A liquid herbicidal composition

Abstract

The present invention relates to a liquid herbicidal composition. In particular, the present invention relates to a liquid herbicidal composition comprising triazolone herbicide and at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; a process for preparing said composition; and a method for controlling weeds using the same.

Description

[0001] A LIQUID HERBICIDAL COMPOSITION

[0002] Field of invention

[0003] The present invention relates to a liquid herbicidal composition. In particular, the present invention relates to a liquid herbicidal composition comprising triazolone herbicide and at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; a process for preparing said composition; and a method for controlling weeds using the same.

[0004] Background

[0005] Weeds largely affect the yield of crops by competing for air, water, sunlight, and nutrients. The weed-crop competition is critical for crop development, herbicides play an important role in weed control on agricultural and non-agricultural surfaces. It is well known that effective weed control improves crop yield significantly. Many a time farmers face complex weed situations where weeds may not be controlled with just one herbicide. In such a scenario combination of two or more herbicides is required as it provides a broader spectrum of control and resistance management. However, formulation development for combinations of different active ingredients is challenging, as each active ingredient exhibits different physicochemical properties such as solubility, density, polymorphism, and thermal stability, and may have incompatibility with other active ingredients. Often it requires a large number of experiments to come up with a stable formulation that overcomes the aforementioned challenges.

[0006] Triazolone herbicides, triketone herbicides, and chloroacetamide herbicides are well known systemic herbicides and provide desirable results when used together in a combination.

[0007] US11917994 discloses a tank mixture comprising amicarbazone, mesotrione, and s-metolachlor. However, said patent does not disclose a stable premix composition comprising triazolone herbicide, triketone herbicides, and chloroacetamide herbicide. However, premix compositions are preferred over tank mixes for the convenience they provide in handling, transportation, and storage. The premix composition reduces environmental impact, requires lower active substance doses, and shows consistent efficacy. The development of premix compositions having two or more active ingredients has its challenges, such as the incompatibility of active ingredients leading to precipitation, agglomerated particles or crystals formation, which may choke the nozzle of the applicator while applying the composition, or the composition when sprayed, is not uniformly applied. Inventors of the present invention have overcome all the challenges discussed above and have developed a liquid herbicidal composition comprising triazolone herbicide and at least one coherbicide that exhibits storage stability.

[0008] Summary of Invention

[0009] In an aspect of the present invention, there is provided a liquid herbicidal composition comprising

[0010] a) triazolone herbicide;

[0011] b) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0012] c) an organic solvent selected from a group comprising an alcohol, an amide solvent or a mixture thereof.

[0013] In another aspect of the present invention, there is provided a liquid herbicidal composition comprising

[0014] a) amicarbazone;

[0015] b) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0016] c) an organic solvent selected from a group comprising an alcohol, an amide solvent or a mixture thereof.

[0017] In yet another aspect of the present invention, there is provided a liquid herbicidal composition comprising a) amicarbazone;

[0018] b) triketone herbicide;

[0019] c) chloroacetamide herbicide; and

[0020] d) an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof.

[0021] In yet another aspect of the present invention, it provides a process for preparation of a liquid herbicidal composition comprising:

[0022] a) triazolone herbicide;

[0023] b) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0024] c) an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof.

[0025] wherein said process includes a step of preparing a mixture comprising triazolone herbicide, at least one co-herbicide, and said organic solvent.

[0026] In another aspect, the present invention provides a method of controlling weeds comprising applying to the plants or to the locus, thereof an effective amount of a liquid herbicidal composition comprising

[0027] (I) triazolone herbicide;

[0028] (II) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0029] (III) an organic solvent selected from a group comprising an alcohol, an amide solvent or a mixture thereof.

[0030] In yet another aspect, the present invention provides a kit comprising comprising (I) triazolone herbicide;

[0031] (II) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0032] (III) an organic solvent selected from a group comprising an alcohol, an amide solvent or a mixture thereof. Detailed Description of Invention

[0033] For convenience, before further description of the present invention, certain terms employed in the specification, examples are described here. These definitions should be read in light of the remainder of the disclosure and understood as by a person of skill in the art. 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. The terms used throughout this specification are defined as follows, unless otherwise limited in specific instances.

[0034] The terms used herein are defined as follows.

[0035] As used in the specification and the claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise.

[0036] The term "about" shall be interpreted to mean "approximately" or "reasonably close to" and any statistically insignificant variations therefrom. The term refers to a measurable value such as a parameter, an amount, a temporal duration, and the like and is meant to include variations of + / -15% or less, specifically variations of + / -10% or less, more specifically variations of + / -5% or less, even more specifically variations of + / -1% or less, and still more specifically variations of + / -0.1% or less of and from the particularly recited value, in so far as such variations are appropriate to perform in the disclosure described herein.

[0037] As used herein, the terms “comprising” “including,” “having,” “containing,” “involving,” and the like are to be understood to be open-ended, i.e., to mean including but not limited to.

[0038] The terms “preferred” and “preferably” refer to embodiments of the invention that may afford certain benefits, under certain circumstances. In an embodiment, the aspects and embodiments described herein shall also be interpreted to replace the clause “comprising” with either “consisting of’ or with “consisting essentially of’ or with “consisting substantially of’. The use of any and all examples, or exemplary language (e.g., “such as”), is intended merely to better illustrate the disclosure and does not pose a limitation on the scope of the disclosure unless otherwise claimed. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the disclosure as used herein.

[0039] While the disclosure has been described with reference to an exemplary embodiment, it will be understood by those skilled in the art that various changes may be made, and equivalents may be substituted for elements thereof without departing from the scope of the disclosure. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the disclosure without departing from the essential scope thereof. Therefore, it is intended that the disclosure is not limited to the particular embodiment disclosed as the best mode contemplated for carrying out this disclosure, but that the disclosure will include all embodiments falling within the scope of the appended claims.

[0040] The term “herbicidally active ingredient” or “herbicide” includes herbicidally active ingredient, its salt, isomers or derivatives thereof.

[0041] It should be noted that, as used herein, "derivative" or "analogue" of a molecule refers to a portion derived from or a modified version of the molecule.

[0042] The term "control" relates to a weed, includes control of the weed, as well as protecting a plant, a portion of the plant, or a plant seed from attack or invasion by said weed.

[0043] As used herein, “effective amount” is an amount of active ingredient, such as the disclosed combinations, which has an adverse effect on the weeds and / or which controls the weeds in a plant. The adverse effect can include killing of the weeds (herbicidal), preventing growth of the weeds, blocking of biosynthetic pathway(s), or a combination thereof.

[0044] As used herein, the term “agrochemical” is understood to denote an agricultural chemical such as pesticides, fungicides, insecticides, acaricides, herbicides, nematicides, plant growth regulators and can be used interchangeably. As used herein, an “agriculturally acceptable salt” means a salt which is accepted for use in agricultural or horticultural use.

