Mesotrione and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron.

[0044] As used herein, the term “agriculturally acceptable excipient (s)” refers to inert substances and are auxiliary substances added to the processing or use of pesticide preparations and used to improve the physical and chemical properties of formulations. The auxiliaries themselves are essentially free of biological activity, but can affect the control effect.

[0045] The expression of various quantities in terms of “% w / w” or “%” means the percentage by weight, relative to the weight of the total solute on or composition unless otherwise specified.

[0046] The term “active ingredient” (a.i.) or “active agent” used herein refers to that component of the composition responsible for control of weeds in crops of useful plants.

[0047] As used herein, the term "effective amount" means the amount of the active substances in the compositions to achieve an observable effect on death, retardation, prevention, and removal, destruction, or otherwise diminishing the occurrence and activity of the target weeds. An effective amount of the compositions will also vary according to the prevailing conditions such as desired herbicidal effect and duration, weather, target weeds and species, target crops, mode of application, and the like.

[0048] As used herein, the term “herbicide”, refers to any chemical substance used to destroy / kill, delay, reduce, inhibit or otherwise adversely affect the growth of unwanted plants, especially weeds.As used herein, the term HPPD class of herbicides belongs to the group of p-hydroxyphenyl pyruvate dioxygenase (HPPD) inhibitors which includes Tembotrione, Topramezone, Sulcotrione or Mesotrione.

[0049] As used herein, the term “Thiencarbazone-methyl” includes Thiencarbazone and encompasses its other agrochemically acceptable salt(s), ester(s), derivative(s) or any other modified form of Thiencarbazone-methyl. Thiencarbazone-methyl having IUPAC name methyl 4-[(4,5-dihydro-3-methoxy-4-methyl-5-oxo-lH-l,2,4-triazol-l-yl) carbonylsulfamoyl]-5-m ethylthiophene-3 -carboxylate belongs to the group of sulfonylaminocarbonyltriazolinone herbicide. It acts by inhibition of ALS or AHAS (acetolactate synthase or acetohydroxy acid synthase). It is used for pre-emergence control and post-emergence control of grasses and few broad-leaved weeds in maize, sugarcane crops, soybeans, wheat and other crops.

[0050] As used herein, the term “Tembotrione” encompasses its agrochemically acceptable salt(s), ester(s), derivative(s) or any other modified form of Tembotrione. Tembotrione having IUPAC name 2-{2-chloro-4-(mesyl-3-[(2,2,2-trifluoroethoxy) methyl] benzoyl} clohexane-1, 3-dione, belongs to the group of p-hydroxyphenyl pyruvate dioxygenase (HPPD) inhibitors. It acts by blocking the pathway of prenylquinone biosynthesis in plants. It is used for pre and post emergence control of broad leaves weeds and few grass weeds in maize, sugarcane etc.

[0051] As used herein, the term “Topramezone” encompasses its agrochemically acceptable salt(s), ester(s), derivative(s) or any other modified form of Topramezone. Topramezone having IUPAC name [3-(4,5-dihydro-l,2-oxazol-3-yl)-2-mesyl-o-tolyl] (5 -hydroxy- 1-methylpyrazol -4-yl) methanone belongs to the group of HPPD inhibitors. It is used for pre and post emergence control of broad leaves weeds and few grass weeds in maize, sugarcane etc.

[0052] As used herein, the term “Sulcotrione” encompasses its agrochemically acceptable salt(s), ester(s), derivative(s) or any other modified form of Sulcotrione. Sulcotrione having IUPAC name 2-[2-chloro-4-(mesylbenzoyl) cyclohexane- 1, 3-dione belongs to the group of p-hydroxyphenyl pyruvate dioxygenase (HPPD) inhibitors herbicide. It is used for pre and post emergence control of broad leaves weeds and few grass weeds in maize, sugarcane etc.

[0053] As used herein, the term “Mesotrione” encompasses its agrochemically acceptable salt(s), ester(s), derivative(s) or any other modified form of Mesotrione. Mesotrione having IUPAC name 2-(4-mesyl-2 -nitrobenzoyl) cyclohexane- 1, 3 -di one belongs to the group of p-hydroxyphenyl pyruvate dioxygenase (HPPD) inhibitors herbicide, which ultimately affectscarotenoid biosynthesis. It is used for pre and post emergence control of broad leaves weeds and few grass weeds in maize, sugarcane etc.

[0054] As used herein, the “Halosulfuron-methyl” is a derivative of Halosulfuron and encompasses its agrochemically acceptable salt(s), ester(s), derivative(s) or any other modified form of Halosulfuron-methyl. Halosulfuron-methyl having IUPAC name methyl 3-chloro-5-(4, 6-dimethoxy pyrimidin-2-ylcarbamoylsulfamoyl)-l-methylpyrazole-4-carboxylate belongs to the group of ALS or AHAS inhibitors. It is used for post emergence control of few annual broad leaved and majorily sedge weeds in maize, sugar cane, rice, sorghum, nuts and turf.

[0055] As used herein, the term “Nicosulfuron” encompasses its agrochemically acceptable salt(s), ester(s), derivative(s) or any other modified form of Nicosulfuron. Nicosulfuron having IUPAC name l-(4,6-dimethoxypyrimidin-2-yl)-3-(3-dimethylcarbamoyl-2-pyridylsulfonyl) urea or 2-(4,6-dimethoxypyrimidin-2-ylcarbamoylsulfamoyl)-N, N-dimethylnicotinamide belongs to the group of ALS or AHAS (acetolactate synthase or acetohydroxyacid synthase). It is used for post-emergence control of annual grasses weeds, broad-leaved weeds and sedges in maize and other crops.

[0056] In an embodiment, the present invention provides a synergistic ternary herbicidal compositions comprising Thiencarbazone-methyl and a second herbicide selected from HPPD class of herbicides and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron and agriculturally acceptable excipient(s).

[0057] In an embodiment, the present invention provides a synergistic ternary herbicidal compositions comprising Thiencarbazone-methyl and a second herbicide selected from HPPD class of herbicides which includes Tembotrione or Topramezone or Sulcotrione or Mesotrione and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron and agriculturally acceptable excipient(s).

[0058] In an embodiment, the synergistic ternary herbicidal compositions of the present invention may comprise Thiencarbazone-methyl, Tembotrione, Topramezone, Sulcotrione, Mesotrione, Halosulfuron-methyl or Nicosulfuron in the form of agrochemically acceptable salts, esters, derivatives or polymorphs or any other suitable available form.In an embodiment, the synergistic ternary herbicidal composition of the present invention comprises Thiencarbazone-methyl, a second herbicide Tembotrione, and third herbicide selected from Halosulfuron-methyl or Nicosulfuron and agriculturally acceptable excipient(s).

[0059] In an embodiment, the synergistic ternary herbicidal composition of the present invention comprises Thiencarbazone-methyl, a second herbicide Topramezone, and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron and agriculturally acceptable excipient(s).

[0060] In an embodiment, the synergistic ternary herbicidal composition of the present invention comprises Thiencarbazone-methyl, a second herbicide Sulcotrione, and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron and agriculturally acceptable excipient(s).

[0061] In an embodiment, the synergistic ternary herbicidal composition of the present invention comprises Thiencarbazone-methyl, a second herbicide Mesotrione and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron and agriculturally acceptable excipient(s).

[0062] In one other embodiment, the synergistic ternary herbicidal compositions of the present invention comprises Thiencarbazone-methyl in an amount in the range from 0.1-90% vil'W, a second herbicide selected from HPPD class of herbicides which includes Tembotrione, Topramezone, Sulcotrione or Mesotrione in an amount in the range from 0.1-90% w / w; and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron in an amount in the range from 0.1-90% w / w; and agriculturally acceptable excipient(s).

