Method for controlling brachiaria decumbens weeds in area and combination used

Abstract

FIELD: agriculture.SUBSTANCE: method for controlling the growth of the weed Brachiaria decumbens includes treating an area in which the weed grows with a synergistic composition containing glufosinate and a herbicide selected from oxyfluorfen, imazethapyr, glyphosate, flumioxazin, 2,4-D, triclopyr, clethodim, haloxyfop, carfentrazone, saflufenacil.EFFECT: proposed method for controlling the growth of the weed Brachiaria decumbens reduces the development of weed resistance to a specific herbicide, while not having a phytotoxic effect on non-target crops.10 cl, 4 tbl, 1 ex.

Description

[0001] CROSS-REFERENCES TO RELATED APPLICATIONS

[0002] This application claims priority to Indian Patent Application No. IN 202121046316, filed on October 11, 2021, which is incorporated herein by reference in its entirety.

[0003] FIELD OF TECHNOLOGY

[0004] The present invention relates to a method for controlling the growth of unwanted vegetation. More specifically, the present invention relates to a method for controlling the weed Brachiaria decumbens in a field and a combination useful therein.

[0005] STATE OF THE ART

[0006] Weeds are unwanted plants that cause damage to agriculture and significantly impact crop yields. Farmers use various types of herbicides to control weeds. Herbicides with different modes of action are often combined, providing a broader spectrum of control and managing herbicide resistance. However, currently known combinations are insufficient for controlling resistant and persistent weeds, such as Brachiaria decumbens.

[0007] In areas infested with Brachiaria decumbens, crop yield reductions of up to 82% have been reported. Brachiaria decumbens is a perennial plant, vigorously bushy and erect, reaching 30-100 cm in height. It reproduces by seeds, rhizomes, and stolons. Its seeds remain viable for up to 8 years; most are initially dormant and can germinate at various depths (0-8 cm). This species presents difficulties during sowing due to irregular and prolonged germination. Due to this characteristic, a herbicide with a long effective period (residual) of control is required for pre-emergence control. In such cases, an effective herbicide combination may offer some hope for effective control of this weed.

[0008] Furthermore, combining herbicides may not always achieve the desired effect. Herbicide combinations can cause additive or antagonistic effects. This can also lead to phytotoxicity to crops, making such a combination undesirable. Therefore, herbicides must be carefully selected to achieve a synergistic effect, which will control weeds without causing phytotoxicity to crops and reduce the likelihood of weed resistance to a specific herbicide.

[0009] Accordingly, there is a need in the art for a method for protecting crops from the weed Brachiaria decumbens using combinations that have beneficial properties, such as a herbicide combination that is synergistic, helps manage resistance, reduces the dosage of herbicides used, and a herbicide combination that has excellent residual effects.

[0010] SUMMARY OF THE INVENTION

[0011] Objectives of the invention

[0012] The object of the present invention is to provide a method for controlling the weed Brachiaria decumbens by using a synergistic herbicide combination.

[0013] The aim of the present invention is to provide a method for controlling weedsBrachiaria decumbens by using a synergistic herbicide combination containing glufosinate and at least one herbicide selected from nitrophenyl ether, imidazolinone, organophosphorus compounds, dicarboximide, phenoxyacetic acid, pyridine, cyclohexene oxime, aryloxyphenoxypropionic acid, triazolone class herbicides and / or uracil class herbicides.

[0014] The aim of the present invention is to provide a method for controlling weedsBrachiaria decumbens by using a synergistic herbicide combination containing glufosinate and at least two herbicides selected from nitrophenyl ether, imidazolinone, organophosphorus compounds, dicarboximide, phenoxyacetic acid, pyridine, cyclohexene oxime, aryloxyphenoxypropionic acid, triazolone class herbicides and / or uracil class herbicides.

[0015] The object of the present invention is to provide a method for controlling weedsBrachiaria decumbens in agricultural plants.

[0016] The object of the present invention is to provide a method for increasing the yield of an agricultural crop by using a synergistic herbicide combination.

[0017] The object of the present invention is to provide a method for improving plant health by using a synergistic herbicide combination.

[0018] Aspects of the present invention

[0019] This document describes the methods for controlling the weed Brachiaria decumbens by applying a synergistic herbicide combination.

[0020] In a first aspect of the present invention, there is provided a method for controlling weedsBrachiaria decumbens in a plot, comprising treating the plot with a synergistic combination comprising L-glufosinate and a second herbicide selected from:

[0021] (a) a herbicide of the nitrophenyl ether class of oxyfluorfen;

[0022] (b) an imidazolinone herbicide of the imazethapyr class;

[0023] (c) organophosphorus herbicide glyphosate;

[0024] (d) dicarboximide class herbicide flumioxazin;

[0025] (e) 2,4-D phenoxyacetic acid herbicide;

[0026] (f) a pyridine herbicide of the triclopyr class;

[0027] (g) cyclohexene oxime herbicide clethodim;

[0028] (h) aryloxyphenoxypropionic acid class herbicide haloxyfop;

[0029] (i) the triazolone herbicide carfentrazone;

[0030] (j) uracil class herbicide saflufenacil.

[0031] In a preferred embodiment, the weight ratio of L-glufosinate and the second herbicide is from 1:75 to 75:1.

[0032] In a preferred embodiment, L-glufosinate is present in an amount of 100 to 400 g a.i. / L.

[0033] In a preferred embodiment, L-glufosinate is present in an amount of 180 to 380 g a.i. / L.

[0034] In a preferred embodiment, the second herbicide is selected from:

[0035] (a) a herbicide of the nitrophenyl ether class oxyfluorfen, present in an amount ranging from 100 to 400 g a.i. / l;

[0036] (b) an imidazolinone herbicide imazethapyr present in an amount ranging from 10 to 250 g a.i. / l;

[0037] (c) the organophosphorus herbicide glyphosate, present in an amount ranging from 200 to 1000 g a.i. / L;

[0038] (d) a dicarboximide herbicide flumioxazin present in an amount in the range of 200-800 g a.i. / l;

[0039] (e) a herbicide of the phenoxyacetic acid class 2,4-D, present in an amount ranging from 400 to 1200 g a.i. / l;

[0040] (f) a herbicide of the pyridine class triclopyr, present in an amount ranging from 300-1000 g a.i. / l;

[0041] (g) of the cyclohexene oxime herbicide clethodim present in an amount ranging from 100-400 g a.i. / l;

[0042] (h) an aryloxyphenoxypropionic acid herbicide haloxyfop, present in an amount ranging from 1 to 250 g a.i. / l;

[0043] (i) the triazolone herbicide carfentrazone, present in an amount ranging from 100 to 800 g a.i. / L; or

[0044] (j) of the uracil class herbicide saflufenacil, present in an amount ranging from 1-1000 g a.i. / l /

[0045] In a preferred embodiment, L-glufosinate is applied at an application rate of 150-350 g a.v. / ha.

[0046] In a preferred embodiment, the second herbicide is selected from:

[0047] (a) a herbicide of the nitrophenyl ether class oxyfluorfen, applied at an application rate of 50-150 g a.v. / ha;

[0048] (b) an imidazolinone herbicide, imatezapyr, applied at a rate of 20 to 150 g a.v. / ha;

[0049] (c) organophosphorus herbicide glyphosate, applied at an application rate of 200-500 g a.v. / ha;

[0050] (d) dicarboximide herbicide flumioxazin, applied at an application rate of 5-100 g a.v. / ha;

[0051] (e) a herbicide of the phenoxyacetic acid class 2,4-D, applied at an application rate of 100-300 g a.v. / ha;

[0052] (f) a herbicide of the pyridine class triclopyr, applied at an application rate of 100-400 g a.v. / ha;

[0053] (g) cyclohexene oxime herbicide clethodim, applied at an application rate of 10-100 g a.v. / ha;

[0054] (h) aryloxyphenoxypropionic acid herbicide haloxyfop, applied at a rate of 10-100 g a.v. / ha;

[0055] (i) the triazolone herbicide carfentrazone applied at a rate of 1-50 g a.i. / ha; and / or

[0056] (j) uracil class herbicide saflufenacil, applied at a rate of 10-400 g a.v. / ha.

[0057] In a preferred embodiment, the method includes:

[0058] i. producing a premix or tank mix of L-glufosinate and a second herbicide; and

[0059] ii. application of the obtained premix or tank mix to the desired area.

[0060] In a preferred embodiment, the method comprises directly sequentially applying glufosinate and a second herbicide.

[0061] In a second aspect, the present invention provides a combination for controlling weeds of Brachiaria decumbens, comprising L-glufosinate and a second herbicide selected from

[0062] (a) a herbicide of the nitrophenyl ether class of oxyfluorfen;

[0063] (b) an imidazolinone herbicide of the imazethapyr class;

[0064] (c) organophosphorus herbicide glyphosate;

[0065] (d) dicarboximide class herbicide flumioxazin;

[0066] (e) 2,4-D phenoxyacetic acid herbicide;

[0067] (f) a pyridine herbicide of the triclopyr class;

[0068] (g) cyclohexene oxime herbicide clethodim;

[0069] (h) aryloxyphenoxypropionic acid herbicide haloxyfop;

[0070] (i) the triazolone herbicide carfentrazone;

[0071] (j) uracil class herbicide saflufenacil.

[0072] DETAILED DESCRIPTION

[0073] Some typical embodiments of the present invention are discussed below. The invention in its broader aspects is not limited to specific details and typical methods. Illustrative examples are described in this section in connection with the provided embodiments and methods.