[0045] With respect to the present disclosure the terms “composition” and “formulation” are used interchangeably.

[0046] As used herein, the term “stable” refers to chemical and / or physical stabilization of an active compound (e.g., herbicide).

[0047] The term “locus” as used herein refers to the vicinity, area, or place in which the plants are growing, where plant propagation materials of the plants are sown (e.g., placed into the soil), and / or where the plant propagation materials of the plants will be sown.

[0048] Premixes are professionally formulated products that ensure consistent mixture of active ingredients, reducing the risk of incorrect proportions or incompatibility issues. Using premix formulations simplify the process for end-users. The inventors of the present invention have developed a stable premix liquid composition comprising triazolone herbicide and at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide.

[0049] In an aspect of the present invention, there is provided a liquid herbicidal composition comprising

[0050] a) triazolone herbicide;

[0051] b) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0052] c) an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof.

[0053] In an embodiment, the organic solvent is selected from aliphatic alcohol or aromatic alcohol.

[0054] In an embodiment, the organic solvent is an amide solvent such as N, N-dimethyldecanoic acid amide / N, N-dimethyldecanamide. In an embodiment, the organic solvent is selected from group comprising of n-butanol, alpha-4 dimethylbenzyl alcohol, benzyl alcohol, 2-phenyl-2-propanol, 1-phenylethanol and N, N-dimethyldecanamide.

[0055] In an embodiment, the present invention provides a liquid herbicidal composition comprising

[0056] a) triazolone herbicide;

[0057] b) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0058] c) an aromatic alcohol.

[0059] In an embodiment, the triazolone herbicide is selected from the group comprising of, but not limited to, ipfencarbazone, bencarbazone, thiencarbazone-methyl, propoxycarbazone, flucarbazone-sodium, carfentrazone-ethyl, thiencarbazone, sulfentrazone, flucarbazone, carfentrazone, amicarbazone, or salts thereof.

[0060] In another embodiment, the triazolone herbicide is selected from amicarbazone, thiencarbazone, sulfentrazone, or salts thereof.

[0061] In yet another embodiment, the triazolone herbicide is amicarbazone or salts thereof.

[0062] In another aspect of the present invention, there is provided a liquid herbicidal composition comprising

[0063] a) amicarbazone;

[0064] b) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0065] c) an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof.

[0066] In an embodiment, the organic solvent is present in liquid herbicidal composition in an amount ranging from about 1% w / w to about 40% w / w. Ina another embodiment, the organic solvent present in liquid herbicidal composition is an aromatic alcohol.

[0067] In an embodiment, there is provided a liquid herbicidal composition comprising a) amicarbazone;

[0068] b) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0069] c) an aromatic alcohol.

[0070] In an embodiment, amicarbazone is present in liquid herbicidal composition in an amount ranging from about 1% w / w to about 30% w / w.

[0071] In an embodiment, the triazolone herbicide is present in liquid herbicidal composition in an amount ranging from about 1% w / w to about 30% w / w.

[0072] In another embodiment, the triazolone herbicide is present in liquid herbicidal composition in an amount ranging from about 1% w / w to about 20% w / w.

[0073] In an embodiment, the co-herbicide is present in liquid herbicidal composition in an amount ranging from about 1% w / w to about 60% w / w.

[0074] In an embodiment, the co-herbicide is present in liquid herbicidal composition in an amount ranging from about 1% w / w to about 50% w / w.

[0075] In an embodiment, there is provided a liquid herbicidal composition comprising a) from about 1% w / w to about 30% w / w amicarbazone;

[0076] b) from about 1% w / w to about 60% w / w at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0077] c) from about 1% w / w to about 40% w / w of an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof

[0078] In an embodiment, there is provided a liquid herbicidal composition comprising a) from about 1% w / w to about 30% w / w amicarbazone; b) from about 1% w / w to about 60% w / w at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0079] c) an aromatic alcohol.

[0080] In an embodiment, the co-herbicide is triketone herbicide.

[0081] In an embodiment, the triketone herbicide is selected from the group comprising, but not limited to, benquitrione, benzobicyclon, bicyclopyrone, dioxopyritrione, fenquinotrione, ketospiradox, lancotrione, mesotrione, quintrione, sulcotrione, tefuryltrione, tembotrione, or salts thereof.

[0082] In another embodiment, the triketone herbicide is selected from mesotrione, sulcotrione or tembotrione, or salts thereof.

[0083] In another embodiment, the triketone herbicide is mesotrione, or salts thereof. In another embodiment, the triketone herbicide is present in liquid herbicidal composition in an amount ranging from about 1% w / w to about 20% w / w.

[0084] In another embodiment, the triketone herbicide is present in liquid herbicidal composition in an amount ranging from about 1% w / w to about 10% w / w.

[0085] In an embodiment, the co-herbicide is chloroacetamide herbicide.

[0086] In an embodiment, the chloroacetamide herbicide is selected from group comprising, but not limited to, acetochlor, alachlor, allidochlor, amidochlor, butachlor, butenachlor, CDEA (2-chloro-N,N-diethylacetamide), delachlor, diethatyl, dimethachlor, dimethenamid, dimethenamid-P, ethachlor, ethaprochlor, metazachlor, metolachlor, S-metolachlor, pethoxamid, pretilachlor, propachlor, propisochlor, prynachlor, terbuchlor, thenylchlor, xylachlor or salts thereof.

[0087] In another embodiment, the chloroacetamide herbicide is selected from a group comprising metolachlor, S-metolachlor, acetochlor or salts thereof.

[0088] In an embodiment, the chloroacetamide herbicide is present in liquid herbicidal composition in an amount ranging from about 1% w / w to about 60% w / w. In yet another embodiment, the chloroacetamide herbicide is present in liquid herbicidal composition in an amount ranging from about 1% w / w to about 50% w / w.

[0089] In yet another embodiment, the chloroacetamide herbicide is present in liquid herbicidal composition in an amount ranging from about 1% w / w to about 45% w / w.

[0090] In an embodiment, the aromatic alcohol is selected from group comprising of, but not limited to, alpha-4 dimethylbenzyl alcohol, benzyl alcohol, 2-phenyl-2-propanol, and 1-phenylethanol.

[0091] In an embodiment, the aromatic alcohol is benzyl alcohol.

[0092] In an embodiment, the aromatic alcohol is present in liquid herbicidal composition in an amount ranging from about 1% w / w to about 40% w / w.

[0093] In an embodiment, the aromatic alcohol is present in liquid herbicidal composition in an amount ranging from about 1% w / w to about 30% w / w.

[0094] In an embodiment, the aromatic alcohol is present in liquid herbicidal composition in an amount ranging from about 1% w / w to about 20% w / w.