[0063] In one other embodiment, the synergistic ternary herbicidal compositions of the present invention comprises Thiencarbazone-methyl in an amount in the range from 0.1-50% vil'W, a second herbicide selected from HPPD class of herbicides which includes Tembotrione, Topramezone, Sulcotrione or Mesotrione in an amount in the range from 0.1-50% w / w; and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron in an amount in the range from 0.1-50% w / w; and agriculturally acceptable excipient(s).

[0064] In one other embodiment, the synergistic ternary herbicidal compositions of the present invention comprises Thiencarbazone-methyl in an amount in the range from 0.3-6% vil'W, a second herbicide selected from HPPD class of herbicides which includes Tembotrione, Topramezone, Sulcotrione or Mesotrione in an amount in the range from 1-50% w / w; and athird herbicide selected from Halosulfuron-methyl or Nicosulfuron in an amount in the range from 1-17% w / w ; and agriculturally acceptable excipient(s).

[0065] In one another embodiment, the synergistic ternary herbicidal composition of the present invention comprises Thiencarbazone-methyl in an amount in the range from 0.6-2.8% vil'W, a second herbicide Tembotrione in an amount in the range from 18-26.8% vil'W, a third herbicide Halosulfuron-methyl in an amount in the range from 10-13% w / w; and agriculturally acceptable excipient(s).

[0066] In one another embodiment, the synergistic ternary herbicidal composition of the present invention comprises Thiencarbazone-methyl in an amount in the range from 2-3% vil'W, a second herbicide Tembotrione in an amount in the range from 14-22% w / w; a third herbicide Nicosulfuron in an amount in the range from 6-11% w / w; and agriculturally acceptable excipient(s).

[0067] In one another embodiment, the synergistic ternary herbicidal composition of the present invention comprises Thiencarbazone-methyl in an amount in the range from 1-3% vil'W, a second herbicide Topram ezone in an amount in the range from 4-8% w / w; a third herbicide Halosulfuron-methyl in an amount in the range from 12-13.5% w / w; and agriculturally acceptable excipient(s).

[0068] In one another embodiment, the synergistic ternary herbicidal composition of the present invention comprises Thiencarbazone-methyl in an amount in the range from 2-3% vil'W, a second herbicide Topram ezone in an amount in the range from 4-6% w / w; a third herbicide Nicosulfuron in an amount in the range from 6-12% w / w; and agriculturally acceptable excipient(s).

[0069] In one another embodiment, the synergistic ternary herbicidal composition of the present invention comprises Thiencarbazone-methyl in an amount in the range from 0.7-1.2% vil'W, a second herbicide Sulcotrione in an amount in the range from 20-35% w / w; a third herbicide Halosulfuron-methyl in an amount in the range from 4-6% w / w; and agriculturally acceptable excipient(s).In one another embodiment, the synergistic ternary herbicidal composition of the present invention comprises Thiencarbazone-methyl in an amount in the range from 1-2% vil'W, a second herbicide Sulcotrione in an amount in the range from 35-45% w / w; a third herbicide Nicosulfuron in an amount in the range from 4-6% w / w; and agriculturally acceptable excipient(s).

[0070] In one another embodiment, the synergistic ternary herbicidal composition of the present invention comprises Thiencarbazone-methyl in an amount in the range from 0.5-1.5% vil'W, a second herbicide Mesotrione in an amount in the range from 20-30% w / w; a third herbicide Halosulfuron-methyl in an amount in the range from 4-6.5% w / w; and agriculturally acceptable excipient(s).

[0071] In one another embodiment, the synergistic ternary herbicidal composition of the present invention comprises Thiencarbazone-methyl in an amount in the range from 1-1.4% vil'W, a second herbicide Mesotrione in an amount in the range from 7.5-10% w / w; a third herbicide Nicosulfuron in an amount in the range from 4-5% w / w; and agriculturally acceptable excipient(s).

[0072] In another embodiment, the synergistic ternary herbicidal compositions of the present invention is formulated as Capsule suspension (CS), Dispersible concentrate (DC), Dustable powder (DP), Dry flowable (DF), Emulsifiable concentrate (EC), Emulsifiable granule (EG), Emulsion water-in-oil (EO), Emulsifiable powder (EP), Emulsion oil-in-water (EW), Granules (GR), Micro-emulsion (ME), Oil -dispersion (OD), Oil miscible flowable concentrate (OF), Oil miscible liquid (OL), Oil dispersible powder (OP), Suspension concentrate (SC), Suspension concentrate for direct application (SD), Suspo-emulsion (SE), Water soluble granule (SG), Soluble concentrate (SL), Spreading oil (SO), Water soluble powder (SP), Ultra-low volume (ULV) suspension, Ultra-low volume (ULV) liquid, Water dispersible granules (WDG / WG), Wettable powder (WP), a mixed formulation of CS and SC (ZC) or a mixed formulation of CS and SE (ZE), a mixed formulation of CS and EW (ZW) or any other formulation suitable for combinations.

[0073] In another embodiment, the synergistic ternary herbicidal compositions of the present invention comprises one or more agriculturally acceptable excipient selected from the group comprising of dispersing agent(s), wetting agent(s), dispersing cum wetting agent(s), defoamingagent(s) / defoamer(s) / antifoaming agent(s) / antifoamer(s), anti-caking agent(s), emulsifying agent(s), safener(s), filler(s), or a combination thereof and other excipients as will be required in a particular type of formulation.

[0074] The compositions of present invention uses dispersing agents to prevent agglomeration of solid particles and keep them suspended in fluid. Non-limiting examples of dispersing agent that can be used in the present invention include, but not limited to ethoxylated Polyarylphenol Phosphate Amine salt, polymethyl methacrylate-polyethylene oxide graft copolymer, graft copolymer of polymethyl methacrylate-polyethylene glycol, sodium salt of naphthalene sulfonate condensate, sodium polycarboxylate, ethoxylated isodecyl alcohol, alkyl polyethoxyethanol phosphate ester, blend of acrylic graft copolymer and emulsifier, tri styrylphenol ethoxylate, tri styrylphenol phosphate, anionic tri styrylphenol phosphate surfactant, non-ionic surfactant, polyalkoxylated butyl ether dispersant, sodium alkylnaphthalene sulfonate condensate, sodium lignosulphonate, sodium naphthalene sulphonate salt, sodium alkylnaphthalene sulfonate phenol condensate, sodium alkylnaphthalene sulfonate formaldehyde condensate, modified styrene acrylic polymeric dispersant, modified styrene acrylic polymeric aqueous dispersant, proprietary blend of phosphate ester and sodium naphthalene sulphate formaldehyde condensate, kraft lignin polymer, lignosulfonic acid dispersant, kraft lignosulfonate with a low degree sulfonation, modified sodium lignosulphonate, polymethyl methacrylate-polyethylene glycol graft copolymer, ethoxylated tristyrylphenol, naphthalene sulfonate formaldehyde condensate, mixture of salt of naphthalene sulphonic acid and phenol, alkyl naphthalene sulfonate sodium salt, modified sodium lignosulphonate, modified naphthalene sulfonate formaldehyde condensate, highly sulfonated kraft lignin, naphthalene sulfonate phenol condensate, sodium isopropyl naphthalene sulfonate. One or more dispersing agents may be used in the compositions of the present invention. The dispersing agent is present in the range from 0.1-20% w / w.