[0074] It should be noted that the singular forms "a" and "an" as used in this specification include plural references unless the content clearly requires otherwise. Thus, for example, a reference to a composition containing a "surfactant" includes a mixture of two or more surfactants. It should also be noted that the term "or" is generally used in a sense that it includes "and / or" unless the content clearly requires otherwise. The terms "emulsifier" and "surfactant" mean essentially the same thing and may be used interchangeably. Furthermore, the terms "composition" or "formulation" also mean essentially the same thing and may be used interchangeably.

[0075] The expression of various quantities in units of "%" or "wt.%" means a percentage by weight of the total solution or composition, unless otherwise specified. The present invention in all its aspects is described in detail below:

[0076] Glufosinate (phosphinothricin; DL-homoalanin-4-yl(methyl)phosphinic acid) is a racemic phosphinic amino acid (Hoerlein, G. 1994; Glufosinate (Phosphinothricin), a natural amino acid with unexpected herbicidal properties. Rev. of Environmental Contamination and Toxicology 138, 73 - 145). Its ammonium salt (glufosinate-ammonium) is widely used as a non-selective herbicide and is the active ingredient in the commercial herbicide formulations Basta™, Buster™, Challenge™, Conquest™, Dash™, Final™, Finale™, Liberty™ and Ignite™. The L-isomer of glufosinate is a structural analog of glutamate and, therefore, is a competitive inhibitor of the enzyme glutamine synthetase (GS) of bacteria and plants (Bayer et al, 1972, Phosphinothricin and phosphinothricyl-alanyl-alanine. Helv. Chim. Acta 55, 224–239; Leason et al., 1982, Inhibition of pea leaf glutamine synthetase by methioninesulfoximine, Phosphinothricin and other glutamate analogs. J. Phytochem. 21, 855–857).The D-isomer is not a GS inhibitor and does not have herbicidal activity.

[0077]

[0078]

[0079] Chemical structure of D-glufosinate and L-glufosinate.

[0080] The inventors of the present invention have surprisingly found that the weed control of Brachiaria decumbens can be completely achieved by a combination of glufosinate and at least one herbicide selected from:

[0081] (a) nitrophenyl ether herbicides;

[0082] (b) imidazolinone class herbicides;

[0083] (c) organophosphorus herbicides;

[0084] (d) dicarboximide class herbicides;

[0085] (e) phenoxyacetic acid class herbicides;

[0086] (f) pyridine class herbicides;

[0087] (g) cyclohexene oxime class herbicides;

[0088] (h) aryloxyphenoxypropionic acid class herbicides;

[0089] (i) triazolone class herbicides; and / or

[0090] (j) herbicides of the uracil class.

[0091] Even more unexpectedly, this combination of glufosinate and a second herbicide was found to provide a synergistic effect in controlling Brachiaria decumbens. The degree of synergistic enhancement of the above combination's effectiveness in controlling Brachiaria decumbens was unpredictable and unexpected.

[0092] The term "glufosinate" as used herein refers to any molecule that is a racemic phosphinic amino acid or a salt thereof. This term also includes forms and isomers of glufosinate, such as glufosinate-p, L-glufosinate, D-glufosinate, and their salts, such as sodium, potassium, or ammonium salts. Agronomically acceptable salts such as monosodium salt, disodium salt, monopotassium salt, dipotassium salt, calcium salt, ammonium salt, -NH3(CH3) may be used. + salt, -NH2(CH3) 2+salt, -NH(CH3) 3+ salt, -NH(CH3)2(C2H4OH) + salt, -NH2(CH3)(C2H4OH) + salt, etc. The term may generally refer to any form of glufosinate or its salt, such as solvates, hydrates, anhydrous form, polymorphic forms, pseudopolymorphic forms, amorphous form, or mixtures thereof.

[0093] Preferably, the herbicide glufosinate used in any aspect or embodiment described herein may be replaced or used interchangeably as its L-isomer, i.e., L-glufosinate.

[0094] The term "L-glufosinate" used in this document refers to the L-isomer of glufosinate or its salt. The L-isomer of glufosinate is a structural analogue of glutamate and, therefore, is a competitive inhibitor of the enzyme glutamine synthetase (GS) in bacteria and plants. The L-enantiomer of glufosinate acts by inhibiting glutamine synthetase, thereby causing the accumulation of toxic levels of ammonium ions and indirectly stopping photosynthesis. It is also known as phosphinothricin or (S)-2-amino-4-(hydroxy(methyl)phosphonoyl)butanoic acid. This term often covers derivatives, such as salts and esters, of L-glufosinate. The term may generally refer to any form of L-glufosinate or its salt, such as solvates, hydrates, anhydrous forms, polymorphic forms, pseudopolymorphic forms, amorphous forms, or mixtures thereof. The term "L-glufosinate or its salt" encompasses any salt of L-glufosinate, preferably the sodium, potassium, and ammonium salts.The term may also refer to an isomeric (racemic) mixture of L-glufosinate, D-glufosinate and their salts, wherein the content of L-glufosinate or its salt in the mixture is 70% or more, preferably 80% or more and more preferably 90% or more.

[0095] Therefore, in one embodiment, the preferred glufosinate herbicide is L-glufosinate.

[0096] The term "weed Brachiaria decumbens" in this context refers to a weedy perennial plant that grows in fields where other crops are grown. Therefore, Brachiaria decumbens is a weed because it is not a target crop.

[0097] The term "herbicide" as used herein refers to a compound that controls or modifies plant growth. The term "herbicidally effective amount" refers to the amount of such a compound or combination of such compounds that is capable of exerting a controlling or modifying effect on plant growth. Control effects include all deviations from natural development, such as death, stunting, leaf scorch, albinism, dwarfing, etc. The term "plant" refers to all physical parts of the plant, including seeds, seedlings, transplants, roots, tubers, stems, cuttings, foliage, and fruit. "Site" is intended to include soil, seeds, transplants, and established vegetation.

[0098] Thus, in one embodiment, the present invention provides a method of controlling the growth of unwanted vegetation in an area, comprising treating the area with a synergistic combination comprising glufosinate and at least one herbicide selected from:

[0099] (a) nitrophenyl ether herbicides;

[0100] (b) imidazolinone class herbicides;

[0101] (c) organophosphorus herbicides;

[0102] (d) dicarboximide class herbicides;

[0103] (e) phenoxyacetic acid class herbicides;

[0104] (f) pyridine class herbicides;

[0105] (g) cyclohexene oxide class herbicides;

[0106] (h) aryloxyphenoxypropionic acid class herbicides;

[0107] (i) triazolone class herbicides;

[0108] (j) uracil class herbicides;

[0109] and their combinations,

[0110] The unwanted vegetation is the weed Brachiaria decumbens.

[0111] In a preferred embodiment, glufosinate is L-glufosinate.

[0112] Thus, in one embodiment, the present invention provides a method of controlling the growth of unwanted vegetation in an area, comprising treating the area with a synergistic combination comprising L-glufosinate and at least one herbicide selected from:

[0113] (a) herbicides of the nitrophenyl ether class;

[0114] (b) imidazolinone class herbicides;

[0115] (c) organophosphorus herbicides;

[0116] (d) dicarboximide class herbicides;

[0117] (e) phenoxyacetic acid class herbicides;

[0118] (f) pyridine herbicides;

[0119] (g) cyclohexene oxide class herbicides;

[0120] (h) aryloxyphenoxypropionic acid class herbicides;

[0121] (i) triazolone class herbicides;

[0122] (j) herbicides of the uracil class;

[0123] and their combinations,

[0124] The unwanted vegetation is the weed Brachiaria decumbens.

[0125] In one embodiment, the nitrophenyl ether class herbicide is selected from the group consisting of oxyfluorfen, acifluorfen, aclonifen, bifenox, chlormethoxyfen, chlornitrofen, etnipromide, fluorodifen, fluoroglycofen, fluoronitrofen, fomesafen, fucaomi, furyloxyfen, halosaphen, lactofen, nitrofen, nitrofluorfen and combinations thereof.

[0126] In a preferred embodiment, the nitrophenyl ether class herbicide is oxyfluorfen.

[0127] In one embodiment, the present invention provides a synergistic combination comprising L-glufosinate and oxyfluorfen for controlling unwanted vegetation growth in a specific area.

[0128] In one embodiment, the imidazoline class herbicide is selected from the group consisting of imazethapyr, imazamethabenz, imazamox, imazapic, imazapyr, imazaquin, and combinations thereof.

[0129] In a preferred embodiment, the imidazolinone class herbicide is imazethapyr.

[0130] In one embodiment, the present invention provides a synergistic combination comprising L-glufosinate and imazethapyr for controlling unwanted vegetation growth in a specific area.

[0131] In one embodiment, the organophosphorus herbicide is selected from the group consisting of glyphosate, amiprofos-methyl, amiprofos, anilofos, bensulide, bilanaphos, butamifos, klatsifos, 2,4-DEP (2,4-dichlorophenoxyethyl phosphite), DMPA (O-(2,4-dichlorophenyl)O-methyl isopropyl phosphoramidothioate), EBEP (ethyl bis(2-ethylhexyl)phosphinate), fosamine, glufosinate-P, piperofos, and combinations thereof.

[0132] In a preferred embodiment, the organophosphorus herbicide is glyphosate.

[0133] In one embodiment, the present invention provides a synergistic combination comprising L-glufosinate and glyphosate for controlling the growth of unwanted vegetation in a particular area.

[0134] In one embodiment, the dicarboximide class herbicide is selected from the group consisting of flumioxazin, cinidon-ethyl, flumesin, flumiclorac, flumipropin, and combinations thereof.

[0135] In a preferred embodiment, the dicarboximide class herbicide is flumioxazin.

[0136] In one embodiment, the present invention provides a synergistic combination comprising L-glufosinate and flumioxazin for controlling the growth of unwanted vegetation in a specific area. In one embodiment, the phenoxyacetic acid herbicide is selected from the group consisting of claviphos, 22,4-D, 4-CPA (p-chlorophenoxyacetic acid), 3,4-DA, MCPA (2-methyl-4-chlorophenoxyacetic acid), MCPA-thioethyl, 2,4,5-T.