[0095] In an embodiment, there is provided a liquid herbicidal composition comprising a) triazolone herbicide;

[0096] b) triketone herbicide; and

[0097] c) an aromatic alcohol

[0098] In an embodiment, there is provided a liquid herbicidal composition comprising a) from about 1% w / w to about 30% w / w triazolone herbicide;

[0099] b) from about 1% w / w to about 20% w / w triketone herbicide; and

[0100] c) from about 1% w / w to about 40% w / w aromatic alcohol

[0101] In an embodiment, there is provided a liquid herbicidal composition comprising a) amicarbazone; b) mesotrione; and

[0102] c) benzyl alcohol

[0103] In a preferred embodiment, there is provided a liquid herbicidal composition comprising

[0104] a) from about 1% w / w to about 30% w / w amicarbazone;

[0105] b) from about 1% w / w to about 20% w / w mesotrione; and

[0106] c) from about 1% w / w to about 40% w / w benzyl alcohol

[0107] In another embodiment, the organic solvent present in liquid herbicidal composition is an aliphatic alcohol such as n-butanol.

[0108] In an embodiment, there is provided a liquid herbicidal composition comprising a) from about 1% w / w to about 30% w / w amicarbazone;

[0109] b) from about 1% w / w to about 60% w / w at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0110] c) n-butanol.

[0111] In an embodiment, there is provided a liquid herbicidal composition comprising a) from about 1% w / w to about 30% w / w triazol one herbicide;

[0112] b) from about 1% w / w to about 20% w / w triketone herbicide; and

[0113] c) from about 1% w / w to about 40% w / w n-butanol

[0114] In an embodiment, there is provided a liquid herbicidal composition comprising a) amicarbazone;

[0115] b) mesotrione; and

[0116] c) n-butanol

[0117] In a preferred embodiment, there is provided a liquid herbicidal composition comprising

[0118] a) from about 1% w / w to about 30% w / w amicarbazone;

[0119] b) from about 1% w / w to about 20% w / w mesotrione; and c) from about 1% w / w to about 40% w / w n-butanol

[0120] In yet another embodiment, the organic solvent present in liquid herbicidal composition is an amide solvent such as N,N-dimethyldecanamide.

[0121] In an embodiment, there is provided a liquid herbicidal composition comprising a) from about 1% w / w to about 30% w / w amicarbazone;

[0122] b) from about 1% w / w to about 60% w / w at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0123] c) N,N-dimethyldecanamide.

[0124] In an embodiment, there is provided a liquid herbicidal composition comprising a) from about 1% w / w to about 30% w / w triazolone herbicide;

[0125] b) from about 1% w / w to about 20% w / w triketone herbicide; and

[0126] c) from about 1% w / w to about 40% w / w N, N-dimethyldecanamide

[0127] In an embodiment, there is provided a liquid herbicidal composition comprising a) amicarbazone;

[0128] b) mesotrione; and

[0129] c) N, N-dimethyldecanamide

[0130] In a preferred embodiment, there is provided a liquid herbicidal composition comprising

[0131] a) from about 1% w / w to about 30% w / w amicarbazone;

[0132] b) from about 1% w / w to about 20% w / w mesotrione; and

[0133] c) from about 1% w / w to about 40% w / w N, N-dimethyldecanamide

[0134] In another embodiment, there is provided a liquid herbicidal composition comprising

[0135] a) triazolone herbicide;

[0136] b) chloroacetamide herbicide; and c) organic solvent selected from an alcohol, an amide solvent, or a mixture thereof

[0137] In an embodiment, there is provided a liquid herbicidal composition comprising a) from about 1% w / w to about 30% w / w triazol one herbicide;

[0138] b) from about 1% w / w to about 60% w / w chloroacetamide herbicide; and c) from about 1% w / w to about 40% w / w organic solvent selected from an alcohol, an amide solvent, or a mixture thereof

[0139] In another embodiment, there is provided a liquid herbicidal composition comprising

[0140] a) amicarbazone;

[0141] b) Metolachlor or S-metolachlor; and

[0142] c) benzyl alcohol

[0143] In a preferred embodiment, there is provided a liquid herbicidal composition comprising

[0144] a) from about 1% w / w to about 30% w / w amicarbazone;

[0145] b) from about 1% w / w to about 60% w / w metolachlor or S-metolachlor; and c) from about 1% w / w to about 40% w / w benzyl alcohol

[0146] In another embodiment, there is provided a liquid herbicidal composition comprising

[0147] a) amicarbazone;

[0148] b) Metolachlor or S-metolachlor; and

[0149] c) n-butanol

[0150] In a preferred embodiment, there is provided a liquid herbicidal composition comprising

[0151] a) from about 1% w / w to about 30% w / w amicarbazone;

[0152] b) from about 1% w / w to about 60% w / w Metolachlor or S-metolachlor; and c) from about 1% w / w to about 40% w / w n-butanol In another embodiment, there is provided a liquid herbicidal composition comprising

[0153] a) amicarbazone;

[0154] b) Metolachlor or S-metolachlor; and

[0155] c) N, N-dimethyldecanamide

[0156] In a preferred embodiment, there is provided a liquid herbicidal composition comprising

[0157] a) from about 1% w / w to about 30% w / w amicarbazone;

[0158] b) from about 1% w / w to about 60% w / w Metolachlor or S-metolachlor; and c) from about 1% w / w to about 40% w / w N, N-dimethyldecanamide

[0159] In another embodiment, there is provided a liquid herbicidal composition comprising

[0160] a) amicarbazone;

[0161] b) Metolachlor or S-metolachlor;

[0162] c) N, N-dimethyldecanamide; and

[0163] d) n-butanol

[0164] In a preferred embodiment, there is provided a liquid herbicidal composition comprising

[0165] a) from about 1% w / w to about 30% w / w amicarbazone;

[0166] b) from about 1% w / w to about 60% w / w Metolachlor or S-metolachlor; c) from about 1% w / w to about 40% w / w N, N-dimethyldecanamide; and d) from about 1% w / w to about 40% w / w n-butanol

[0167] In another embodiment, there is provided a liquid herbicidal composition comprising

[0168] a) triazolone herbicide;

[0169] b) triketone herbicide; c) chloroacetamide herbicide; and

[0170] d) an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof

[0171] In an embodiment, the triazolone herbicide is amicarbazone or salts thereof.

[0172] In another embodiment, the triketone herbicide is mesotrione or salts thereof. In yet another embodiment, the chloroacetamide herbicide is selected from group comprising of acetochlor, metolachlor, S-metolachlor or salts thereof.