[0075] The compositions of present invention uses wetting agent to facilitate the process of dispersion of the granules in the liquid. Non-limiting examples of wetting agents that can be used in the present invention include, but not limited to alkylaryl sulfonate, sodium alkyl dibutyl naphthalene sulfonate, branched short chain alcohol ethoxylate wetter, sodium alkyl naphthalene sulfonate with an anionic blend, polyalkylene glycol ether, EO / PO block copolymer, polyoxyethylene alkyl ether wetter, sodium alkyl naphthalene sulfonate blend,sodium alkyl naphthalene sulfonate blend with a anionic blend, nonionic proprietary surfactant blend, sulphonated anionic wetter, copolymer condensate of ethylene and propylene oxide, ethoxylated isodecyl alcohol, sodium alkyl naphthalene sulfonate formaldehyde condensate, comb-type polymeric surfactant, polyalkylene oxide block copolymer, dicotyl sulfosuccinate, sodium dioctyl sulphosuccinate, ethoxylated polyarylphenol phosphate amine salt, sodium isopropyl naphthalene sulfonate, dibutyl naphthalene sulfonic acid sodium salt, dialkyl naphthalene sulphonate, sodium dioctyl sulfosuccinate. One or more wetting agents may be used in the compositions of the present invention. The wetting agents is present in the range from 0.1-10% w / w.

[0076] The compositions of present invention uses dispersing cum wetting agent. The dispersing cum wetting agent, is selected from the group comprising proprietary blend of phosphate ester and sodium naphthalene sulphate formaldehyde condensate, alkylated vinyl pyrrolidone, dioctyl sulfosuccinate, modified styrene acrylic polymeric dispersant or a combination thereof and present in an amount in the range from 1-10% w / w;

[0077] The composition of present invention also uses antifoaming / defoaming agent. The term “defoaming agent(s)” or “defoamer(s)” or “antifoaming agent(s)” “antifoamer(s)” refers to a chemical additive that reduces and hinders the formation of foam in liquid, semi-solid, or solid formulations. The terms defoaming agent and anti-foaming agent can be used interchangeably. Suitable defoamer used herein, but not limited to, polydimethylsiloxane emulsion, silicon emulsion, powdered silicone antifoam, silicon antifoam emulsion, silicon emulsion, polysiloxane emulsion, fluorosilicone, EO / PO based defoamer, organic fluorine compounds. One or more defoaming agent may be used in the compositions of the present invention. Defoaming agent is present in the range from 0.01 to 2% w / w.

[0078] The composition of present invention also uses emulsifying agent. The suitable emulsifier is selected from the group comprising ethoxylates of sorbitan esters, castor oil ethoxylate 40 moles, calcium alkyl benzene sulfonate sodium salt, ethoxylated trystrylphenol, butylated copolymer, EO / PO block copolymer or a combination thereof, and present in an amount in the range from 5 to 15% w / w;

[0079] The composition of present invention also uses anticaking agent. The suitable anticaking agent is selected from the group comprising precipitated silica, urea formaldehyde resin, organicbentonite, polyolefin particles, fumed silica or a combination thereof, and present in an amount in the range from 0.1 to 10% vil'W,

[0080] A safener is to be understood as meaning a compound which eliminates or reduces the phytotoxic properties of herbicide in respect to useful plants, without substantially reducing the herbicidal activity against harmful plants. Non limiting examples of safeners that can be 10 employed in present invention are mefenpyr, mefenpyr-diethyl, AD67, benoxacor, cloquintocet-mexyl, cyometrinil, cyprosulfamide, dichlormid, dicyclonon, dietholate, 14 fenchlorazole, fenchlorazole-ethyl, fenclorim, flurazole, fluxofenim, furilazole, isoxadifen-ethyl, mephenate, metcamifen, naphthalic anhydride, oroxabetrinil, 4-(dichloroacetyl)-l-oxa-4- azaspiro[4.5]decane and 2,2,5-trimethyl-3- (dichloroacetyl)-l,3-oxazolidine or a 15 combination thereof and is present in an amount in the range from 0.01 to 20% w / w.

[0081] The compositions of present invention uses filler. Suitable fillers that may be used in the compositions of the present invention include, but not limited to, silica, precipitated silica, sodium bicarbonate, china clay, methyl soyate, sodium sulphate, sodium lignosulphonate, lactose anhydrous lactose, bentonite clay, kaolin, diatomaceous earth. The filler may be used in an amount of quantity sufficient to make 100%w / w formulation.

[0082] In one other embodiment, the present invention provides a process of preparation of the synergistic ternary herbicidal compositions comprising Thiencarbazone-methyl and a second herbicide selected from HPPD class of herbicides which includes Tembotrione or Topramezone or Sulcotrione or Mesotrione and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron and agriculturally acceptable excipient(s).

[0083] In an embodiment, the present invention provides a process for the preparation of a water dispersible granules (WDG / WG) formulation which comprises: a) weighing and mixing of required active ingredients and other ingredients using proper ribbon blender type mixer till homogenous material obtained; b) milling in a suitable air jet mill; c) grinding the material to obtain desired particle size (D90- <10 micron); d) blending in a post blender; e) preparing dough of fine milled powder in dough maker machine with addition of suitable quantity of water and defoamer; f) extruding the granules of prepared dough using extruder machine having suitable screen; and g) drying the extruded granules using a Fluid Bed Dryer while maintaining at temperature 50°C to obtain water dispersible granules formulation.In an embodiment, the present invention provides a process for the preparation of a wettable powder (WP) formulation which comprises: a) weighing and mixing of required active ingredients and other ingredients using proper ribbon blender type mixer till homogenous material obtained; b) milling in a suitable air jet mill; c) grinding the material to obtain desired particle size (D90- <10 micron); d) blending in a post blender and e) mixing homogeneously to obtain the wettable powder formulation.

[0084] In an embodiment, the present invention provides a process for the preparation of Oildispersion (OD), formulation which comprises: a) taking 80% of filler (methyl soyate) of total batch and adding antifoam, dispersing, wetting agent and required active ingredients and safener and other ingredients, stirring and mixing under high speed homogenizer to make homogeneous slurry; b) wet grinding the material using bead mill to obtain homogeneous slurry to obtain desired particle size (D90- <10 micron); c) discharging material and wash the mill 10 using remaining methyl soyate and adding this washed methyl soyate in milled material and mix well; and d) adding filler (precipitated silica) under high shear and homogenized till homogeneous distribution of silica solution to obtain Oil-dispersion formulation.

[0085] The synergistic ternary herbicidal compositions of the present invention are found to be effective to control wide spectrum of weeds such as Narrow Leaf Weeds viz., Echinochloa colonum, Dactyloctenium ageptium, Brachiaria repens, Brachiaria ramose, Elusine indica, Dinebra arabica, Digitaria sanguinalis, Eragrostis spp.; Broad Leaf Weeds viz., Amaranthus virdis, Trianthema monogyma, Portulaca oleracea, Physalis minima, Digera arvensis, Alternanthra sesilis, Boerhavia diffusa, Parhtenium hysterophorus, Euphorbia hirta, Commelina benghalensis, Cor chorus olitorius, Phyllantus niruri, Chenopodium album and Sedges viz., Cyperus rotundus, Cyperus esculentus. Further the compositions of the present invention may be used to control variety of weeds in Sugarcane, Maize, Rice, Wheat, Barley, Sorghum crops etc., particularly the compositions of present invention tested on Sugarcane and Maize crop and gave significantly better results compared to solo and binary compositions.