[0137] In a preferred embodiment, the phenoxyacetic acid class herbicide is 2,4-D.

[0138] In one embodiment, the present invention provides a synergistic combination comprising L-glufosinate and 2,4-D for controlling the growth of unwanted vegetation in a particular area.

[0139] In one embodiment, the pyridine class herbicide is selected from the group consisting of triclopyr, aminopyralid, cliodinate, clopyralid, diflufenican, dithiopyr, florpyrauxifen, flufenican, fluroxypyr, galaxifen, haloxidine, picloram, picolinafen, pyriclor, pyroxsulam, thiazopyr, xyloxadine, and combinations thereof.

[0140] In a preferred embodiment, the pyridine class herbicide is triclopyr.

[0141] In one embodiment, the present invention provides a synergistic combination comprising L-glufosinate and triclopyr for controlling unwanted vegetation growth in a specific area.

[0142] In one embodiment, the cyclohexene oxime class herbicide is selected from the group consisting of clethodim, alloxydim, butroxydim, cloproxydim, cycloxydim, profoxydim, sethoxydim, tepraloxydim, tralkoxydim, and combinations thereof.

[0143] In a preferred embodiment, the cyclohexene oxime class herbicide is clethodim.

[0144] In one embodiment, the present invention provides a synergistic combination comprising L-glufosinate and clethodim for controlling unwanted vegetation growth in a specific area.

[0145] In one embodiment, the aryloxyphenoxypropionic acid class herbicide is selected from the group consisting of haloxyfop, chlorazifop, clodinafop, clopofop, cyhalofop, diclofop, fenoxaprop, fenoxaprop-P, fentiaprop, fluazifop, fluazifop-P, haloxyfop-P, isoxapyrifop, metamifop, propacizafop, quizalofop, quizalofop-P, trifop, and combinations thereof.

[0146] In a preferred embodiment, the aryloxyphenoxypropionic acid class herbicide is haloxyfop.

[0147] In one embodiment, the present invention provides a synergistic combination comprising L-glufosinate and haloxyfop for controlling unwanted vegetation growth in a specific area. In one embodiment, the triazolone herbicide is selected from the group consisting of carfentrazone, amicarbazone, bencarbazone, flucarbazone, ipfencarbazone, propoxycarbazone, sulfentrazone, thiencarbazone, and combinations thereof.

[0148] In a preferred embodiment, the triazolone class herbicide is carfentrazone.

[0149] In one embodiment, the present invention provides a synergistic combination comprising L-glufosinate and carfentrazone for controlling unwanted vegetation growth in a specific area.

[0150] In one embodiment, the uracil class herbicide is selected from the group consisting of bromacil, isocil, lenacil, terbacil, benzphenedizone, butafenacil, epirifenacil, flupropacil, saflufenacil, thiafenacil, and combinations thereof.

[0151] In a preferred embodiment, the uracil class herbicide is saflufenacil.

[0152] In one embodiment, the present invention provides a synergistic combination comprising L-glufosinate and saflufenacil for controlling unwanted vegetation growth in a specific area.

[0153] In one embodiment, the present invention provides a method for controlling weedsBrachiaria decumbens in an area by treating said area with a combination of glufosinate and at least one herbicide, wherein the weight ratio of glufosinate and the at least one herbicide is in the range of 1:100 to 100:1.

[0154] In one embodiment, the present invention provides a method for controlling weedsBrachiaria decumbens in an area by treating said area with a combination of L-glufosinate and at least one herbicide, wherein the weight ratio of L-glufosinate and the at least one herbicide is in the range of 1:100 to 100:1.

[0155] In one embodiment, the present invention provides a method for controlling weedsBrachiaria decumbens in an area by treating said area with a combination of glufosinate and at least one herbicide, wherein the weight ratio of glufosinate and the at least one herbicide is in the range of 1:75 to 75:1.

[0156] In one embodiment, preferably, the weight ratio between glufosinate and at least one herbicide is in the range of 1:50 to 50:1.

[0157] More preferably, the weight ratio between glufosinate and at least one herbicide is in the range of 1:25 to 25:1, more preferably 1:10 to 10:1.

[0158] In a preferred embodiment, the weight ratio between glufosinate and at least one herbicide is in the range of 1:5 to 5:1, even more preferably 1:2 to 2:1.

[0159] In one embodiment, the present invention provides a method for controlling Brachiaria decumbens weeds in an area by treating said area with a combination of glufosinate and at least one herbicide, wherein the weight ratio between glufosinate and the nitrophenyl ether herbicide is in the range of 1:100 to 100:1, in particular from 1:75 to 75:1, more precisely from 1:50 to 50:1, even more precisely from 1:25 to 25:1. In a preferred embodiment, the weight ratio between glufosinate and the nitrophenyl ether herbicide is in the range of 1:10 to 10:1, preferably from 1:5 to 5:1, more preferably from 1:2 to 2:1.

[0160] In one embodiment, the present invention provides a method for controlling Brachiaria decumbens weeds in a site by treating said site with a combination of glufosinate and at least one imidazolinone herbicide, wherein the weight ratio of glufosinate and the imidazolinone herbicide is in the range of 1:100 to 100:1, in particular from 1:75 to 75:1, more precisely from 1:50 to 50:1, even more precisely from 1:25 to 25:1. In a preferred embodiment, the weight ratio between glufosinate and the imidazolinone herbicide is in the range of 1:10 to 10:1, preferably from 1:5 to 5:1, more preferably from 1:2 to 2:1.

[0161] In one embodiment, the present invention provides a method for controlling weedsBrachiaria decumbens in an area by treating said area with a combination of glufosinate and at least one herbicide, wherein the weight ratio of glufosinate and the imidazolinone herbicide is in the range of 2:5 to 5:2.

[0162] In one embodiment, the present invention provides a method for controlling Brachiaria decumbens weeds in a site by treating said site with a combination of glufosinate and at least one dicarboximide herbicide, wherein the weight ratio of glufosinate and the dicarboximide herbicide is in the range of 1:100 to 100:1, in particular from 1:75 to 75:1, more precisely from 1:50 to 50:1, even more precisely from 1:25 to 25:1. In a preferred embodiment, the weight ratio between glufosinate and the dicarboximide herbicide is in the range of 1:10 to 10:1, preferably from 1:5 to 5:1.

[0163] In one embodiment, the present invention provides a method for controlling Brachiaria decumbens weeds in an area by treating said area with a combination of glufosinate and at least one phenoxyacetic acid herbicide, wherein the weight ratio of glufosinate and the phenoxyacetic acid herbicide is in the range of 1:100 to 100:1, in particular from 1:75 to 75:1, more precisely from 1:50 to 50:1, even more precisely from 1:25 to 25:1. In a preferred embodiment, the weight ratio between glufosinate and the phenoxyacetic acid herbicide is in the range of 1:10 to 10:1, preferably from 1:5 to 5:1.

[0164] In one embodiment, the present invention provides a method for controlling Brachiaria decumbens weeds in a site by treating said site with a combination of glufosinate and at least one pyridine herbicide, wherein the weight ratio of glufosinate and the pyridine herbicide is in the range of 1:100 to 100:1, in particular from 1:75 to 75:1, more precisely from 1:50 to 50:1, even more precisely from 1:25 to 25:1. In a preferred embodiment, the weight ratio between glufosinate and the pyridine herbicide is from 1:10 to 10:1, preferably from 1:5 to 5:1.

[0165] In one embodiment, the present invention provides a method for controlling Brachiaria decumbens weeds in a site by treating said site with a combination of glufosinate and at least one cyclohexene oxime class herbicide, wherein the weight ratio of glufosinate and the cyclohexene oxime class herbicide is in the range of 1:100 to 100:1, in particular from 1:75 to 75:1, more precisely from 1:50 to 50:1, even more precisely from 1:25 to 25:1. In a preferred embodiment, the weight ratio between glufosinate and the cyclohexene oxime class herbicide is in the range of 1:10 to 10:1, preferably from 1:5 to 5:1.

[0166] In one embodiment, the present invention provides a method for controlling Brachiaria decumbens weeds in a site by treating said site with a combination of glufosinate and at least one aryloxyphenoxypropionic acid herbicide, wherein the weight ratio of glufosinate and the aryloxyphenoxypropionic acid herbicide is in the range of 1:100 to 100:1, in particular from 1:75 to 75:1, more precisely from 1:50 to 50:1, even more precisely from 1:25 to 25:1. In a preferred embodiment, the weight ratio between glufosinate and the aryloxyphenoxypropionic acid herbicide is in the range of 1:10 to 10:1, preferably from 1:5 to 5:1.

[0167] In one embodiment, the present invention provides a method for controlling weedsBrachiaria decumbens in an area by treating said area with a combination of glufosinate and at least one triazolone class herbicide, wherein the weight ratio of glufosinate and the triazolone class herbicide is in the range of 1:100 to 100:1, in particular from 1:75 to 75:1, more precisely from 1:50 to 50:1.

[0168] In one embodiment, the present invention provides a method for controlling weedsBrachiaria decumbens in an area by treating said area with a combination of glufosinate and at least one uracil-class herbicide, wherein the weight ratio of glufosinate and the uracil-class herbicide is in the range of 1:100 to 100:1, in particular from 1:75 to 75:1, more precisely from 1:50 to 50:1.

[0169] Furthermore, the inventors also unexpectedly found that the weed control of Brachiaria decumbens can be completely achieved by using a combination of glufosinate, an imidazolinone herbicide, and a triazolone herbicide.