[0173] In an embodiment, there is provided a liquid herbicidal composition comprising a) from about 1% w / w to about 30% w / w amicarbazone;

[0174] b) from about 1% w / w to about 20% w / w mesotrione; and / or from about 1% w / w to about 60% w / w Metolachlor or S-metolachlor; and

[0175] c) from about 1% w / w to about 40% w / w of an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof. In another embodiment, there is provided a liquid herbicidal composition comprising

[0176] a) triazolone herbicide;

[0177] b) triketone herbicide;

[0178] c) chloroacetamide herbicide; and

[0179] d) an aromatic alcohol.

[0180] In an embodiment, there is provided a liquid herbicidal composition comprising a) amicarbazone;

[0181] b) triketone herbicide;

[0182] c) chloroacetamide herbicide; and

[0183] d) an aromatic alcohol.

[0184] In another embodiment, there is provided a liquid herbicidal composition comprising a) from about 1% w / w to about 30% w / w triazolone herbicide;

[0185] b) from about 1% w / w to about 20% w / w triketone herbicide

[0186] c) from about 1% w / w to about 60% w / w chloroacetamide herbicide; and d) from about 1 w / w% to about 40% w / w aromatic alcohol.

[0187] In another embodiment, there is provided a liquid herbicidal composition comprising

[0188] a) amicarbazone;

[0189] b) mesotrione;

[0190] c) metolachlor or S-metolachlor; and

[0191] d) benzyl alcohol.

[0192] In another preferred embodiment, there is provided a liquid herbicidal composition comprising

[0193] a) from about 1% w / w to about 40% w / w amicarbazone;

[0194] b) from about 1% w / w to about 30% w / w mesotrione;

[0195] c) from about 1% w / w to about 60% w / w metolachlor or S-metolachlor; and d) from about 1 w / w% to about 30% w / w benzyl alcohol.

[0196] In another embodiment, there is provided a liquid herbicidal composition comprising

[0197] a) amicarbazone;

[0198] b) mesotrione;

[0199] c) metolachlor or S-metolachlor; and

[0200] d) n-butanol.

[0201] In another preferred embodiment, there is provided a liquid herbicidal composition comprising

[0202] a) from about 1% w / w to about 40% w / w amicarbazone;

[0203] b) from about 1% w / w to about 30% w / w mesotrione; c) from about 1% w / w to about 60% w / w metolachlor or S-metolachlor; and d) from about 1 w / w% to about 30% w / w n-butanol.

[0204] In another embodiment, there is provided a liquid herbicidal composition comprising

[0205] a) amicarbazone;

[0206] b) mesotrione;

[0207] c) metolachlor or S-metolachlor; and

[0208] d) N, N-dimethyldecanamide.

[0209] In another preferred embodiment, there is provided a liquid herbicidal composition comprising

[0210] a) from about 1% w / w to about 40% w / w amicarbazone;

[0211] b) from about 1% w / w to about 30% w / w mesotrione;

[0212] c) from about 1% w / w to about 60% w / w metolachlor or S-metolachlor; and d) from about 1 w / w% to about 30% w / w N,N-dimethyldecanamide.

[0213] In another preferred embodiment, there is provided a liquid herbicidal composition comprising

[0214] a) from about 1% w / w to about 40% w / w amicarbazone;

[0215] b) from about 1% w / w to about 30% w / w mesotrione;

[0216] c) from about 1% w / w to about 60% w / w metolachlor or S-metolachlor; d) from about 1 w / w% to about 30% w / w N, N-dimethyldecanamide; and e) from about 1 w / w% to about 30% w / w n-butanol

[0217] In an embodiment, the liquid herbicidal composition may further comprise a safener.

[0218] The safener is selected from, but not limited to, a group comprising benoxacor, dichlormid, metcamifen, fluxofenim, cloquintocet, cyprosulfamide, fenclorim, mefenpyr and furilazole. In an embodiment, the liquid herbicidal composition comprises benoxacor as a safener.

[0219] In an embodiment, the liquid herbicidal composition may further comprise agriculturally acceptable excipient.

[0220] In an embodiment, the agriculturally acceptable excipient can be selected from one or more adjuvants, diluents, emulsifiers, fillers, anti-settling agents, defoaming agents, thickening agents, humectants, anti-freezing agents, freezing agents, surfactants, preservatives, coloring agents, pH adjusting agents, wetting agents, dispersing agents (dispersants), wetting cum dispersing agents, biocide and solvent. However, it should be appreciated that any other agriculturally acceptable excipients, as known to a person skilled in the art, may be used to serve its intended purpose.

[0221] In an embodiment, the agriculturally acceptable excipient is selected from anionic surfactants, cationic surfactants, non-ionic surfactants, amphoteric surfactants or blend thereof.

[0222] Examples of anionic surfactants include: anionic derivatives of fatty alcohols having 10-24 carbon atoms in the form of ether carboxylates, sulfonates, sulfates, and phosphates, and their inorganic salts (e.g., alkali metal and alkaline earth metal salts) and organic salts (e.g., salts based on amine or alkanolamine); anionic derivatives of copolymers consisting of EO(ethylene oxide), PO (propylene oxide) and / or BO (butylene oxide) units, in the form of ether carboxylates, sulfonates, sulfates, and phosphates, and their inorganic salts (e.g., alkali metal and alkaline earth metal salts) and organic salts (e.g., salts based on amine or alkanolamine); derivatives of alkylene oxide adducts of alcohols, in the form of ether carboxylates, sulfonates, sulfates and phosphates, and their inorganic salts (e.g., alkali metal and alkaline earth metal salts) and organic salts (e.g., salts based on amine or alkanolamine); derivatives of fatty acid alkoxylates, in the form of ether carboxylates, sulfonates, sulfates, and phosphates, and their inorganic salts (e.g., alkali metal and alkaline earth metal salts) and organic salts (e.g., salts based on amine or alkanolamine); alkyl ether phosphate, alkyl sulfosuccinate monoester and diester salts.

[0223] Examples of cationic or zwitterionic surfactants may be selected from alkylene oxide adducts of fatty amines, quaternary ammonium compounds having 8 to 22 carbon atoms (C8-C22), surface-active zwitterionic compounds such as taurides, betaines and sulfobetaines.

[0224] Examples of non-ionic surfactants are: alkylpolyglycosides, alkyl glucamide, alkyl amine oxides having C8 to C20 carbon atoms, alcohol ethoxylate, alcohol polyglycol ether, alkyl polyethylene glycol ether, fatty acid methyl ester, sorbitan ester and ethoxylated sorbitan ester, ethoxylated alkylphenol, ethoxylated tri styrylphenol and alkyl amide, fatty alcohols having 10-24 carbon atoms with 0-60 EO and / or 0-20 PO and / or 0-15 BO in any order; fatty acid alkoxylates and triglyceride alkoxylates; fatty acid amide alkoxylates; alkylene oxide adducts of alkynediols; sugar derivatives such as amino sugars and amido sugars; polyacrylic and polymethacrylic derivatives; polyamides such as modified gelatins or derivatized polyaspartic acid; surfactant polyvinyl compounds such as modified PVP; polyol-based alkylene oxide adducts; polyglycerides and derivatives thereof.