[0086] In an embodiment of the present invention, the synergistic ternary herbicidal compositions used for the post-emergence control of grasses, broad leaved weeds, and sedges in sugarcane and maize crops for protecting these crops during critical crop weed competition period (0-100 days) from weeds.The the synergistic ternary herbicidal compositions of the present invention can be applied by spraying using flat-fan or flood-jet nozzles. The rate of application amount of the prepared compositions varies depending on, or example, the blending ratio of active ingredients, meteorological condition, dosage form, application time, application method, application place, weeds to be controlled, and a target crop, in ordinary cases.

[0087] The inventors of the present invention have surprisingly found that the compositions of the present invention are synergetic in nature. The synergetic compositions of the present invention showed enhanced control over existing compositions. Moreover, the compositions of the present invention are more effective than their individual counterparts or when two actives are taken together. The synergetic compositions of the present invention also make it possible to use markedly smaller quantities of the active ingredients as compared to their individual counterparts. This allows a substantial reduction in the application rates of each of these active ingredients, while maintaining good efficacy. The decrease in application rates reduces treatment cost to the farmer and also eases the burden on the environment both from manufacturing waste and crop protection chemical residues.

[0088] The synergistic ternary herbicidal compositions of present invention provide a wide spectrum control of weed flora and minimizes the risk of development of resistance ultimately, which reflects the delays in emergence of the resistant strains of weeds towards herbicides hence provide effective and economical control of undesired weeds.

[0089] The synergistic ternary herbicidal compositions of the present invention provide a number of other advantages:

[0090] • Significant increased efficacy in comparison to the other formulations tested during the trials.

[0091] • Is synergistic hence denies the need of sequential application of solo herbicides to control different weed flora thereby reducing the environmental load of herbicides. • Uses lesser amounts of active ingredients hence considerable reduction in cost, which would benefit farmers.

[0092] • The compositions provided one shot solution to farmers to control broad spectrum of weed flora.

[0093] • Is storage stable.• Is completely safer to crops (non-phytotoxic).

[0094] • Reduction in environmental load of herbicides residues.

[0095] • Reduction in quantity of water required for spray of the product in agriculture fields.

[0096] • Reduction in generation of empty containers of product, thereby, reducing concerns of their disposal.

[0097] • Provides a broad range of product choice for effective weed management.

[0098] Thus, from the foregoing description, it will be apparent to one of the persons skilled in the art that many changes and modifications can be made thereto without departing from the scope of the invention as set forth in the description. Accordingly, it is not intended that the scope of the foregoing description be limited to the description set forth above, but rather that such description be construed as encompassing such features that reside in the present invention, including all the features and embodiments that would be treated as equivalents thereof by those skilled in the relevant art.

[0099] The embodiments of the present invention are more particularly described in the following examples that are intended as illustrations only, since numerous modifications and variations within the scope of the present invention will be apparent to those of skill in the art. Unless otherwise noted, all parts, percentages and ratios reported in the following examples are on a weight basis and all reagents used in the examples were obtained or are available from the chemical suppliers.

[0100] EXAMPLES

[0101] The synergistic ternary herbicidal compositions of the present invention comprising Thiencarbazone-methyl and a second herbicide selected from HPPD class of herbicides which includes Tembotrione or Topramezone or Sulcotrione or Mesotrione and a third herbicide selected from Halosulfuron-methyl or Nicosulfuron and agriculturally acceptable excipient(s) in the form of water dispersible granule (WDG / WG) formulation, wettable powder (WP) formulation, and oil dispersible (OD) formulation and is provided in table 1-37. The unit of each component of the compositions are expressed in “% w / w” i.e. the percentage by weight, relative to the weight of the total solution or composition. All the compositions are prepared by following the processes as disclosed in description. All the prepared compositions of the present invention have been tested for stability / shelf life at accelerated temperature.Table 1: Examples 1 to 3: Compositions of Thiencarbazone -methyl + Tembotrione + Halosulfuron-methyl

[0102]

[0103] QS: quantity sufficient required to make 100% w / w formulation

[0104] Table 2: Quantities of ingredients in gram charged to prepare the compositions of Eg 1 to 3 of table 1

[0105]

[0106]

[0107] Process of preparing synergistic ternary herbicidal compositions of table 2 in (WG) form:

[0108] The ingredients were weighed and taken as per Table 2. The all three active ingredients Thiencarbazone-methyl, Tembotrione, Halosulfuron-methyl and safener and other ingredients such as dispersing agent, wetting agent, anticaking agent, fillers are taken as per above composition and are mixed using proper ribbon blender type mixer till homogenous material obtained; now this premix is milled / grind in a suitable air jet mill to obtain desired particle size (D90- <10 micron); after grinding or mixing, blended the obtained fine powder in post blender to obtain homogenous powder; the obtained powder is mixed with water and defoamer for dough preparation and then extruded through extruder having suitable screen and dry the extruded granules using Fluid bed dryer to obtain water dispersible granules (WDG / WG) formulation.

[0109] Process of preparing synergistic ternary herbicidal compositions of table 2 in (WP) form:

[0110] The ingredients were weighed and taken as per Table 2. The all three active ingredients Thiencarbazone-methyl, Tembotrione, Halosulfuron-methyl and safener and other ingredients such as dispersing agent, wetting agent, anticaking agent, defoaming agent, fillers are taken as per above composition and are mixed using proper ribbon blender type mixer till homogenous material obtained; now this premix is milled in a suitable air jet mill and grind to obtain desired particle size (D90- <10 micron); after grinding or mixing, blended the obtained fine powder in post blender to obtain homogenous powder which is a wettable powder (WP) formulation.

[0111] Process of preparing synergistic ternary herbicidal compositions of table 2 in (OD) form:

[0112] The ingredients were weighed and taken as per Table 2. The all three active ingredients Thiencarbazone-methyl, Tembotrione, Halosulfuron-methyl and safener and other ingredients such as dispersing agent, defoaming agent, fillers are taken as per above composition and are mix well using proper mixing vessel till homogenous blend of material obtained; now thispremix is milled using suitable sand mill to obtain desired particle size (D90- <10 micron); after milling, blend the emulsifier into post mixing blender to obtain homogenous liquid which is Oil-dispersion (OD) formulation.

[0113] Table 3: Stability studies of the composition of Eg 1 of table 2

[0114]

[0115] Table 4: Stability studies of the composition of Eg 2 of table 2

[0116]

[0117]

[0118] Table 5: Stability studies of the composition of Eg 3 of table 2

[0119] <

[0120]

[0121] Table 6: Examples 4 to 6: Compositions of Thiencarbazone -methyl + Tembotrione + Nicosulfuron

[0122]

[0123]

[0124] Table 7: Quantities of ingredients in gram charged to prepare the compositions of Eg 4 to 6 of table 6

[0125]

[0126] Process of preparing synergistic ternary herbicidal compositions of table 7 in (WG, WP, OD) form are same as given under Table 2.

[0127] Table 8: Stability studies of the composition of Eg 4 of table 7

[0128]

[0129]

[0130] Table 9: Stability studies of the composition of Eg 5 of table 7

[0131]

[0132] Table 10: Stability studies of the composition of Eg 6 of table 7

[0133]

[0134] <

[0135]

[0136] Table 11: Examples 7 to 9: Compositions of Thiencarbazone -methyl + Topramezone + Halosulfuron-methyl

[0137]

[0138] Table 12: Quantities of ingredients in gram charged to prepare the compositions of Eg 7 to 9 of table 11

[0139]

[0140] Process of preparing synergistic ternary herbicidal compositions of table 12 in (WG, WP, OD) form are same as given under Table 2.