[0170] Even more unexpectedly, it was found that this combination of glufosinate, an imidazolinone herbicide, and a triazolone herbicide, acted synergistically in controlling the weed Brachiaria decumbens. The degree of synergistic enhancement of the above combination's effectiveness in controlling the weed Brachiaria decumbens was unpredictable and unexpected.

[0171] Thus, in one embodiment, the present invention provides a method for controlling weedsBrachiaria decumbens in an area by treating said area with a combination of glufosinate and at least two herbicides, wherein the composition comprises glufosinate; an imidazolinone class herbicide and a triazolone class herbicide.

[0172] In one embodiment, the present invention provides a method for controlling weedsBrachiaria decumbens in an area by treating said area with a combination of glufosinate and at least two herbicides, wherein the herbicide selected from the imidazolinone class of herbicides is imazethapyr, and wherein the herbicide selected from the triazoline class of herbicides is carfentrazone.

[0173] In one embodiment, the present invention provides a method for controlling Brachiaria decumbens weeds in an area by treating said area with a combination of glufosinate and at least two herbicides, wherein the weight ratio of glufosinate and one of the two herbicides is in the range of 1:100 to 100:1. Preferably, the weight ratio of glufosinate and one of the two herbicides is in the range of 1:50 to 50:1, more preferably from 1:25 to 25:1. In another preferred embodiment, the weight ratio of glufosinate and one of the two herbicides is in the range of 1:10 to 10:1, more preferably from 1:5 to 5:1, and even more preferably from 1:2 to 2:1.

[0174] In one embodiment, the present invention provides a method for controlling Brachiaria decumbens weeds in a site by treating said site with a combination of glufosinate and at least two herbicides, wherein the weight ratio of the two herbicides is in the range of 1:100 to 100:1. Preferably, the weight ratio of the two herbicides is in the range of 1:50 to 50:1, more preferably from 1:25 to 25:1. In another preferred embodiment, the weight ratio of the two herbicides is in the range of 1:10 to 10:1, more preferably from 1:5 to 5:1, and even more preferably from 1:2 to 2:1.

[0175] Preferably, the present invention provides a method for controlling weedsBrachiaria decumbens in an area by treating said area with a combination of glufosinate, imazethapyr and carfentrazone, wherein the weight ratio of glufosinate, imazethapyr and carfentrazone is in the range of 1:10:10 to 10:1:1.

[0176] The terms "g a.i. / L" as used in this document mean the concentration of the corresponding active ingredient in "grams" present "per liter" of the composition.

[0177] The terms "g a.i. / h" used in this document mean the concentration of the respective active ingredient in "grams" applied "per hectare" of agricultural field.

[0178] In one embodiment, the present invention provides a method for controlling the weed Brachiaria decumbens in a site by treating said site with a combination of glufosinate and at least one herbicide in a composition, wherein the composition comprises glufosinate in an amount ranging from 100 to 400 g a.i. / L, preferably from 180 to 380 g a.i. / L, more preferably from 250 to 350 g a.i. / L. In a preferred embodiment, the composition comprises 280 g a.i. / L glufosinate.

[0179] In one embodiment, the present invention provides a method for controlling the weed Brachiaria decumbens in an area by treating said area with a combination of glufosinate and at least one herbicide, wherein glufosinate is applied at an application rate of 50-350 g a.i. / h, preferably from 100 g a.i. / h to 250 g a.i. / h.

[0180] In one embodiment, the present invention provides a method for controlling Brachiaria decumbens weeds in a site by treating said site with a combination of L-glufosinate and at least one herbicide in a composition, wherein the composition comprises L-glufosinate in an amount ranging from 100 to 400 g a.i. / L, preferably from 180 to 380 g a.i. / L, more preferably from 250 to 350 g a.i. / L. In a preferred embodiment, the composition comprises 280 g a.i. / L L-glufosinate.

[0181] In one embodiment, the present invention provides a method for controlling the weed Brachiaria decumbens in an area by treating said area with a combination of L-glufosinate and at least one herbicide, wherein L-glufosinate is applied at an application rate of 50-350 g a.i. / h, preferably from 100 g a.i. / h to 250 g a.i. / h.

[0182] In one embodiment, the present invention provides a method for controlling the weed Brachiaria decumbens in a site by treating said site with a combination of glufosinate and at least one herbicide in a composition, wherein the composition comprises glufosinate and at least one nitrophenyl ester herbicide, and wherein the nitrophenyl ester herbicide is present in the composition in an amount in the range of 100 to 400 g a.i. / L, preferably 140 to 340 g a.i. / L, more preferably 200 to 250 g a.i. / L.

[0183] In one embodiment, the present invention provides a method for controlling the weed Brachiaria decumbens in an area by treating said area with a combination of glufosinate and at least one herbicide, wherein the at least one herbicide is a nitrophenyl ether herbicide and is applied at an application rate of 5-250 g a.i. / hr, preferably at a rate of 50-150 g a.i. / hr, and more preferably at a rate of 75-125 g a.i. / hr.

[0184] In one embodiment, the present invention provides a method for controlling the weed Brachiaria decumbens in a site by treating said site with a combination of glufosinate and at least one herbicide in a composition, wherein the composition comprises glufosinate and at least one herbicide of the imidazolinone class, and wherein the composition comprises the herbicide of the imidazolinone class in an amount ranging from 10 to 250 g a.i. / L, preferably 50-200 g a.i. / L, more preferably 75-125 g a.i. / L.

[0185] In one embodiment, the present invention provides a method for controlling the weed Brachiaria decumbens in an area by treating said area with a combination of glufosinate and at least one herbicide, wherein the at least one herbicide is an imidazolinone class herbicide and is applied at an application rate of 5-200 g a.i. / hr, preferably at a rate of 20 to 150 g a.i. / hr, and more preferably at a rate of 50-100 g a.i. / hr.

[0186] In one embodiment, the present invention provides a method for controlling Brachiaria decumbens weeds in a site by treating said site with a combination of glufosinate and at least one herbicide in a composition, wherein the composition comprises glufosinate and at least one organophosphorus herbicide, and wherein the composition comprises the organophosphorus herbicide in an amount in the range of 200 to 1000 g a.i. / L, preferably 400 to 800 g a.i. / L, more preferably 500 to 700 g a.i. / L.

[0187] In one embodiment, the present invention provides a method for controlling the weed Brachiaria decumbens in an area by treating said area with a combination of glufosinate and at least one herbicide, wherein the at least one herbicide is an organophosphorus herbicide and is applied at an application rate of 100-800 g a.i. / h, preferably at a rate of 200-500 g a.i. / h, more preferably 300-400 g a.i. / h.

[0188] In one embodiment, the present invention provides a method for controlling the weed Brachiaria decumbens in a site by treating said site with a combination of glufosinate and at least one herbicide in a composition, wherein the composition comprises glufosinate and at least one herbicide of the dicarboximide class, and wherein the composition comprises the herbicide of the dicarboximide class in an amount in the range of 200-800 g a.i. / L, preferably from 300 to 700 g a.i. / L, more preferably 400-600 g a.i. / L.

[0189] In one embodiment, the present invention provides a method for controlling the weed Brachiaria decumbens in an area by treating said area with a combination of glufosinate and at least one herbicide, wherein the at least one herbicide is a dicarboximide class herbicide and is applied at an application rate of 1 to 200 g a.i. / hr, preferably 5-100 g a.i. / hr, preferably at a rate of 10-50 g a.i. / hr.

[0190] In one embodiment, the present invention provides a method for controlling Brachiaria decumbens weeds in a site by treating said site with a combination of glufosinate and at least one herbicide in a composition, wherein the composition comprises glufosinate and at least one phenoxyacetic acid class herbicide, and wherein the composition comprises the phenoxyacetic acid class herbicide in an amount ranging from 400 to 1200 g a.i. / L, preferably 600-1000 g a.i. / L, more preferably 750-850 g a.i. / L.

[0191] In one embodiment, the present invention provides a method for controlling the weed Brachiaria decumbens in an area by treating said area with a combination of glufosinate and at least one herbicide, wherein the at least one herbicide is a phenoxyacetic acid class herbicide and is applied at an application rate of 50-400 g a.i. / h, preferably 100-300 g a.i. / h, preferably at a rate of 150-250 g a.i. / h.

[0192] In one embodiment, the present invention provides a method for controlling the weed Brachiaria decumbens in a site by treating said site with a combination of glufosinate and at least one herbicide in a composition, wherein the composition comprises glufosinate and at least one pyridine class herbicide, wherein the composition comprises the pyridine class herbicide in an amount in the range of 300-1000 g a.i. / L, preferably from 400 to 900 g a.i. / L, more preferably from 500 to 750 g a.i. / L.

[0193] In one embodiment, the present invention provides a method for controlling the weed Brachiaria decumbens in an area by treating said area with a combination of glufosinate and at least one herbicide, wherein the at least one herbicide is a pyridine class herbicide and is applied at an application rate of 50-500 g a.i. / h, preferably at a rate of 100-400 g a.i. / h, and more preferably 200-350 g a.i. / h.

[0194] In one embodiment, the present invention provides a method for controlling the weed Brachiaria decumbens in a site by treating said site with a combination of glufosinate and at least one herbicide in a composition, wherein the composition comprises glufosinate and at least one cyclohexene oxime class herbicide, and wherein the composition comprises the cyclohexene oxime class herbicide in an amount in the range of 100-400 g a.i. / L, preferably from 150 to 350 g a.i. / L, preferably 200-300 g a.i. / L.

[0195] In one embodiment, the present invention provides a method for controlling the weed Brachiaria decumbens in an area by treating said area with a combination of glufosinate and at least one herbicide, wherein the at least one herbicide is a cyclohexene oxime class herbicide and is applied at an application rate of 1-150 g a.i. / h, preferably at a rate of 10-100 g a.i. / h, more preferably 25-75 g a.i. / h.