[0225] Examples of amphoteric surfactants are selected from the group comprising but not limited to, esters of alkoxylated diethylethanolamine, sodium-neutralized styrene / acrylic acid copolymer, polyoxyethylene iethylethanolamine monotrimerate, nonionic polyalkylene glycol ether, alkylbetaines, cocoamidopropylbetaine, cocoamphodiacetates, cocoiminodipropionate, dodecyliminodipropionate and polyalkylene oxide block copolymer.

[0226] In an embodiment, a dispersant (dispersing agent) is used, selected from polymeric ester dispersants, polymer dispersants, polymeric amphoteric dispersants, acrylic (type) co-polymer, modified styrene acrylic copolymer dispersants and / or their combinations. Polymeric Ester Dispersant -Atlox 4916 (Croda), Polymer Dispersant - Atlox 4912 or Atlox 4914 (Croda), Polymeric amphoteric dispersants - Atlox® 4915 (Croda), Acrylic (type) co-polymer - Envi-pol® 871 (Lamberti SPA), Modified styrene acrylic copolymer dispersant - Atlox Metasperse 550S, Atlox Metasperse 500L, or Atlox Metasperse 100L or their combinations may also be used.

[0227] The amount of dispersant is in an amount ranging from about 0.1% w / w to about 10% w / w, preferably from about 2% w / w to about 8% w / w.

[0228] In another embodiment, an emulsifier is used, selected from non-ionic surfactant listed above.

[0229] Alcohol polyglycol ether- Emulan® LVA (BASF), Emulan® TXI (BASF), Ethoxylated alcohol - Lutensol® TO 8 (BASF), Alkyl polyethylene glycol ether-Lutensol XL 40 / 50 / 60 / 70 / 79 / 80 / 89 / 90 (BASF), Lutensol XP 30 / 40 / 50 / 60 / 69 / 70 / 79 / 80 / 89 / 99 / 100 or their combinations may also be used.

[0230] The amount of dispersant is in an amount ranging from about 0.1% w / w to about 5% w / w.

[0231] In another embodiment, a thickener may be used, selected from group comprising but not limited to, molasses, granulated sugar, alginates, karaya gum, jaguar gum, tragacanth gum, polysaccharide gum, mucilage, xanthan gum, or combination thereof.

[0232] In another embodiment, the binder may be selected from silicates such as magnesium aluminum silicate, polyvinyl acetates, polyvinyl acetate copolymers, polyvinyl alcohols, polyvinyl alcohol copolymers, celluloses, including ethylcelluloses and methylcelluloses, hydroxymethyl celluloses, hydroxypropylcelluloses, hydroxymethylpropyl -celluloses, sipolyvinylpyrolidones, dextrins, malto-dextrins, polysaccharides, fats, oils, proteins, gum arabics, shellacs, vinylidene chloride, vinylidene chloride copolymers, calcium lignosulfonates, acrylic copolymers, starches, polyvinylacrylates, zeins, gelatin, carboxymethylcellulose, chitosan, polyethylene oxide, acrylamide polymers and copolymers, polyhydroxyethyl acrylate, methylacrylimide monomers, alginate, ethylcellulose, polychloroprene, and syrups or mixtures thereof; polymers and copolymers of vinyl acetate, methyl cellulose, vinylidene chloride, acrylic, cellulose, polyvinylpyrrolidone, and polysaccharide; polymers and copolymers of vinylidene chloride and vinyl acetate-ethylene copolymers; combinations of polyvinyl alcohol and sucrose; plasticizers such as glycerol, propylene glycol, and polyglycols.

[0233] In yet another embodiment, an anti-settling agent used is selected from the group comprising of but not limited to, magnesium aluminium silicate, tromethamine magnesium aluminium silicate, hydrated magnesium aluminosilicate, montmorillonite clay and the like.

[0234] In yet another embodiment, a defoaming agent may be used, selected from the group comprising of but not limited to, polydimethoxysiloxane, polydimethylsiloxane, alkyl polyacrylates, castor oil, fatty acids, fatty acid esters, fatty acid sulfate, fatty alcohol, fatty alcohol esters, fatty alcohol sulfates, foot olive oil, mono & di glyceride, paraffin oil, paraffin wax, poly propylene glycol, silicone oil, vegetable fats, vegetable fats sulfates, vegetable oil, vegetable oil sulfates, vegetable wax, vegetable wax sulfates, agents based on silicon or magnesium stearate, and a blend of maltodextrin, and methylated silica.

[0235] In yet another embodiment, an antifreeze agent may be used, selected from the group comprising, but not limited to, ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butanediol, 1,3 -butanediol, 1,4-butanediol, 1,4-pentanediol, 3-methyl-1,5-pentanediol, 2,3 -dimethyl-2, 3 -butanediol, trimethylol propane, mannitol, sorbitol, glycerol, pentaerythritol, 1,4-cyclohexanedimethanol, xylenol, bisphenols such as bisphenol A or the like. In addition, ether alcohols such as diethylene glycol, triethylene glycol, tetraethylene glycol, polyoxyethylene or polyoxypropylene glycols of molecular weight up to about 4000, diethylene glycol monomethylether, diethylene glycol monoethyl ether, triethylene glycol monomethylether, butoxyethanol, butylene glycol monobutylether, dipentaerythritol, tripentaerythritol, tetrapentaerythritol, diglycerol, triglycerol, tetraglycerol, pentaglycerol, hexaglycerol, heptaglycerol, and octaglycerol. In another embodiment, a biocide may be used that is selected from benzothiazoles, 1,2- benzisothiazolin-3-one, sodium dichloro-s-triazinetrione, sodium benzoate, potassium sorbate, 1,2-phenyl-isothiazolin-3-one, inter chloroxylenol paraoxybenzoate butyl.

[0236] In another embodiment, diluent is water.

[0237] In an embodiment, there is provided a liquid herbicidal composition comprising a) from about 1% w / w to about 30% w / w amicarbazone;

[0238] b) from about 1% w / w to about 20% w / w mesotrione; and / or from about 1% w / w to about 60% w / w metolachlor or S-metolachlor;

[0239] c) from about 1% w / w to about 40% w / w of an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof; and d) at least one agrochemical excipient.

[0240] In an embodiment, the liquid herbicidal formulation in the form of a suspension concentrates, a suspo-emulsion concentrate, a tank mix composition, or a ready -to-use liquid composition.

[0241] In yet another aspect, the present invention provides a process for preparation of a liquid herbicidal composition comprising

[0242] a) triazolone herbicide;

[0243] b) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0244] c) an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof.

[0245] wherein said process includes a step of preparing a mixture comprising triazolone herbicide, at least one co-herbicide, and said solvent.