[0141] Table 13: Stability studies of the composition of Eg 7 of table 12

[0142]

[0143]

[0144] Table 14: Stability studies of the composition of Eg 8 of table 12

[0145]

[0146] Table 15: Stability studies of the composition of Eg 9 of table 12

[0147]

[0148] <

[0149]

[0150] Table 16: Examples 10 and 11: Compositions of Thiencarbazone -methyl + Topramezone + Nicosulfuron

[0151]

[0152] Table 17: Quantities of ingredients in gram charged to prepare the compositions of Eg 10 and 11 of table 16

[0153]

[0154] Process of preparing synergistic ternary herbicidal compositions of table 17 in (WG, WP) form are same as given under Table 2.Table 18: Stability studies of the composition of Eg 10 of table 17

[0155]

[0156] Table 19: Stability studies of the composition of Eg 11 of table 17

[0157]

[0158] Table 20: Examples 12 to 14: Compositions of Thiencarbazone -methyl + Sulcotrione + Halosulfiiron-methyl

[0159]

[0160] Table 21 : Quantities of ingredients in gram charged to prepare the compositions of Eg 12 to 14 of table 20

[0161]

[0162]

[0163] Process of preparing synergistic ternary herbicidal compositions of table 21 in (WG, WP, OD) form are same as given under Table 2.

[0164] Table 22: Stability studies of the composition of Eg 12 of table 21

[0165]

[0166] Table 23: Stability studies of the composition of Eg 13 of table 21

[0167]

[0168]

[0169] Table 24: Stability studies of the composition of Eg 14 of table 21

[0170] <

[0171]

[0172] Table 25: Examples 15 and 16: Compositions of Thiencarbazone -methyl + Sulcotrione + Nicosulfuron

[0173]

[0174]

[0175] Table 26: Quantities of ingredients in gram charged to prepare the compositions of Eg 15 and 16 of table 25

[0176]

[0177] Process of preparing synergistic ternary herbicidal compositions of table 26 in (WG, WP) form are same as given under Table 2.

[0178] Table 27: Stability studies of the composition of Eg 15 of table 26

[0179]

[0180]

[0181] Table 28: Stability studies of the composition of Eg 16 of table 26

[0182]

[0183] Table 29: Examples 17 and 18: Compositions of Thiencarbazone -methyl + Mesotrione + Halosulfuron-methyl

[0184]

[0185]

[0186] Table 30: Quantities of ingredients in gram charged to prepare the compositions of Eg 17 and 18 of table 29

[0187]

[0188] Process of preparing synergistic ternary herbicidal compositions of table 30 in (WG, WP) form are same as given under Table 2.

[0189] Table 31: Stability studies of the composition of Eg 17 of table 30

[0190]

[0191]

[0192] Table 32: Stability studies of the composition of Eg 18 of table 30

[0193]

[0194] Table 33: Examples 19 to 21: Compositions of Thiencarbazone -methyl + Mesotrione + Nicosulfuron

[0195]

[0196]

[0197] Table 34: Quantities of ingredients in gram charged to prepare the compositions of Eg 19 to 21 of table 33

[0198]

[0199] Process of preparing synergistic ternary herbicidal compositions of table 34 in (WG, WP, OD) form are same as given under Table 2.

[0200] Table 35: Stability studies of the composition of Eg 19 of table 34

[0201]

[0202]

[0203] Table 36: Stability studies of the composition of Eg 20 of table 34

[0204]

[0205] Table 37: Stability studies of the composition of Eg 21 of table 34

[0206]

[0207] <

[0208]

[0209] As evident from the foregoing tables (1-37) that all the desired compositions have been prepared successfully and has been tested for stability / shelf life at accelerated temperature (shelf life based on accelerated storage at 54 ± 2°C). After 14 days of storage at 54.0 ± 2 °C, there were no significant changes in active ingredient content, suspensibility, wettability, dispersibility, pH and has passes the sieve test. Therefore, it is concluded that compositions of present invention have good stability and shelflife.

[0210] BIO-EFFICACY OF THE HERBICIDAL COMPOSITIONS OF THE PRESENT INVENTION

[0211] Experimental trials were conducted to evaluate the synergistic ternary herbicidal compositions of the present invention in India against major weeds on Sugarcane and Maize Crops. Test trails were conducted on ternary compositions of present invention and comparative solo and binary compositions as per the details provided in Table 38-117. The abbreviations used in table 38-117 are as follows:

[0212] TN: Treatment Number

[0213] ROC: Reduction Over Control

[0214] g.a.i: gram active ingredients

[0215] ha: hectare

[0216] DAA: Days after herbicide application

[0217] DAP: days after planting

[0218] O=Observed weed control efficacy (WCE) (% weed reduction);

[0219] E=Expected weed control efficacy (WCE) (% weed reduction) Calculated using Colby Formula;CR=Colby ratio

[0220] UTC: Untreated control

[0221] Experimental design and method for Sugarcane Crop

[0222] The present field experiments were conducted during April 2024 in the Muzaffarnagar district of Uttar Pradesh, India to evaluate the performance of different weed control treatments in sugarcane. The trial was laid out in a Randomized Block Design (RBD) with twenty-two treatments or twenty-one treatments or eight treatments as per study design, each replicated three times. The commercially popular sugarcane variety CO-238 was used for the study. Sugarcane was planted at a row spacing of 90 cm and irrigated through the flood irrigation method. All recommended agronomic practices were followed to maintain the crop. Herbicide application was carried out 40 days after planting (DAP) using a knapsack sprayer fitted with a flat-fan nozzle, maintaining a spray volume of 500 L of water per hectare. Weed data were recorded species-wise at three sampling points per plot, using a 0.25 m2quadrat. Observations were taken at 15, 30, 45 and 60 days after application (DAA). The weed population values presented in the table represent the mean of all the above observation intervals. Cane yield was recorded at harvest. The weed control efficacy (WCE) % calculated by using below formula.

[0223] No of Weeds in UTC — No of weeds in treated plot

[0224] %WCE = . > — X 100

[0225] No of weeds in UTC

[0226] The percent increase yield over control was calculated by using following formula:

[0227] Yield in treated plot -Yield in control plot

[0228] Percent increase yield = - X 100

[0229] Yield in control plot

[0230] Experimental design and method for Maize Crop

[0231] The present field experiments were carried out during Kharif 2024 in the Chhindwara district of Madhya Pradesh, India to evaluate the efficacy of various weed control treatments in Maize crop. The study was laid out in a Randomized Block Design (RBD) comprising twenty-two treatments, or twenty-one treatments or eight treatments as per study design, each replicated three times. The widely cultivated maize hybrid Dekalb 9126 was selected for the trial. Maizewas planted at a row spacing of 60 cm and the crop was maintained by adopting all recommended agronomic practices to ensure uniform growth. Herbicide application was carried out 20 days after planting (DAP) using a knapsack sprayer fitted with a flat-fan nozzle, maintaining a spray volume of 500 L of water per hectare. Weed population was recorded species-wise using a 0.25 m2quadrat at three sampling points per plot. Observations were collected at the following intervals after herbicide application 15, 30, 45 days after application (DAA). The weed population values presented in the table represent the mean of observations recorded at 15, 30, and 45 DAA. Maize yield was recorded at harvest. The weed control efficacy (WCE) % and percent increase yield over control calculated by using formula given above.

[0232] Phytotoxicity Observations: The phytotoxicity assessments were recorded at 7, 15, 20 and 30 DAA at the dose of test trials as well as at higher dose to assess the safety of prepared herbicide compositions on crops. Phytotoxicity symptoms such as epinasty, hyponasty, necrosis, vein clearing, and wilting were scored using the standard phytotoxicity rating scale shown below.