[0196] In one embodiment, the present invention provides a method for controlling the weed Brachiaria decumbens in a site by treating said site with a combination of glufosinate and at least one herbicide in a composition, wherein the composition comprises glufosinate and at least one aryloxyphenoxypropionic acid class herbicide, and wherein the composition comprises the aryloxyphenoxypropionic acid class herbicide in an amount ranging from 1 to 250 g a.i. / L, preferably 10-200 g a.i. / L, and more preferably 50-150 g a.i. / L.

[0197] In one embodiment, the present invention provides a method for controlling the weed Brachiaria decumbens in an area by treating said area with a combination of glufosinate and at least one herbicide, wherein the at least one herbicide is an aryloxyphenoxypropionic acid class herbicide and is applied at an application rate of 1-150 g a.i. / h, preferably at a rate of 10-100 g a.i. / h, and more preferably at a rate of 25-75 g a.i. / h.

[0198] In one embodiment, the present invention provides a method for controlling the weed Brachiaria decumbens in a site by treating said site with a combination of glufosinate and at least one herbicide in a composition, wherein the composition comprises a combination of glufosinate and at least one herbicide of the triazolone class, wherein the composition comprises the herbicide of the triazolone class in an amount in the range of 100-800 g a.i. / L, preferably from 200 to 600 g a.i. / L, more preferably from 300 to 500 g a.i. / L.

[0199] In one embodiment, the present invention provides a method for controlling the weed Brachiaria decumbens in an area by treating said area with a combination of glufosinate and at least one herbicide, wherein the at least one herbicide is a triazolone class herbicide, applied at an application rate of 0.5-100 g a.i. / h, preferably at a rate of 1-50 g a.i. / h, more preferably 2-30 g a.i. / h.

[0200] In one embodiment, the present invention provides a method for controlling weedsBrachiaria decumbens in a site by treating said site with a combination of glufosinate and at least one herbicide in a composition, wherein the composition comprises a combination of glufosinate and at least one uracil class herbicide, wherein the composition comprises the uracil class herbicide in an amount in the range of 1-1000 g a.i. / L, preferably from 50 to 800 g a.i. / L.

[0201] In one embodiment, the present invention provides a method for controlling the weed Brachiaria decumbens in an area by treating said area with a combination of glufosinate and at least one herbicide, wherein the at least one herbicide is a uracil class herbicide, applied at an application rate of 0.5-500 g a.i. / hr, preferably at a rate of 10-400 g a.i. / hr.

[0202] The compositions of the present invention can be used on agricultural lands such as fields, rice fields, lawns and gardens, or on non-agricultural lands. The present invention can be used to control diseases in agricultural lands when growing plants without any phytotoxicity to the plant. Examples of agricultural crops on which the present combinations can be used include, but are not limited to, corn, rice, wheat, barley, rye, oats, sorghum, cotton, soybeans, peanuts, buckwheat, beets, rapeseed, sunflower, sugarcane, tobacco, etc.; Vegetables: Nightshade vegetables such as eggplant, tomato, red pepper, bell pepper, potato, etc.; Melon vegetables such as cucumber, pumpkin, squash, watermelon, melon, zucchini, etc.; Cruciferous vegetables such as radish, white turnip, horseradish, kohlrabi, Chinese cabbage, white cabbage, mustard greens, broccoli, cauliflower, etc., Asteraceae vegetables such as burdock, daisy, artichoke, lettuce, etc., Liliaceae vegetables such as green onions, onions, garlic, and asparagus, Ammoniaceae vegetables such as carrots, parsley, celery, parsnips, etc., Amaranthaceae vegetables such as spinach, Swiss chard, etc., Chenopodium vegetables such as perilla, mint, basil, etc., strawberries, sweet potatoes, Japanese yam, taro, etc., flowers, foliage plants, lawn grasses, fruits: pome fruits such as apples, pears, quince, etc., stone fruits such as peach, plum, nectarine, prune, cherry fruits, apricot, prune, etc., citrus fruits such as orange, lemon, lime, grapefruit, and etc., nuts such as chestnuts, walnuts, hazelnuts, almonds, pistachios, cashew nuts, macadamia nuts, etc., berries such as blueberries, cranberries, blackberries, raspberries, etc., grapes, persimmons, olives, plums, bananas, coffee, date palm, coconuts, etc., trees other than fruit trees; tea, mulberry, flowering plant, trees such as ash, birch, dogwood, eucalyptus, ginkgo biloba, lilac, maple, oak, poplar, Judas tree, sweetgum, sycamore, zelkova, thuja japonica, spruce, hemlock, juniper, pine, fir, yew, etc.

[0203] In one embodiment, the present invention provides a synergistic composition for controlling weedsBrachiaria decumbens, comprising glufosinate and at least one herbicide selected from:

[0204] (a) nitrophenyl ether herbicides;

[0205] (b) imidazolinone class herbicides;

[0206] (c) organophosphorus herbicides;

[0207] (d) dicarboximide class herbicides;

[0208] (e) phenoxyacetic acid class herbicides;

[0209] (f) pyridine herbicides;

[0210] (g) cyclohexene oxime class herbicides;

[0211] (h) aryloxyphenoxypropionic acid class herbicides;

[0212] (i) triazolone class herbicides;

[0213] (j) herbicides of the uracil class,

[0214] and their combinations.

[0215] In one embodiment, the present invention provides a synergistic composition for controlling weedsBrachiaria decumbens, comprising L-glufosinate and at least one herbicide selected from:

[0216] (a) herbicides of the nitrophenyl ether class;

[0217] (b) imidazolinone class herbicides;

[0218] (c) organophosphorus herbicides;

[0219] (d) herbicides of the dicarboximide class;

[0220] (e) phenoxyacetic acid class herbicides;

[0221] (f) pyridine class herbicides;

[0222] (g) cyclohexene oxime class herbicides;

[0223] (h) aryloxyphenoxypropionic acid class herbicides;

[0224] (i) triazolone class herbicides;

[0225] (j) herbicides of the uracil class,

[0226] and their combinations.

[0227] In one embodiment, the weight ratio of glufosinate and at least one herbicide is in the range of 1:100 to 100:1.

[0228] In one embodiment, the weight ratio of L-glufosinate and at least one herbicide is in the range of 1:100 to 100:1.

[0229] In another embodiment, the weight ratio of glufosinate and at least one herbicide is from 1:75 to 75:1.

[0230] In one embodiment, the weight ratio of glufosinate and at least one herbicide is in the range of 1:50 to 50:1.

[0231] In one embodiment, the weight ratio between glufosinate and at least one herbicide is in the range of 1:25 to 25:1, more preferably 1:10 to 10:1.

[0232] In one embodiment, the weight ratio of glufosinate and at least one herbicide is in the range of 1:5 to 5:1.

[0233] In one embodiment, the weight ratio of glufosinate and at least one herbicide is in the range of 1:2 to 2:1.

[0234] In one embodiment, glufosinate is present in the composition in an amount ranging from 100 to 400 g a.i. / L, preferably from 180 to 380 g a.i. / L.

[0235] In one embodiment, at least one herbicide selected from:

[0236] (a) a nitrophenyl ether class herbicide, present in an amount in the range of 100 to 400 g a.i. / L, preferably 140 to 340 g a.i. / L;

[0237] (b) an imidazolinone class herbicide, present in an amount ranging from 10 to 250 g a.i. / L, preferably 50 to 200 g a.i. / L;

[0238] (c) an organophosphorus herbicide, present in an amount ranging from 200 to 1000 g a.i. / L, preferably from 400 to 800 g a.i. / L;

[0239] (d) a dicarboximide class herbicide, present in an amount in the range of 200 to 800 g a.i. / L, preferably from 300 to 700 g a.i. / L;

[0240] (e) a phenoxyacetic acid class herbicide, present in an amount ranging from 400 to 1200 g a.i. / L, preferably 600 to 1000 g a.i. / L;

[0241] (f) a pyridine class herbicide, present in an amount in the range of 300 to 1000 g a.i. / L, preferably from 400 to 900 g a.i. / L;

[0242] (g) a cyclohexene oxime class herbicide, present in an amount in the range of 100 to 400 g a.i. / L, preferably from 150 to 350 g a.i. / L;

[0243] (h) the aryloxyphenoxypropionic acid class herbicide is present in an amount ranging from 1 to 250 g a.i. / L, preferably 10 to 200 g a.i. / L;

[0244] (i) a triazolone class herbicide, present in an amount in the range of 100 to 800 g a.i. / L, preferably from 200 to 600 g a.i. / L; and / or

[0245] (j) a uracil class herbicide, present in an amount in the range of 1-1000 g a.i. / L, preferably from 50 to 800 g a.i. / L.

[0246] In another embodiment, the present invention provides a synergistic composition for controlling weeds of Brachiaria decumbens, comprising glufosinate; an imidazolinone herbicide and a triazolone herbicide.

[0247] In a preferred embodiment, the herbicide selected from the imidazolinone class of herbicides is imazethapyr, and the herbicide selected from the triazolone class of herbicides is carfentrazone.

[0248] In one embodiment, a herbicide selected from the imidazolinone class of herbicides and a herbicide selected from the triazolone class of herbicides are present in the composition in a ratio of 1:100 to 100:1, more preferably 1:10 to 10:1.

[0249] In one embodiment, the compositions of the present invention further comprise one or more agrochemically suitable excipients, such as adjuvants, additives or a carrier, along with other ingredients, such as surfactants.