[0246] In an embodiment of the present invention, there is provided a process for preparation of a liquid herbicidal composition comprising

[0247] I) triazolone herbicide; II) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0248] III) an alcohol selected from aliphatic or aromatic alcohol

[0249] wherein said process includes a step of preparing a mixture comprising triazolone herbicide, at least one co-herbicide, and alcohol.

[0250] In an embodiment of the present invention, there is provided a process for preparation of a liquid herbicidal composition comprising

[0251] I) triazolone herbicide;

[0252] II) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0253] III) an aromatic alcohol

[0254] wherein said process includes a step of preparing a mixture comprising triazolone herbicide, at least one co-herbicide, and an aromatic alcohol.

[0255] In an embodiment of the present invention, there is provided a process for preparation of a liquid herbicidal composition comprising

[0256] I) triazolone herbicide;

[0257] II) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0258] III) an amide solvent;

[0259] wherein said process includes a step of preparing a mixture comprising triazolone herbicide, at least one co-herbicide, and amide solvent.

[0260] In an embodiment, there is provided a process for preparation of a liquid herbicidal composition comprising

[0261] I) triazolone herbicide;

[0262] II) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; III) an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof; and

[0263] IV) at least one agrochemical excipient

[0264] wherein said process comprises steps of

[0265] a) preparing an oil phase comprising triazolone herbicide and said organic solvent;

[0266] b) preparing an aqueous phase comprising at least one agrochemical excipient; c) mixing oil phase of step a) with aqueous phase of step b) to obtain the liquid herbicidal composition

[0267] wherein said oil phase of step a) or aqueous phase of step b) comprises at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide. In an embodiment, the oil phase of step a) comprises chloroacetamide herbicide. In another embodiment, the aqueous phase of step b) comprises triketone herbicide. In another embodiment, the triketone herbicide is selected from the group comprising benquitrione, benzobicyclon, bicyclopyrone, dioxopyritrione, fenquinotrione, ketospiradox, lancotrione, mesotrione, quintrione, sulcotrione, tefuryltrione, tembotrione, or salts thereof; and chloroacetamide herbicide is selected from group comprising acetochlor, alachlor, allidochlor, amidochlor, butachlor, butenachlor, CDEA (2-chloro-N,N-diethylacetamide), delachlor, diethatyl, dimethachlor, dimethenamid, dimethenamid-P, ethachlor, ethaprochlor, metazachlor, metolachlor, S-metolachlor, pethoxamid, pretilachlor, propachlor, propisochlor, prynachlor, terbuchlor, thenylchlor, xylachlor or salts thereof.

[0268] In an embodiment, there is provided a process for preparation of a liquid herbicidal composition comprising

[0269] I) triazolone herbicide;

[0270] II) triketone herbicide; III) an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof; and

[0271] IV) at least one agrochemical excipient

[0272] wherein said process comprises,

[0273] (a) preparing an oil phase comprising triazolone herbicide and said organic solvent

[0274] (b) preparing an aqueous phase comprising at least one agrochemical excipient and triketone herbicide; and

[0275] (c) mixing oil phase of step (a) with aqueous phase of step (b) to obtain herbicidal liquid composition

[0276] In another embodiment, there is provided a process for preparation of a liquid herbicidal composition comprising

[0277] I) triazolone herbicide;

[0278] II) chloroacetamide herbicide;

[0279] III) an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof; and

[0280] IV) at least one agrochemical excipient

[0281] wherein said process comprises,

[0282] (a) preparing an oil phase comprising triazolone herbicide, chloroacetamide herbicide and said organic solvent;

[0283] (b) preparing an aqueous phase comprising at least one agrochemical excipient;

[0284] and

[0285] (c) mixing oil phase of step (a) with aqueous phase of step (b) to obtain herbicidal liquid composition

[0286] In yet another embodiment, there is provided a process for preparation of liquid composition comprising

[0287] (I) triazolone herbicide, (II) triketone herbicide,

[0288] (III) chloroacetamide herbicide, and

[0289] (IV) an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof

[0290] wherein said process comprises,

[0291] (a) preparing an oil phase comprising triazolone herbicide, chloroacetamide herbicide and said organic solvent;

[0292] (b) preparing an aqueous phase comprising triketone herbicide; and

[0293] (c) mixing said oil phase of step (a) with aqueous phase of step (b) to obtain liquid composition.

[0294] In a preferred embodiment, triazolone herbicide is amicarbazone or salts thereof; triketone herbicide is mesotrione or salts thereof; and chloroacetamide herbicide is S-metolachlor or salts thereof.

[0295] In an embodiment, the triketone herbicide is mesotrione in the form of copper chelate.

[0296] The mesotrione copper chelate, for instance, can be prepared in-situ by treatment of mesotrione with copper sulfate.

[0297] In an embodiment, there is provided a process for preparation of a liquid herbicidal composition comprising

[0298] I) amicarbazone;

[0299] II) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide;

[0300] III) an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof; and

[0301] IV) at least one agrochemical excipient

[0302] wherein said process comprises steps of a) preparing an oil phase comprising amicarbazone and said organic solvent; b) preparing an aqueous phase comprising at least one agrochemical excipient; c) mixing oil phase of step a) with aqueous phase of step b) to obtain the liquid herbicidal composition;

[0303] wherein said oil phase of step a) or aqueous phase of step b) comprises at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide. In another aspect, the present invention provides a method of controlling weeds comprising applying to the plants or to the locus thereof, an effective amount of a liquid herbicidal composition comprising

[0304] (I) triazolone herbicide;

[0305] (II) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0306] (III) an organic solvent selected from group comprising of an alcohol, an amide solvent or mixture thereof.

[0307] In an embodiment, the present invention provides a method of controlling weeds comprising applying to the plants or the locus thereof, an effective amount of a liquid herbicidal composition comprising

[0308] a) amicarbazone;

[0309] b) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0310] c) an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof.

[0311] In an embodiment, the triketone herbicide is selected from the group comprising benquitrione, benzobicyclon, bicyclopyrone, dioxopyritrione, fenquinotrione, ketospiradox, lancotrione, mesotrione, quintrione, sulcotrione, tefuryltrione, tembotrione, or salts thereof; and chloroacetamide herbicide is selected from group comprising acetochlor, alachlor, allidochlor, amidochlor, butachlor, butenachlor, CDEA (2-chloro-N, N-diethylacetamide), delachlor, diethatyl, dimethachlor, dimethenamid, dimethenamid-P, ethachlor, ethaprochlor, metazachlor, metolachlor, S-metolachlor, pethoxamid, pretilachlor, propachlor, propisochlor, prynachlor, terbuchlor, thenylchlor, xylachlor or salts thereof.

[0312] In an embodiment, the present invention provides a method of controlling weeds comprising applying to the plants or the locus thereof, an effective amount of a liquid herbicidal composition comprising

[0313] a) triazolone herbicide;

[0314] b) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0315] c) an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof.