[0233] &

[0234]

[0235] Evaluation of synergistic effect

[0236] A synergistic effect exists whenever the action of an active ingredient combination is greater than the sum of the actions of the individual components. Synergism was calculated by using Colby’s method, Weeds, vol. 15 No. l(Jan 1967), pp. 20-2.

[0237] The synergistic action expected for a given combination of two active components can be calculated as follows:

[0238] E.(X+Y> - ™

[0239] 100

[0240] The synergistic action expected for a given combination of three active components can be calculated as follows:(XY+YZ+XZ) XYZ

[0241] E=(X+Y+Z) - + - 100 10000

[0242] Where:

[0243] E represents expected percentage of control for the combination of the three active ingredients at defined doses (for example equal to x, y and z respectively),

[0244] X is the percentage of control observed by the compound (I) at a defined dose (equal to x), Y is the percentage of control observed by the compound (II) at a defined dose (equal to y), Z is the percentage of control observed by the compound (III) at a defined dose (equal to z). If observed control of the combination > Expected control, the combination is synergistic (Colby ratio > 1)

[0245] If observed control of the combination < Expected control, the combination is antagonistic (Colby ratio < 1)

[0246] If observed control of the combination = Expected control, the combination is additive (Colby ratio =1)

[0247] Table 38: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Tembotrione + Halosulfuron-methyl on Sugarcane Crop against Narrow Leaf Weeds

[0248]

[0249]

[0250] Table 39: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Tembotrione + Halosulfuron-methyl on Sugarcane Crop against Broad Leaf Weeds

[0251]

[0252]

[0253] Table 40: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Tembotrione + Halosulfuron-methyl on Sugarcane Crop against Sedges

[0254]

[0255]

[0256] Table 41: Effect on yield of Herbicidal Composition Thiencarbazone-methyl + Tembotrione + Halosulfuron-methyl on Sugarcane Crop

[0257]

[0258]

[0259] Table 42: Phytotoxic effect of Herbicidal Composition Thiencarbazone-methyl + Tembotrione + Halosulfuron-methyl on Sugarcane Crop

[0260] &

[0261]

[0262] Table 43: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Tembotrione + Halosulfuron-methyl on Maize Crop against Narrow Leaf Weeds

[0263]

[0264]

[0265] Table 44: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Tembotrione + Halosulfuron-methyl on Maize Crop against Broad Leaf Weeds

[0266]

[0267]

[0268] Table 45: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Tembotrione + Halosulfuron-methyl on Maize Crop against Sedges

[0269]

[0270]

[0271] Table 46: Effect on yield of Herbicidal Composition Thiencarbazone-methyl + Tembotrione + Halosulfuron-methyl on Maize Crop

[0272]

[0273]

[0274] Table 47: Phytotoxic effect of Herbicidal Composition Thiencarbazone-methyl + Tembotrione + Halosulfuron-methyl on Maize Crop

[0275] &

[0276]

[0277] Table 48: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Tembotrione + Nicosulfuron on Sugarcane Crop against Narrow Leaf Weeds

[0278]

[0279]

[0280] Table 49: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Tembotrione + Nicosulfuron on Sugarcane Crop against Broad Leaf Weeds

[0281]

[0282] Table 50: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Tembotrione + Nicosulfuron on Sugarcane Crop against Sedges

[0283]

[0284] Table 51: Effect on yield of Herbicidal Composition Thiencarbazone-methyl + Tembotrione + Nicosulfuron on Sugarcane Crop

[0285]

[0286]

[0287] Table 52: Phytotoxic effect of Herbicidal Composition Thiencarbazone-methyl + Tembotrione + Nicosulfuron on Sugarcane Crop

[0288] &

[0289]

[0290] Table 53: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Tembotrione + Nicosulfuron on Maize Crop against Narrow Leaf Weeds

[0291]

[0292]

[0293] Table 54: Efficacy of Herbicidal Composition Thiencarbazone-methyl + Tembotrione + Nicosulfuron on Maize Crop against Broad Leaf Weeds

[0294]

[0295] Table 55: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Tembotrione + Nicosulfuron on Maize Crop against Sedges

[0296]

[0297] Table 56: Effect on yield of Herbicidal Composition Thiencarbazone-methyl + Tembotrione + Nicosulfuron on Maize Crop

[0298]

[0299]

[0300] Table 57: Phytotoxic effect of Herbicidal Composition Thiencarbazone-methyl + Tembotrione + Nicosulfuron on Maize Crop

[0301] &

[0302]

[0303] Table 58: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Topramezone + Halosulfuron-methyl on Sugarcane Crop against Narrow Leaf Weeds

[0304]

[0305]

[0306] Table 59: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Topramezone + Halosulfuron-methyl on Sugarcane Crop against Broad Leaf Weeds

[0307]

[0308]

[0309] Table 60: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Topramezone + Halosulfuron-methyl on Sugarcane Crop against Sedges

[0310]

[0311] Table 61: Effect on yield of Herbicidal Composition Thiencarbazone -methyl + Topramezone + Halosulfuron-methyl on Sugarcane Crop

[0312] TN

[0313]

[0314] Treatments

[0315]

[0316] Dose

[0317]

[0318] I E | CR |

[0319]

[0320]

[0321] Table 62: Phytotoxic effect of Herbicidal Composition Thiencarbazone -methyl + Topramezone + Halosulfuron-methyl on Sugarcane Crop

[0322] &

[0323]

[0324] Table 63: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Topramezone + Halosulfuron-methyl on Maize Crop against Narrow Leaf Weeds

[0325]

[0326]

[0327] Table 64: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Topramezone + Halosulfuron-methyl on Maize Crop against Broad Leaf Weeds

[0328]

[0329]

[0330] Table 65: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Topramezone + Halosulfuron-methyl on Maize Crop against Sedges

[0331]

[0332]

[0333] Table 66: Effect on yield of Herbicidal Composition Thiencarbazone -methyl + Topramezone + Halosulfuron-methyl on Maize Crop

[0334]

[0335]

[0336] Table 67: Phytotoxic effect of Herbicidal Composition Thiencarbazone -methyl + Topramezone + Halosulfuron-methyl on Maize Crop

[0337] &

[0338]

[0339]

[0340] Table 68: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Topramezone + Nicosulfuron on Sugarcane Crop against Narrow Leaf Weeds

[0341]

[0342] Table 69: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Topramezone + Nicosulfuron on Sugarcane Crop against Broad Leaf Weeds

[0343]

[0344] Table 70: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Topramezone + Nicosulfuron on Sugarcane Crop against Sedges

[0345]

[0346] Table 71: Effect on yield of Herbicidal Composition Thiencarbazone -methyl + Topramezone + Nicosulfuron on Sugarcane Crop

[0347]

[0348] Table 72: Phytotoxic effect of Herbicidal Composition Thiencarbazone -methyl + Topramezone + Nicosulfuron on Sugarcane Crop

[0349] &

[0350]

[0351]

[0352] Table 73: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Topramezone + Nicosulfuron on Maize Crop against Narrow Leaf Weeds

[0353]

[0354] Table 74: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Topramezone + Nicosulfuron on Maize Crop against Broad Leaf Weeds

[0355]

[0356] Table 75: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Topramezone + Nicosulfuron on Maize Crop against Sedges

[0357]

[0358]

[0359] Table 76: Effect on yield of Herbicidal Composition Thiencarbazone -methyl + Topramezone + Nicosulfuron on Maize Crop

[0360]

[0361] Table 77: Phytotoxic effect of Herbicidal Composition Thiencarbazone -methyl + Topramezone + Nicosulfuron on Maize Crop

[0362] &

[0363]

[0364] Table 78: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Sulcotrione + Halosulfuron-methyl on Sugarcane Crop against Narrow Leaf Weeds