[0250] In one embodiment, the present invention provides a synergistic composition for controlling weedsBrachiaria decumbens, comprising glufosinate, at least one herbicide selected from:

[0251] (a) herbicides of the nitrophenyl ether class;

[0252] (b) imidazolinone class herbicides;

[0253] (c) organophosphorus herbicides;

[0254] (d) dicarboximide class herbicides;

[0255] (e) phenoxyacetic acid class herbicides;

[0256] (f) pyridine class herbicides;

[0257] (g) cyclohexene oxime class herbicides;

[0258] (h) aryloxyphenoxypropionic acid class herbicides;

[0259] (i) triazolone class herbicides;

[0260] (j) uracil class herbicides,

[0261] and their combinations;

[0262] and at least one agrochemically acceptable filler.

[0263] In one embodiment, the present invention provides a synergistic composition for controlling weedsBrachiaria decumbens, comprising L-glufosinate, at least one herbicide selected from:

[0264] (a) herbicides of the nitrophenyl ether class;

[0265] (b) imidazolinone class herbicides;

[0266] (c) organophosphorus herbicides;

[0267] (d) dicarboximide class herbicides;

[0268] (e) phenoxyacetic acid class herbicides;

[0269] (f) pyridine herbicides;

[0270] (g) cyclohexene oxime class herbicides;

[0271] (h) aryloxyphenoxypropionic acid class herbicides;

[0272] (i) triazolone class herbicides;

[0273] (j) herbicides of the uracil class,

[0274] and their combinations;

[0275] and at least one agrochemically acceptable filler.

[0276] The agrochemically acceptable excipient may be any one or a combination of adjuvants, co-solvents, surfactants, colorants, dispersants, emulsifiers, thickeners, antifreezes, biocides, antifoams, stabilizers, wetting agents, or mixtures thereof, which may be optionally added to the composition of the present invention.

[0277] The surfactants may be selected from nonionic, anionic and cationic surfactants and combinations thereof.

[0278] Examples of nonionic surfactants include polyarylphenol polyethoxy ethers, polyalkylphenol polyethoxy ethers, saturated fatty acid polyglycol ether derivatives, unsaturated fatty acid polyglycol ether derivatives, aliphatic alcohol polyglycol ether derivatives, cycloaliphatic alcohol polyglycol ether derivatives, polyoxyethylene sorbitan fatty acid esters, alkoxylated vegetable oils, alkoxylated acetylenic diols, polyalkoxylated alkyl phenols, fatty acid alkoxylates, sorbitan alkoxylates, sorbitan esters, C8-C 22alkyl or alkenyl polyglycosides, polyalkoxystyryl ethers, alkylamine oxides, block copolymer ethers, polyalkoxylated fatty glycerides, polyalkylene glycol ethers, linear aliphatic or aromatic polyesters, organosilicones, polyarylphenols, sorbitan ester alkoxylates, polyalkylene oxide block copolymers, acrylic copolymers and ethylene glycol mono- and diesters and mixtures thereof.

[0279] Examples of anionic surfactants include alcohol sulfates, alcohol ether sulfates, alkyl aryl ether sulfates, alkyl aryl sulfonates such as alkyl benzene sulfonates and alkyl naphthalene sulfonates and their salts, alkyl sulfonates, mono- or diphosphate esters of polyalkoxylated alkyl alcohols or alkyl phenols, mono- or disulfosuccinate esters of C 12 -WITH 15 alkanols or polyalkoxylated C 12 -WITH 15alkanols, alcohol ether carboxylates, phenol ether carboxylates, polybasic acid esters of ethoxylated polyoxyalkylene glycols consisting of oxybutylene or a tetrahydrofuran residue, sulfoalkylamides and their salts such as sodium N-methyl-N-oleoyl taurate, polyoxyalkylene alkyl phenol carboxylates, polyoxyalkylene alcohol alkyl carboxylates, polyglycoside / alkenyl succinic anhydride condensation products, alkyl ether sulfates, naphthalene sulfonates, naphthalene formaldehyde condensates, alkyl sulfonamides, sulfonated aliphatic polyethers, sulfate esters of styryl phenyl alkoxylates and sulfonate esters of styryl phenyl alkoxylates and their corresponding sodium, potassium, calcium, magnesium, zinc ammonium, alkyl ammonium salts, diethanolammonium or triethanolammonium, salts of lignin sulfonic acid such as sodium, potassium, magnesium, calcium or ammonium salt, polyarylphenol polyalkoxyether sulfates and polyarylphenol polyalkoxyether phosphates,as well as sulfated alkylphenol ethoxylates and phosphated alkylphenol ethoxylates.

[0280] Cationic surfactants include C8-C fatty alkanolamides 18 -acids and polyalkoxylates of fatty C8-C 18 -amines, chlorides C 10 -WITH 18 -alkyl dimethyl benzyl ammonium, coconut alkyl dimethyl aminoacetic acids and C8-C fatty acid polyalkoxylate phosphate esters 18 -amines.

[0281] Emulsifiers that can be advantageously used in this document can be readily determined by those skilled in the art and include various nonionic, anionic, cationic and amphoteric emulsifiers, or mixtures of two or more emulsifiers. Examples of nonionic emulsifiers useful in the preparation of emulsifiable concentrates include polyalkylene glycol ethers and condensation products of alkyl and aryl phenols, aliphatic alcohols, aliphatic amines or fatty acids with ethylene oxide, propylene oxides such as ethoxylated alkyl phenols and carboxylic acid esters solubilized with a polyol or polyoxyalkylene. Cationic emulsifiers include quaternary ammonium compounds and fatty amine salts. Anionic emulsifiers include oil-soluble salts (e.g., calcium) of alkyl aryl sulfonic acids, oil-soluble salts or sulfated polyglycol ethers, and the corresponding salts of phosphated polyglycol ether.

[0282] In one embodiment, the colorants include iron oxide, titanium oxide and Prussian blue, and organic colorants such as alizarin dyes, azo dyes or phthalocyanine metal dyes and micronutrients such as iron, manganese, boron, copper, cobalt, molybdenum and zinc salts.

[0283] Another embodiment includes the addition of a thickening agent or binder, which may be selected from, but not limited to, molasses, granulated sugar, alginates, karaya gum, jaguar gum, tragacanth, polysaccharide gum, mucilage, xanthan gum, or a combination thereof. 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 ethyl celluloses and methyl celluloses, hydroxymethyl celluloses, hydroxypropyl celluloses, hydroxymethyl propyl celluloses, polyvinylpyrrolidones, dextrins, maltodextrins, polysaccharides, fats, oils, proteins, gum arabic, shellacs, vinylidene chloride, vinylidene chloride copolymers, calcium lignosulfonates, acrylic copolymers, starches, polyvinyl acrylates, zeins, gelatin, carboxymethyl cellulose, chitosan, polyethylene oxide, acrylimide polymers and copolymers, polyhydroxyethyl acrylate, methyl acrylimide monomers,alginate, ethylcellulose, polychloroprene and syrups or mixtures thereof; polymers and copolymers of vinyl acetate, methylcellulose, vinylidene chloride, acrylic, cellulose, polyvinylpyrrolidone and polysaccharide; polymers and copolymers of vinylidene chloride and copolymers of vinyl acetate and ethylene; combinations of polyvinyl alcohol and sucrose; plasticizers such as glycerol, propylene glycol, polyglycols.

[0284] In another embodiment, the antifreeze agent(s) added to the composition may be alcohols selected from the group consisting of, 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, trimethylolpropane, mannitol, sorbitol, glycerin, pentaerythritol, 1,4-cyclohexanedimethanol, xylenol, bisphenols such as bisphenol A or the like. In addition, alcohol ethers such as diethylene glycol, triethylene glycol, tetraethylene glycol, polyoxyethylene or polyoxypropylene glycols with a molecular weight of up to approximately 4000, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, triethylene glycol monomethyl ether, butoxyethanol, butylene glycol monobutyl ether, dipentaerythritol, tripentaerythritol, tetrapentaerythritol, diglycerol, triglycerol, tetraglycerol, pentaglycerol, hexaglycerol, heptaglycerol and octaglycerol.

[0285] According to an embodiment, the biocides include benzothiazoles, 1,2-benzisothiazolin-3-one, sodium dichloro-s-triazinetrione, sodium benzoate, potassium sorbate, 1,2-phenylisothiazolin-3-one, and butyl interchloroxylenol paraoxybenzoate.

[0286] According to an embodiment, the antifoaming agents include polydimethoxysiloxane, polydimethylsiloxane, alkyl polyacrylates, castor oil, fatty acids, fatty acid esters, fatty acid sulfates, fatty alcohols, fatty alcohol esters, fatty alcohol sulfates, olive oil, mono- and diglycerides, paraffin oil, paraffin wax, polypropylene glycol, silicone oil, vegetable and animal fats, vegetable and animal fat sulfates, vegetable and animal oils, vegetable and animal oil sulfates, vegetable and animal waxes, vegetable and animal wax sulfates, silicon or magnesium stearate-based agents, and combinations thereof.

[0287] Typical organic liquids that can be used in the preparation of the emulsifiable concentrate include, for example, aromatic liquids such as xylene, propylbenzene fractions or mixed naphthalene fractions, mineral oils, substituted aromatic organic liquids such as dioctyl phthalate, kerosene, dialkylamides of various fatty acids, especially dimethylamides of fatty glycols and glycol derivatives such as n-butyl ether, ethyl ether or methyl ether of diethylene glycol and methyl ether of triethylene glycol. Mixtures of two or more organic liquids are also often used in the preparation of the emulsifiable concentrate. The formulations may also contain other compatible additives, such as plant growth regulators and other biologically active compounds used in agriculture.