[0316] In another embodiment, the present invention provides a method of controlling weeds, comprising applying to the plants or to the locus thereof, an effective amount of a liquid herbicidal composition comprising

[0317] a) from about 1% w / w to about 30% w / w amicarbazone

[0318] b) from about 1% w / w to about 60% w / w at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0319] c) an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof.

[0320] In another embodiment, the present invention provides a method of controlling weeds, comprising applying to the plants or to the locus thereof, an effective amount of a liquid herbicidal composition comprising

[0321] I) amicarbazone;

[0322] II) mesotrione;

[0323] III) metolachlor or S-metolachlor; and

[0324] IV) an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof. In another embodiment, the present invention provides a method of controlling weeds, comprising applying to the plants or to the locus thereof, an effective amount of a liquid herbicidal composition comprising

[0325] I) amicarbazone;

[0326] II) mesotrione;

[0327] III) metolachlor or S-metolachlor; and

[0328] IV) benzyl alcohol.

[0329] In another embodiment, the present invention provides a method of controlling weeds, comprising applying to the plants or to the locus thereof, an effective amount of a liquid herbicidal composition comprising

[0330] I) amicarbazone;

[0331] II) mesotrione;

[0332] III) metolachlor or S-metolachlor; and

[0333] IV) n-butanol.

[0334] In another embodiment, the present invention provides a method of controlling weeds, comprising applying to the plants or to the locus thereof, an effective amount of a liquid herbicidal composition comprising

[0335] I) amicarbazone;

[0336] II) mesotrione;

[0337] III) metolachlor or S-metolachlor; and

[0338] IV) N, N-dimethyldecanamide.

[0339] In yet another aspect, the present invention provides a kit comprising comprising:

[0340] (I) triazolone herbicide;

[0341] (II) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; and

[0342] (III) an organic solvent selected from a group comprising an alcohol, an amide solvent or a mixture thereof. Examples

[0343] The following examples are presented to provide what is believed to be the most useful and readily understood description of procedures and conceptual aspects of this invention. The examples provided below are merely illustrative of the invention and are not intended to limit the same to disclosed embodiments. Variations and changes obvious to one skilled in the art are intended to be within the scope and nature of the invention.

[0344] General procedure for preparation of liquid herbicidal composition according to the present invention

[0345] Step a) Preparation of oil phase:

[0346] The required quantity of triazolone herbicide such as Amicarbazone, safener such as Benoxacor, optionally a chloroacetamide herbicide such as S-metolachlor and a dispersant were dissolved in an organic solvent such as n-butanol, benzyl alcohol or N, N-dimethyldecanamide and stirred for 1-2 hours to obtain an oil phase. Step b) Preparation of aqueous phase:

[0347] The required quantity of water and at least one agrochemical excipient selected from dispersant, emulsifier, anti-settling agent, defoaming agent, anti-freezing agent, thickening agent, biocide etc. are mixed together to obtain an aqueous phase. Optionally, required quantity of triketone herbicide such as mesotrione is also added to the aqueous phase. The mixture obtained is milled to obtain desired particle size.

[0348] Step c) Mixing oil phase with aqueous phase

[0349] The oil phase and aqueous phase obtained in step a) and b), respectively, were mixed together to obtain a suspoemulsion. To this suspoemulsion was then added thickening solution containing a thickening agent, humectant and water. Examples 1, 2 and 3 as provided in table 1 below are prepared according to general procedure provided above. Comparative example 1 is also prepared according to general procedure except for benzyl alcohol is not used in step a) of the process.

[0350] Table 1

[0351] Ex 1 Ex 2 Ex 3 Ex 4 Ex 5 Ex 6 Ex 7 Ex 8 Comparative Ex Ingredients (% (% w / w) (% w / w) (% w / w) (% w / w) (% w / w) (% (% 1

[0352] w / w) w / w) w / w) (% w / w)

[0353] - 39.17 - S-Metolachlor 39.17 39.17 39.17 39.17 39.17 39.17 Amicarbazone 9.59 9.59 9.59 9.59 9.59 9.59 9.59 9.59 9.59 Mesotrione 4.3 - 4.3 4.3 4.3 4.3 - 4.3 4.3 Benoxacor 1.85 1.85 1.85 1.85 1.85 1.85 1.85 1.85 1.85 Benzyl Alcohol 10 10 10 10 - - 10 10 - - 10 - N, N- dimethyldecanamide

[0354] n-butanol - - - - - 10 - - - Dispersant 5 5 5 4.3 4.3 4.3 4.3 4.3 4.3 Emulsifier 0.3 0.3 0.3 1 1 1 1 1 1

[0355] 0.5 0.5

[0356] Anti-settling agent 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Defoamer 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2

[0357] 2.5 2.5

[0358] Anti-freezing agent 2.5 2.5 2.5 2.5 2.5 2.5 2.5 Thickener 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 Biocide 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2

[0359]

[0360] Water Q.S Q.S Q.S Q.S Q.S Q.S Q.S Q.S Q.S Table 2

[0361] Ex 9 Comparative Ex 2 Comparative Ex 3 Comparative Ex 4 Ingredients (% (% w / w) (% w / w) (% w / w)

[0362] w / w)

[0363] S-Metolachlor 49.48 49.48 49.48 49.48

[0364] Amicarbazone 12.38 12.38 12.38 12.38 Benoxacor 2.3 2.3 2.3 2.3 Dispersant 5.40 5.40 5.40 5.40 Emulsifier 6.60 6.60 6.60 6.60

[0365] n-butanol 5 5 5 5

[0366] - - N, N- dimethyldecanamide 18.84

[0367] Heavy Aromatic

[0368] Naphtha (C11-C12

[0369] aromatic

[0370] hydrocarbons) 18.84

[0371] 18.84 - Aromatic Solvent C- 10

[0372] - 18.84

[0373]

[0374] Aromatic Solvent C-9 - - Stability Study

[0375] Compositions of examples and comparative examples were evaluated on the physico-chemical parameters. The samples were observed for crystal formation / growth post 14 days storage at -10°C. The crystal formation / growth was confirmed with two tests

[0376] 1) Filtration test: The samples were filtered through muslin cloth using vacuum and observed for crystals using microscopic images recorded at 5X- maginfication and viewed by top Light.

[0377] 2) High performance liquid chromatography (HPLC) test: Crystals remained on muslin cloth analyzed by HPLC and amicarbazone is confirmed HPLC and further quantified. Method for HPLC is mentioned below.