[0365]

[0366] Table 79: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Sulcotrione + Halosulfuron-methyl on Sugarcane Crop against Broad Leaf Weeds

[0367]

[0368]

[0369] Table 80: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Sulcotrione + Halosulfuron-methyl on Sugarcane Crop against Sedges

[0370]

[0371]

[0372] Table 81: Effect on yield of Herbicidal Composition Thiencarbazone-methyl + Sulcotrione + Halosulfuron-methyl on Sugarcane Crop

[0373]

[0374]

[0375] Table 82: Phytotoxic effect of Herbicidal Composition Thiencarbazone-methyl + Sulcotrione + Halosulfuron-methyl on Sugarcane Crop

[0376] &

[0377]

[0378] Table 83: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Sulcotrione + Halosulfuron-methyl Maize Crop against Narrow Leaf Weeds

[0379]

[0380] Table 84: Efficacy of Herbicidal Composition Thiencarbazonemethyl + Sulcotrione + Halosulfuron-methyl on Maize Crop against Broad Leaf Weeds

[0381]

[0382]

[0383] Table 85: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Sulcotrione + Halosulfuron-methyl on Maize Crop against Sedges

[0384]

[0385]

[0386] Table 86: Effect on yield of Herbicidal Composition Thiencarbazone-methyl + Sulcotrione + Halosulfuron-methyl on Maize Crop

[0387]

[0388]

[0389] Table 87: Phytotoxic effect of Herbicidal Composition Thiencarbazone-methyl + Sulcotrione + Halosulfuron-methyl on Maize Crop

[0390] &

[0391]

[0392] Table 88: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Sulcotrione + Nicosulfuron on Sugarcane Crop against Narrow Leaf Weeds

[0393]

[0394] Table 89: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Sulcotrione + Nicosulfuron on Sugarcane Crop against Broad Leaf Weeds

[0395]

[0396] Table 90: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Sulcotrione + Nicosulfuron on Sugarcane Crop against Sedges

[0397]

[0398]

[0399] Table 91: Effect on yield of Herbicidal Composition Thiencarbazone-methyl + Sulcotrione + Nicosulfuron on Sugarcane Crop

[0400]

[0401] Table 92: Phytotoxic effect of Herbicidal Composition Thiencarbazone-methyl + Sulcotrione + Nicosulfuron on Sugarcane Crop

[0402] &

[0403]

[0404] Table 93: Efficacy of Herbicidal Composition Thiencarbazone-methyl + Sulcotrione + Nicosulfuron on Maize Crop against Narrow Leaf Weeds

[0405]

[0406]

[0407] Table 94: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Sulcotrione + Nicosulfuron on Maize Crop against Broad Leaf Weeds

[0408]

[0409] Table 95: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Sulcotrione + Nicosulfuron on Maize Crop against Sedges

[0410]

[0411] Table 96: Effect on yield of Herbicidal Composition Thiencarbazone-methyl + Sulcotrione + Nicosulfuron on Maize Crop

[0412]

[0413] Table 97: Phytotoxic effect of Herbicidal Composition Thiencarbazone-methyl + Sulcotrione + Nicosulfuron on Maize Crop

[0414] &

[0415]

[0416] Table 98: Efficacy of Herbicidal Composition Thiencarbazone-methyl + Mesotrione + Halosulfuron-methyl on Sugarcane Crop against Narrow Leaf Weeds

[0417]

[0418]

[0419] Table 99: Efficacy of Herbicidal Composition Thiencarbazone-methyl + Mesotrione + Halosulfuron-methyl on Sugarcane Crop against Broad Leaf Weeds

[0420]

[0421] Table 100: Efficacy of Herbicidal Composition Thiencarbazone-methyl + Mesotrione + Halosulfuron-methyl on Sugarcane Crop against Sedges

[0422]

[0423] Table 101: Effect on yield of Herbicidal Composition Thiencarbazone-methyl + Mesotrione + Halosulfuron-methyl on Sugarcane Crop

[0424] TN

[0425]

[0426] Treatments

[0427]

[0428] Dose

[0429]

[0430] CR

[0431]

[0432] Table 102: Phytotoxic effect of Herbicidal Composition Thiencarbazone-methyl + Mesotrione + Halosulfuron-methyl on Sugarcane Crop

[0433] &

[0434]

[0435] Table 103: Efficacy of Herbicidal Composition Thiencarbazone-methyl + Mesotrione + Halosulfuron-methyl on Maize Crop against Narrow Leaf Weeds

[0436]

[0437]

[0438] Table 104: Efficacy of Herbicidal Composition Thiencarbazone-methyl + Mesotrione + Halosulfuron-methyl on Maize Crop against Broad Leaf Weeds

[0439]

[0440] Table 105: Efficacy of Herbicidal Composition Thiencarbazone-methyl + Mesotrione + Halosulfuron-methyl on Maize Crop against Sedges

[0441]

[0442] Table 106: Effect on yield of Herbicidal Composition Thiencarbazone-methyl + Mesotrione + Halosulfuron-methyl on Maize Crop

[0443]

[0444]

[0445] Table 107: Phytotoxic effect of Herbicidal Composition Thiencarbazone-methyl + Mesotrione + Halosulfuron-methyl on Maize Crop

[0446] &

[0447]

[0448] Table 108: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Mesotrione + Nicosulfuron on Sugarcane Crop against Narrow Leaf Weeds

[0449]

[0450]

[0451] Table 109: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Mesotrione + Nicosulfuron on Sugarcane Crop Crop against Broad Leaf Weeds

[0452]

[0453]

[0454] Table 110: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Mesotrione + Nicosulfuron on Sugarcane Crop against Sedges

[0455]

[0456]

[0457] Table 111: Effect on yield of Herbicidal Composition Thiencarbazone-methyl + Mesotrione + Nicosulfuron on Sugarcane Crop

[0458]

[0459]

[0460] Table 112: Phytotoxic effect of Herbicidal Composition Thiencarbazone-methyl + Mesotrione + Nicosulfuron on Sugarcane Crop

[0461] &

[0462]

[0463] Table 113: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Mesotrione + Nicosulfuron on Maize Crop against Narrow Leaf Weeds

[0464]

[0465]

[0466] Table 114: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Mesotrione + Nicosulfuron on Maize Crop against Broad Leaf Weeds

[0467]

[0468]

[0469] Table 115: Efficacy of Herbicidal Composition Thiencarbazone -methyl + Mesotrione + Nicosulfuron on Maize Crop against Sedges

[0470]

[0471]

[0472] Table 116: Effect on yield of Herbicidal Composition Thiencarbazone-methyl + Mesotrione + Nicosulfuron on Maize Crop

[0473]

[0474]

[0475] Table 117: Phytotoxic effect of Herbicidal Composition Thiencarbazone-methyl + Mesotrione + Nicosulfuron on Maize Crop

[0476] &

[0477]

[0478] It is evident from the above tables 38-117 that the synergistic ternary herbicidal compositions of the present invention gave excellent control of tested weeds on tested crops wherein all the prepared ternary compositions found synergistic as compared to the reference products (solo or binary compositions). It has also been found that use of ternary compositions of present invention not only gave better efficiency by using low a.i., content compared to binary and solocomposition but also broaden the spectrum of compositions as the solo and binary compositions are not providing sufficient broad weed control in given duration. It has also been found that use of synergistic ternary herbicidal compositions of the present invention were found completely safe (non-phytotoxic) on tested crops.