[0288] The additives used in the composition include, for example, a solid carrier such as kaolinite, sericite, diatomite, slaked lime, calcium carbonate, talc, white carbon, kaolin, bentonite, clay, sodium carbonate, sodium bicarbonate, mirabilite, zeolite or starch; a solvent such as water, toluene, xylene, naphtha, dioxane, dimethyl sulfoxide, N,N-dimethylformamide, dimethylacetamide, N-methyl-2-pyrrolidone or alcohol;an anionic surfactant such as fatty acid salt, benzoate, polycarboxylate, alkyl sulfuric acid ester salt, alkyl sulfate, alkyl aryl sulfate, alkyl diglycol ether sulfate, alcohol sulfuric acid ester salt, alkyl sulfonate, alkyl aryl sulfonate, aryl sulfonate, lignin sulfonate, alkyl diphenyl ether disulfonate, polystyrene sulfonate, alkyl phosphoric acid ester salt, alkyl aryl phosphate, styryl aryl phosphate, polyoxyethylene alkyl ether sulfuric acid ester salt, polyoxyethylene alkyl aryl ether sulfate, polyoxyethylene alkyl aryl ether sulfuric acid ester salt, polyoxyethylene alkyl ether phosphate, polyoxyethylene alkyl aryl phosphoric acid ester salt, polyoxyethylene alkyl ether phosphoric acid ester salt, naphthalenesulfonic acid condensed with formaldehyde or a salt of alkylnaphthalenesulfonic acid condensed with formaldehyde;a nonionic surfactant such as sorbitan fatty acid ester, glycerol fatty acid ester, polyglyceride fatty acid, polyglycol fatty alcohol ether, acetylene glycol, acetylene alcohol, oxyalkylene block polymer, polyoxyethylene alkyl ether, polyoxyethylene alkyl aryl ether, polyoxyethylene styryl ether, polyoxyethylene glycol alkyl ether, polyethylene glycol, polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene glycerol fatty acid ester, polyoxyethylene hydrogenated castor oil fatty acid ester or polyoxypropylene;and a vegetable oil or mineral oil such as olive oil, kapok oil, castor oil, palm oil, camellia oil, coconut oil, sesame oil, corn oil, rice bran oil, peanut oil, cottonseed oil, soybean oil, rapeseed oil, linseed oil, tung oil or liquid paraffins. These additives may be selected for use individually or in combination as a mixture of two or more of them, as long as the object of the present invention is achieved. In addition, additives other than those mentioned above may be suitably selected for use from among those known in the art. For example, various commonly used additives such as a filler, a thickener, an anti-settling agent, an anti-freezing agent, a dispersion stabilizer, an antiseptic, an anti-mildew agent, an anti-bubbling agent, a disintegrator and a binder may be used.

[0289] The agrochemical composition may also contain one or more antioxidants. Preferably, the agrochemical composition contains antioxidants. Antioxidants are, for example, amino acids (e.g. glycine, histidine, tyrosine, tryptophan) and their derivatives, imidazole and imidazole derivatives (e.g. urocanic acid), peptides such as, for example, D,L-carnosine, D-carnosine, L-carnosine and its derivatives (e.g. anserine), carotenoids, carotenes (e.g. α-carotene, β-carotene, lycopene) and their derivatives, lipoic acid and its derivatives (e.g. dihydrolipoic acid), aurothioglucose, propylthiouracil and other thio compounds (e.g. thioglycerol, thiosorbitol, thioglycolic acid, thioredoxin, glutathione, cysteine, cystine, cystamine and their glycosyl, N-acetyl, methyl, ethyl, propyl, amyl, butyl, lauryl, palmitoyl, oleyl, γ-linoleyl, cholesterol and glyceryl esters) and their salts, dilauryl thiodipropionate, distearyl thiodipropionate,thiodipropionic acid and their derivatives (esters, ethers, peptides, lipids, nucleotides, nucleosides and salts) and sulfoximine compounds (e.g. buthionine sulfoximines, homocysteine ​​sulfoximine, buthionine sulfones, penta-, hexa-, heptathionine sulfoximine) at very low tolerated doses (e.g. pmol / kg to pmol / kg), as well as metal chelating agents (e.g. α-hydroxy fatty acids, EDTA, EGTA, phytic acid, lactoferrin), α-hydroxy acids (e.g. citric acid, lactic acid, malic acid), humic acids, bile acid, bile extracts, gallic acid esters (e.g. propyl, octyl and dodecyl gallate), flavonoids, catechins, bilirubin, biliverdin and their derivatives, unsaturated fatty acids and their derivatives (eg, γ-linolenic acid, linoleic acid, arachidonic acid, oleic acid), folic acid and its derivatives, hydroquinone and its derivatives (eg, arbutin), ubiquinone and ubiquinol and their derivatives,Vitamin C and its derivatives (e.g., ascorbyl palmitate, stearate, dipalmitate, acetate, magnesium ascorbyl phosphates, sodium and magnesium ascorbate, disodium ascorbyl phosphate and sulfate, potassium ascorbyl tocopheryl phosphate, chitosan ascorbate), isoascorbic acid and its derivatives, tocopherols and their derivatives (e.g., tocopheryl acetate, linoleate, oleate and succinate, tocophereth-5, tocophereth-10, tocophereth-12, tocophereth-18, tocophereth-50, tocophersolan), vitamin A and its derivatives (e.g., vitamin A palmitate), benzoin gum coniferyl benzoate, rutin, rutinic acid and its derivatives, disodium rutinyl disulfate, cinnamic acid and its derivatives (e.g., ferulic acid, ethyl ferulate, caffeic acid), kojic acid, chitosan glycolate and salicylate, butylated hydroxytoluene, butylated hydroxyanisole, nordihydroguaiac acid, nordihydroguaiaretic acid, trihydroxybutyrophenone, uric acid and its derivatives, mannose and its derivatives, selenium and selenium derivatives (eg, selenomethionine),stilbenes and stilbene derivatives (e.g., stilbene oxide, trans-stilbene oxide). According to the invention, suitable derivatives (salts, esters, sugars, nucleotides, nucleosides, peptides, and lipids) and mixtures of the said active ingredients or plant extracts (e.g., tea tree oil, rosemary extract, and rosmarinic acid) containing these antioxidants can be used. In general, mixtures of the aforementioned antioxidants are possible.

[0290] According to an embodiment, examples of solvents are water, aromatic solvents (e.g. Solvesso products, xylene), paraffins (e.g. mineral oil fractions such as kerosene or diesel fuel), coal oils and oils of vegetable or animal origin, aliphatic, cyclic and aromatic hydrocarbons such as toluene, xylene, paraffin, tetrahydronaphthalene, alkylated naphthalenes or derivatives thereof, alcohols (e.g. methanol, butanol, pentanol, benzyl alcohol, cyclohexanol), ketones (e.g. cyclohexanone, gamma-butyrolactone), pyrrolidones (NMP, NEP, NOP), acetates (glycol diacetate), glycols, fatty acid dimethylamides, fatty acids and fatty acid esters, isophorone and dimethyl sulfoxide. In principle, solvent mixtures can also be used.

[0291] According to an embodiment, typical surfactants are alkali, alkaline earth metal and ammonium salts of lignosulfonic acid, naphthalenesulfonates, phenolsulfonic acid, dibutylnaphthalenesulfonic acid, alkyl aryl sulfonates, alkyl sulfonates, alkyl sulfonates, fatty alcohol sulfates, fatty acids and sulfated fatty alcohol glycol ethers, furthermore, condensates of sulfonated naphthalene and naphthalene derivatives with formaldehyde, condensates of naphthalene or naphthalene sulfonic acid with phenol and formaldehyde, polyoxyethylene octylphenol ethers, ethoxylated isooctylphenol, octylphenol, nonylphenol, alkyl phenol polyglycol ethers, tributylphenyl polyglycol ethers, tristearylphenyl polyglycol ethers, Alkyl aryl polyglycol ether alcohols, alcohol and fatty alcohol / ethylene oxide condensates, ethoxylated castor oil, polyoxyethylene alkyl ethers, ethoxylated polyoxypropylene,polyglycol ether lauryl alcohol acetal, sorbitan esters, lignosulfite waste solutions and methylcellulose.,

[0292] According to an embodiment, examples of carriers are mineral earths such as silica gels, silicates, talc, kaolin, attapulgite, limestone, lime, chalk, bole, loess, clay, dolomite, diatomite, calcium sulfate, magnesium sulfate, magnesium oxide, ground synthetic materials, fertilizers such as, for example, ammonium sulfate, ammonium phosphate, ammonium nitrate, urea and plant products such as grain flour, bark flour, wood flour and nut shell flour, cellulose powders, polyvinylpyrrolidone and other solid carriers).

[0293] Examples of preservatives are, for example, 1,2-benzothiazolin-3-one and / or 2-methyl-2H-isothiazol-3-one, or sodium benzoate, or benzoic acid.

[0294] In one embodiment, the composition can be in any form suitable for storage and application to the soil from an agricultural perspective. The compositions can be obtained by mixing the active ingredients in the composition with an inert carrier and adding surfactants and other adjuvants and carriers as needed and formulated into solid or liquid formulations, including, but not limited to, wettable powders, granules, powders, soluble (liquid) concentrates, suspension concentrates, oil-in-water emulsions, water-in-oil emulsions, emulsifiable concentrates, capsule suspensions, ZC formulations, oil dispersions or other known types of formulations. The composition can also be used to treat plant propagation material, such as seeds, etc.

[0295] In one embodiment, a method of controlling target weeds comprises:

[0296] i. producing a premix or tank mix of glufosinate and at least one herbicide; and

[0297] ii. application of the obtained premix or tank mix to the desired area.