[0378] Table 3

[0379] Example 1 Example 2 Example 3 Example 4 Comparative Parameter (% w / w) (% w / w) (% w / w) (% w / w) Example 1

[0380] (% w / w) Residue on No No No No Yes the Muslin

[0381] cloth

[0382] Amicarbazone 0.002 0.003 0.008 0.002 1.7 crystallized

[0383] out and

[0384] retained on

[0385] muslin cloth

[0386] analyzed by

[0387]

[0388] HPLC

[0389] Conclusion:

[0390] Based on the data presented in Table 3, the liquid herbicidal formulation developed in this invention demonstrated minimal to no crystal formation or growth, indicating stability across various assessment parameters. In contrast, the formulation in Comparative Example 1, which did not include benzyl alcohol, experienced approximately 18% crystallization of amicarbazone from its total content, rendering it unstable and therefore not preferred.

[0391] Table 4

[0392] Example 9 Comparative Comparative Comparative Parameter (% w / w) example2 (% example3 (% example 4 (% w / w) w / w) w / w) Residue on the No Yes Yes Yes Muslin cloth

[0393] Amicarbazone 0 3.46 2.97 3.82 crystallized out

[0394] and retained on

[0395] muslin cloth

[0396] analyzed by

[0397] HPLC

[0398]

[0399] Based on the data presented in Table 4, the liquid herbicidal formulation developed in this invention demonstrated minimal to no crystal formation or growth, indicating stability across various assessment parameters. In contrast, the formulation in Comparative Example 2-4 exhibit up to 30% crystallization of amicarbazone from its total content, rendering it unstable and therefore not preferred for further development or application.

Claims

We claim1. A liquid herbicidal composition comprisinga) amicarbazone;b) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; andc) an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof.

2. The composition as claimed in claim 1, wherein amicarbazone is in an amount ranging from about 1% w / w to about 30% w / w.

3. The composition as claimed in claim 1, wherein the triketone herbicide is selected from the group comprising benquitrione, benzobicyclon, bicyclopyrone, dioxopyritrione, fenquinotrione, ketospiradox, lancotrione, mesotrione, quintrione, sulcotrione, tefuryltrione, tembotrione, or salts thereof.

4. The composition as claimed in claim 3, wherein the triketone herbicide is mesotrione or salts thereof.

5. The composition as claimed in claim 1, wherein the triketone herbicide is in an amount ranging from about 1% w / w to about 20% w / w.

6. The composition as claimed in claim 1, wherein the chloroacetamide herbicide is selected from group comprising acetochlor, alachlor, allidochlor, amidochlor, butachlor, butenachlor, CDEA (2-chloro-N, N- diethylacetamide), delachlor, diethatyl, dimethachlor, dimethenamid, dimethenamid-P, ethachlor, ethaprochlor, metazachlor, metolachlor, S-metolachlor, pethoxamid, pretilachlor, propachlor, propisochlor, prynachlor, terbuchlor, thenylchlor, xylachlor or salts thereof.

7. The composition as claimed in claim 6, wherein the chloroacetamide herbicide is selected from group comprising of acetochlor, metolachlor, S- metolachlor or salts thereof.

8. The composition as claimed in claim 1, wherein the chloroacetamide herbicide is present in an amount ranging from about 1% w / w to about 60% w / w.

9. The composition as claimed in claim 1, wherein the organic solvent is selected from the group comprising of n-butanol, alpha-4 dimethylbenzyl alcohol, benzyl alcohol, 2-phenyl-2-propanol, 1-phenylethanol and N, N- dimethyldecanamide.

10. The composition as claimed in claim 1, wherein liquid herbicidal composition comprises organic solvent is in an amount ranging from about 1% w / w to about 40% w / w.

11. The composition as claimed in claim 1, wherein the liquid herbicidal composition further comprises a safener selected from a group comprising benoxacor, dichlormid, and furilazole.

12. The composition as claimed in claim 1, wherein the liquid herbicidal composition further comprises at least one agrochemical excipient.

13. A liquid herbicidal composition comprisinga) from about 1% w / w to about 30% w / w amicarbazone;b) from about 1% w / w to about 20% w / w mesotrione; and / or from about 1% w / w to about 60% w / w Metolachlor or S-metolachlor; c) from about 1% w / w to about 40% w / w of an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof; andd) at least one agrochemical excipient.

14. A liquid herbicidal composition comprisinga) from about 1% w / w to about 30% w / w amicarbazone; b) from about 1% w / w to about 60% w / w Metolachlor or S- metolachlor;c) from about 1% w / w to about 40% w / w of an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof; andd) at least one agrochemical excipient.

15. A process for preparation of a liquid herbicidal composition comprising a) amicarbazone;b) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide;c) an organic solvent selected from a group comprising of an alcohol, an amide solvent, or a mixture thereof; andd) at least one agrochemical excipientwherein said process comprises steps ofa) preparing an oil phase comprising amicarbazone and said organic solvent; b) preparing an aqueous phase comprising at least one agrochemical excipient; c) mixing oil phase of step a) with aqueous phase of step b) to obtain the liquid herbicidal composition; andwherein said oil phase of step a) or aqueous phase of step b) comprises at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide.

16. The process as claimed in claim 12, wherein the triketone herbicide is selected from the group comprising benquitrione, benzobicyclon, bicyclopyrone, dioxopyritrione, fenquinotrione, ketospiradox, lancotrione, mesotrione, quintrione, sulcotrione, tefuryltrione, tembotrione, or salts thereof; and chloroacetamide herbicide is selected from group comprising acetochlor, alachlor, allidochlor, amidochlor, butachlor, butenachlor, CDEA (2-chloro-N, N-diethylacetamide), delachlor, diethatyl, dimethachlor, dimethenamid, dimethenamid-P, ethachlor, ethaprochlor, metazachlor, metolachlor, S-metolachlor, pethoxamid, pretilachlor, propachlor, propisochlor, prynachlor, terbuchlor, thenylchlor, xylachlor or salts thereof.

17. A method of controlling weeds comprising applying to the plants or the locus thereof, an effective amount of a liquid herbicidal composition comprisinga) amicarbazone;b) at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; andc) an organic solvent selected from a group comprising an alcohol, an amide solvent, or a mixture thereof.

18. The method as claimed in claim 14, wherein triketone herbicide is selected from the group comprising benquitrione, benzobicyclon, bicyclopyrone, dioxopyritrione, fenquinotrione, ketospiradox, lancotrione, mesotrione, quintrione, sulcotrione, tefuryltrione, tembotrione, or salts thereof; and chloroacetamide herbicide is selected from group comprising acetochlor, alachlor, allidochlor, amidochlor, butachlor, butenachlor, CDEA (2-chloro- N, N-diethylacetamide), delachlor, diethatyl, dimethachlor, dimethenamid, dimethenamid-P, ethachlor, ethaprochlor, metazachlor, metolachlor, S- metolachlor, pethoxamid, pretilachlor, propachlor, propisochlor, prynachlor, terbuchlor, thenylchlor, xylachlor or salts thereof.

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