[0479] From the foregoing it will be observed that numerous modifications and variations can be effectuated without departing from the true spirit and scope of the novel concepts of the present invention. It is to be understood that no limitations with respect to the specific embodiments illustrated is intended or should be inferred. It should be understood that all such modifications and improvements have been deleted herein for the sake of conciseness and readability but are properly within the scope of the following claims.

Claims

Claims:

1. A synergistic ternary herbicidal compositions comprising of:a) Thiencarbazone-methyl;b) second herbicide selected from HPPD class of herbicides;c) third herbicide selected from Halosulfuron-methyl or Nicosulfuron; andd) agriculturally acceptable excipient(s).

2. The synergistic ternary herbicidal compositions as claimed in claim 1, wherein HPPD class of herbicides is selected from Tembotrione or Topramezone or Sulcotrione or Mesotrione.

3. The synergistic ternary herbicidal compositions as claimed in claim 1, wherein a) Thiencarbazone-methyl is present in an amount in the range from 0.3-6 % w / w; b) second herbicide selected from HPPD class of herbicides is present in an amount in the range from 1-50 % w / w;c) third herbicide selected from Halosulfuron-methyl or Nicosulfuron is present in an amount in the range from 1-17 % w / w.

4. The synergistic ternary herbicidal compositions as claimed in claim 1, wherein the compositions is one of;a) Thiencarbazone-methyl is present in an amount in the range from 0.6-2.8% w / w; a second herbicide Tembotrione is present in an amount in the range from 18-26.8% w / w; a third herbicide Halosulfuron-methyl is present in an amount in the range from 10-13% w / w; and agriculturally acceptable excipient(s);b) Thiencarbazone-methyl is present in an amount in the range from 2-3% w / w; a second herbicide Tembotrione is present in an amount in the range from 14-22% w / w; a third herbicide Nicosulfuron is present in an amount in the range from 6-11% w / w; and agriculturally acceptable excipient(s);c) Thiencarbazone-methyl is present in an amount in the range from 1 -3% w / w; a second herbicide Topramezone is present in an amount in the range from 4-8% w / w; a third herbicide Halosulfuron-methyl is present in an amount in the range from 12-13.5% w / w; and agriculturally acceptable excipient(s);d) Thiencarbazone-methyl is present in an amount in the range from 2-3% w / w; a second herbicide Topramezone is present in an amount in the range from 4-6% w / w; a third herbicide Nicosulfuron is present in an amount in the range from 6-12% w / w; and agriculturally acceptable excipient(s);e) Thiencarbazone-methyl is present in an amount in the range from 0.7-1.2% w / w; a second herbicide Sulcotrione is present in an amount in the range from 20-35% w / w; a third herbicide Halosulfuron-methyl is present in an amount in the range from 4-6% w / w; and agriculturally acceptable excipient(s);f) Thiencarbazone-methyl is present in an amount in the range from 1 -2% w / w; a second herbicide Sulcotrione is present in an amount in the range from 35-45% w / w; a third herbicide Nicosulfuron is present in an amount in the range from 4-6% w / w; and agriculturally acceptable excipient(s);g) Thiencarbazone-methyl is present in an amount in the range from 0.5-1.5% w / w; a second herbicide Mesotrione is present in an amount in the range from 20-30% w / w; a third herbicide Halosulfuron-methyl is present in an amount in the range from 4- 6.5% w / w; and agriculturally acceptable excipient(s);h) Thiencarbazone-methyl is present in an amount in the range from 1-1.4% w / w; a second herbicide Mesotrione is present in an amount in the range from 7.5-10% w / w; a third herbicide Nicosulfuron is present in an amount in the range from 4-5% w / w; and agriculturally acceptable excipient(s).

5. The synergistic ternary herbicidal compositions as claimed in claim 1, wherein the compositions are formulated as Capsule suspension (CS), Dispersible concentrate (DC), Dustable powder (DP), Dry flowable (DF), Emulsifiable concentrate (EC), Emulsifiable granule (EG), Emulsion water-in-oil (EO), Emulsifiable powder (EP), Emulsion oil-in-water (EW), Granules (GR), Micro-emulsion (ME), Oil-dispersion (OD), Oil miscible flowable concentrate (OF), Oil miscible liquid (OL), Oil dispersible powder (OP), Suspension concentrate (SC), Suspension concentrate for direct application (SD), Suspo-emulsion (SE), Water soluble granule (SG), Soluble concentrate (SL), Spreading oil (SO), Water soluble powder (SP), Ultra-low volume (ULV) suspension, Ultra-low volume (ULV) liquid, Water dispersible granules (WDG / WG), Wettable powder (WP), a mixed formulation of CS and SC (ZC) or a mixed formulation of CS and SE (ZE), a mixed formulation of CS and EW (ZW).

6. The synergistic ternary herbicidal compositions as claimed in claim 1, wherein the agriculturally acceptable excipients are selected from the group comprising of dispersing agent, wetting agent, antifoaming / defoaming agent, emulsifying agent, anti- caking agent, safener and filler.

7. The synergistic ternary herbicidal compositions as claimed in claim 6, wherein, a) the dispersing agent, is selected from the group comprising sodium salt of naphthalene sulfonate condensate, sodium polycarboxylate, kraft lignin polymer, alkyl polyethoxyethanol phosphate ester, proprietary blends of polycarboxylate, polymethyl methacrylate-polyethylene glycol graft copolymer, ethoxylated tristyrylphenol, tri styrylphenol phosphate, acrylate copolymer liquid dispersant, condensed methyl naphthalene sulfonate sodium salt, acrylate copolymer grafted with PEG, polyoxy ethylene alkyl aryl phosphate amine salt, poly-carboxylate dispersant, modified styrene acrylic polymeric dispersant, sodium lignosulphonate, modified sodium lignosulphonate or a combination thereof, and present in an amount in the range from 0.1 to 20% w / w;b) the wetting agent, is selected from the group comprising sodium isopropyl naphthalene sulfonate, sodium alkyl naphthalene sulfonate blend, polyoxyethylene alkyl ether, Adsee 2610 (non-ionic proprietary blend of supplier), polyalkylene oxide block copolymer, ethoxylated tristyrylphenol, sodium butyl naphthalene sulfonate, alkylaryl sulfonate, sodium alkyl dibutyl naphthalene sulfonate, dicotyl sulfosuccinate, sodium dioctyl sulphosuccinate, or a combination thereof and present in an amount in the range from 0.1-10% w / w;c) the antifoaming / defoaming agent, is selected from the group comprising polydimethylsiloxane emulsion, powdered silicone antifoam, silicon antifoam emulsion, silicon emulsion, poly siloxane emulsion or a combination thereof and present in an amount in the range from 0.01 to 2% w / w;d) the emulsifier is selected from the group comprising ethoxylates of sorbitan esters, castor oil ethoxylate 40 moles, calcium alkyl benzene sulfonate sodium salt, ethoxylated trystrylphenol, butylated copolymer, EO / PO block copolymer or a combination thereof, and present in an amount in the range from 5 to 15% w / w; e) the anticaking agent is selected from the group comprising precipitated silica, urea formaldehyde resin, organic bentonite, polyolefin particles, fumed silica or a combination thereof, and present in an amount in the range from 0.1 to 10% w / w;f) the safener is selected from the group comprising cyprosulfamide, isoxadifen-ethyl, mefenpyr-di ethyl or a combination thereof and present in an amount in the range from 0.01 to 20% w / w; andg) the filler, is selected from the group comprising, silica, precipitated silica, sodium bicarbonate, china clay, methyl soyate, sodium sulphate, sodium lignosulphonate, lactose, lactose anhydrous, bentonite clay, kaolin, diatomaceous earth or a combination thereof and present in an amount quantity sufficient (q.s.) to make 100% w / w formulations.

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