[0298] The compositions of the present invention can be applied simultaneously as a tank mix or formulation, or can be applied sequentially. Application to the soil can be made before plant emergence, either before planting or after planting. Application to the soil can be made after plant emergence. Application can be made as a foliar spray at various stages of crop development, with one or more applications early or late after emergence. The herbicidal compositions of the invention can also be applied to the soil before, during, or after sowing of crop seeds. Such combinations, as described above, can be applied to the weed growing area in a herbicidally effective amount.

[0299] In one embodiment, the method includes using a composition comprising glufosinate and at least one herbicide as a tank mix.

[0300] In one embodiment, the method includes using a composition comprising glufosinate and at least one herbicide as a premix.

[0301] In one embodiment, the method comprises immediately sequentially applying glufosinate and at least one herbicide.

[0302] The compositions of the present invention can be applied by any known methods or conventional methods known to those skilled in the art. Non-limiting examples of such methods include foliar spraying, basal bark spraying, stem injection, drilling and filling, axe cutting, stump cutting, cutting and tamponing, stem scraping, wick application, etc. The compositions of the present invention are used in a conventional manner, such as by watering, spraying, nebulizing, dusting, or sprinkling.The said compositions may be applied to the growing area using conventional ground sprayers, granular applicators, watering (pouring), drip irrigation, spraying, atomizing, scattering, dusting, foaming, spreading, aerial spraying methods, aerial application methods, application methods using modern technologies such as, among others, drones, robots and other traditional means known to those skilled in the art.

[0303] In one embodiment, the present invention provides a method for increasing crop yield by using the synergistic herbicide combination described herein.

[0304] In one embodiment, the present invention provides a method for improving plant health by using the synergistic herbicide combination described herein.

[0305] The herbicide combinations / compositions of the present invention are very safe for agricultural plants and are capable of controlling problematic target weeds, such as in rice fields, raised fields or non-agricultural fields, in a wide range from pre-emergence to post-emergence.

[0306] The present invention is described in more detail in the following examples, which are intended for illustrative purposes only, as numerous modifications and variations within the scope of the present invention will be apparent to those skilled in the art. Unless otherwise indicated, all parts, percentages, and ratios given in the following examples are by weight, and all reagents used in the examples were obtained from or available from chemical suppliers.

[0307] The following examples illustrate the composition, main effect and main methodology of the present invention.

[0308] Examples

[0309] The following examples demonstrate the present invention.

[0310] Composition

[0311] The following active ingredient compounds were used in the present invention to prepare combinations / compositions of L-glufosinate with other herbicides.

[0312] Active ingredient A.I. dose, g / l L-glufosinate 280 Oxyfluorfen 240 Imazethapyr 106 Carfentrazone 400 Glyphosate 648 Flumioxazine 500 2,4-D 670 Triclopyr 480 Clethodim 240 Haloxyfop 124,7

[0313] Evaluation of post-emergence herbicidal activity of the composition under field conditions

[0314] Methodology Greenhouse trials were conducted to evaluate the effectiveness of a combination of L-glufosinate and other herbicides on the weed Brachiaria decumbens.

[0315] The soil used was sandy loam - sand: 68.0%; silt: 8.0%; clay: 24.0%.

[0316] All treatments were carried out in 3 replicates per treatment with a spray volume of 150 l / h.

[0317] Rating

[0318] The expected efficacy of the combination of L-glufosinate and other herbicides was calculated using the well-established Colby method. Any difference between the observed and "expected" efficacy can be explained by synergism between the two compounds.

[0319] In the Colby method, the expected (or predicted) response of a herbicide combination is calculated by dividing the product of the observed response of each component of the combination when applied separately by 100 and subtracting this value from the sum of the observed responses of each component when applied separately. The unexpected increase in the effectiveness of the combination is then determined by comparing the observed response of the combination with the expected (or predicted) response calculated from the observed response of each component individually. If the observed response of the combination exceeds the expected (or predicted) response, or conversely, if the difference between the observed and expected responses is greater than zero, the combination is said to be synergistic or unexpectedly effective (Colby, SR, Weeds, 1967(15), p. 20-22). The Colby method requires only one dose of each herbicide applied separately, or a mixture of both doses.The formula used to calculate the expected efficacy (EE), which was compared with the observed efficacy (OE) to determine the efficacy of the present invention, is explained below.

[0320] The expected efficacy of the combination of two active ingredients is as follows:

[0321] EE = (A + B - (A x B) / 100)

[0322] The expected efficacy of the combination of three active ingredients is as follows:

[0323] EE = A + B + C - (AB + AC + BC) / 100 + ABC / 10,000,

[0324] where

[0325] A = Observed potency of active ingredient A at the same concentration used in the mixture.

[0326] B = Observed potency of active ingredient B at the same concentration used in the mixture.

[0327] C = Observed potency of the active ingredient C at the same concentration used in the mixture.

[0328]

[0329]

[0330]

[0331]

[0332] The results in Tables 1–4 clearly demonstrate the synergism between L-glufosinate and other herbicides. The large difference between the observed and expected efficacy clearly demonstrates the synergistic effect of the combination.

[0333] Although the foregoing written description of the invention enables one of ordinary skill to make and use what is currently considered the best embodiment thereof, those of ordinary skill will recognize and appreciate the existence of variations, combinations, and equivalents to the specific embodiment, method, and examples herein. Therefore, the invention should not be limited to the embodiments, method, and examples described above, but rather to all embodiments and methods within the scope and spirit of the invention.

Claims

1. A method for controlling weeds of Brachiaria decumbens in a field, comprising treating the field with a synergistic combination containing L-glufosinate and a second herbicide selected from: (a) a herbicide of the nitrophenyl ether class of oxyfluorfen; (b) an imidazolinone herbicide imazethapyr; (c) the organophosphorus herbicide glyphosate; (d) the dicarboximide herbicide flumioxazin; (e) a herbicide of the phenoxyacetic acid class 2,4-D; (f) a herbicide of the pyridine class triclopyr; (g) the cyclohexene oxime herbicide clethodim; (h) the aryloxyphenoxypropionic acid herbicide haloxyfop; (i) the triazolone herbicide carfentrazone; (j) the uracil class herbicide saflufenacil.

2. The method of claim 1, wherein the weight ratio of L-glufosinate to the second herbicide is from 1:75 to 75:

1.

3. The method according to claim 1 or 2, wherein L-glufosinate is present in an amount of from 100 to 400 g a.i. / l.

4. The method according to any one of claims 1 to 3, wherein L-glufosinate is present in an amount of from 180 to 380 g a.i. / l.

5. The method of claim 1, wherein the second herbicide is selected from: (a) a herbicide of the nitrophenyl ether class oxyfluorfen, present in an amount ranging from 100 to 400 g a.i. / l; (b) an imidazolinone herbicide, imazethapyr, present in an amount ranging from 10 to 250 g a.i. / l; (c) the organophosphorus herbicide glyphosate, present in an amount ranging from 200 to 1000 g a.i. / l; (d) a dicarboximide herbicide, flumioxazin, present in an amount in the range of 200-800 g a.i. / l; (e) a herbicide of the phenoxyacetic acid class 2,4-D, present in an amount ranging from 400 to 1200 g a.i. / l; (f) a pyridine herbicide, triclopyr, present in an amount in the range of 300-1000 g a.i. / l; (g) a cyclohexene oxime herbicide, clethodim, present in an amount in the range of 100-400 g a.i. / l; (h) an aryloxyphenoxypropionic acid herbicide, haloxyfop, present in an amount ranging from 1 to 250 g a.i. / l; (i) the triazolone herbicide carfentrazone present in an amount in the range 100-800 g a.i. / l; or (j) the uracil class herbicide saflufenacil present in an amount in the range of 1-1000 g a.i. / l.

6. The method according to any one of paragraphs 1-3, in which L-glufosinate is applied at an application rate of 150-350 g a.v. / ha.

7. The method according to any one of paragraphs 1-5, wherein the second herbicide is selected from: (a) a herbicide of the nitrophenyl ether class oxyfluorfen, applied at a rate of 50-150 g a.i. / ha; (b) an imidazolinone herbicide, imatezapyr, applied at a rate of 20 to 150 g a.i. / ha; (c) organophosphorus herbicide glyphosate, applied at a rate of 200-500 g a.i. / ha; (d) the dicarboximide herbicide flumioxazin, applied at a rate of 5-100 g a.i. / ha; (e) a herbicide of the phenoxyacetic acid class 2,4-D, applied at a rate of 100-300 g a.i. / ha; (f) the pyridine herbicide triclopyr applied at a rate of 100-400 g a.i. / ha; (g) cyclohexene oxime herbicide clethodim, applied at a rate of 10-100 g a.i. / ha; (h) the aryloxyphenoxypropionic acid herbicide haloxyfop, applied at a rate of 10-100 g a.i. / ha; (i) the triazolone herbicide carfentrazone applied at a rate of 1-50 g a.i. / ha; and / or (j) the uracil class herbicide saflufenacil applied at a rate of 10-400 g a.i. / ha.

8. The method according to paragraph 1, including: i. producing a premix or tank mix of L-glufosinate and a second herbicide; and ii. application of the resulting premix or tank mix to the desired area.

9. The method according to claim 1, comprising the direct sequential application of glufosinate and a second herbicide.

10. A weed control combination for Brachiaria decumbens comprising L-glufosinate and a second herbicide selected from (a) a herbicide of the nitrophenyl ether class of oxyfluorfen; (b) an imidazolinone herbicide imazethapyr; (c) the organophosphorus herbicide glyphosate; (d) the dicarboximide herbicide flumioxazin; (e) a herbicide of the phenoxyacetic acid class 2,4-D; (f) a herbicide of the pyridine class triclopyr; (g) the cyclohexene oxime herbicide clethodim; (h) the aryloxyphenoxypropionic acid herbicide haloxyfop; (i) the triazolone herbicide carfentrazone; (j) the uracil class herbicide saflufenacil.

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