RU2337547C1 - Herbicidal compound and weed vegetation control method - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: herbicidal compound containing as an active substance a synergically efficient mixture of the ammonium salt of the 2-methoxy-3,6-dichlorobenzoic acid (I) and ammonium salts of two herbicides from the row of substituted sulfonylureas (II and III), surfactants, glycol, and water. As the substituted sulfonylureas, chlorsulfuron (IIa) or tribenuron methyl (IIb) is used with metsulfuron methyl (III), the ratio I: (IIa or IIb): III being equal correspondingly to (19.0-19.3) : (1-3) : (0.68-2.1) according to acid equivalents. As surfactants the alkyldimethylamine oxide (ADMAO) or its mixture with synthanol BV or neonol 9-12, or polyoxyethylene ethers of fatty alcohols C₁₂-C₁₄ (ALM-10) is used, with the following ratios of the compound ingredients, wt %: ammonium salt of 2-methoxy-3,6-dichlorobenzoic acid according to the acid equivalent (ae) 27.0-38.0; ammonium salt of chlorsulfuron or tribenuron methyl (acc. to ae) 1.4-6.0; ammonium salt of metsulfuron methyl (acc. to ae) 0.95-4.2; surfactant 11-25; glycol 8.0 max; water being the remaining to 100.

EFFECT: invention allows to enhance product stability.

4 cl, 5 ex, 9 tbl

Description

The invention relates to chemical plant protection products intended for the destruction of weeds in crops, in particular to a herbicidal composition containing, as active substance, a mixture of 2-methoxy-3,6-dichlorobenzoic acid derivatives (dicamba) with herbicides from a number of substituted sulfonylureas.

Known synergistic herbicidal composition in grain crops, including the ammonium salt of 2-methoxy-3,6-dichlorobenzoic acid in an amount of 5.0-50 wt.%, Diethylethanolammonium salt of benzenesulfonylurea - 2.0-50%, surfactant - 1 , 0-5.0%, triethylene glycol 10-40% and water (RF patent No. 2040179). In one example, a mixture of dicamba salt with diethyl ethanolamine salts of two substituted sulfonylureas - chlorosulfuron + chlorosulfoxime (prototype) is characterized. As surfactants, the preparation according to the patent of the Russian Federation No. 2040179 contains bis-polyoxyethylated alkyl amines, sodium bis- (2-ethylhexyl) succinate sulfonate, monoalkyl ether of polyethylene glycol, alkylaryl ethers of polyethylene or polypropylene glycol.

The main disadvantage of this composition is the instability of the sulfonylurea component during storage.

The highest stability of liquid preparations based on dicamba and sulfonylurea herbicides is distinguished by the commercial drug Difesan, in the formulation of which ammonia is introduced to neutralize the so-called concomitant acids, usually present in technical dicamba, RF patent No. 2106782. However, it is also subject to partial decomposition, especially at high temperatures, which are difficult to avoid during prolonged storage of the drug.

In the patent of the Russian Federation No. 2236134 another variant of the water-glycol solution of diethylethanolammonium salt of dicamba in combination with the diethylethanolammonium salt of chlorosulfuron, which however does not solve the chemical stability problem of the sulfonylurea component, is described.

In practice, this problem is solved using factory binary packaging, that is, separately packaged dry (sulfonylureas) and liquid (dicamba) components, which are mixed immediately before using the herbicidal composition (US Pat. RF No. 2277775, Handbook of pesticides and agrochemicals approved for use on the territory of RF, Agrorus Publishing House, 2006, p.197-198).

In RF patent No. 2290811 a herbicidal composition based on 2-methoxy-3,6-dichlorobenzoic acid or its esters and substituted sulfonylureas in the form of an emulsifiable concentrate is described.

The disadvantage of this form is the use of an organic solvent, which represents an additional environmental burden on the soil and plants when using the drug. Information on chemical stability during prolonged storage of the drug in the description of the invention is also missing.

The object of the present invention is a new herbicidal composition containing as an active substance a mixture of three components:

I ammonium salt of 2-methoxy-3,6-dichlorobenzoic acid (dicamba),

II ammonium salts of chlorosulfuron (IIa) or tribenuron-methyl (IIb),

III ammonium salts of metsulfuron methyl.

The ratio of components 1: (IIa or IIb): III is (19.0-19.3): (1-3): (0.68-2.1) in acid equivalents.

As ammonium salts of dicamba and substituted sulfonylureas, dimethylethanolammonium, diethylethanolammonium, triethanolammonium or monoethanolammonium salts are used.

The herbicidal compositions of the present invention are in the form of aqueous or aqueous glycol solutions. Water-glycol solutions contain not more than 8 wt.% Ethylene glycol or propylene glycol, or triethylene glycol in the formulation.

The chemical stability of the herbicidal composition is ensured by introducing in its formulation as a surfactant and at the same time stabilizer of alkyldimethylamine oxide (OADMA) in an amount of 5 to 25 wt.%, Which is also used in a mixture with other surfactants, such as syntanol BV, neonol 9-12 and ALM-10.

The following is information about surfactants and glycols used in the herbicidal composition in accordance with the present invention.

OADMA - alkyldimethylamine oxide [OA, alkyldimethylamino oxide]

C _n H _{2n + 1} (CH ₃ ) ₂ NO, n = 10 ÷ 18

(Handbook "Surface-active substances", edited by A. A. Abramzon, publishing house "Chemistry", Leningrad, 1979, p. 298);

ALM-10 (syntanol) - a mixture of polyoxyethylene glycol ethers of synthetic primary fatty alcohols C ₁₂ -C ₁₄ .

Mass fraction of hydroxyethyl groups:

ALM-10 - 69 ± 3% (TU 2483-064-05015207-99);

Neonol AF 9-12 - Ethoxylated Nonylphenol

С ₉ Н ₁₉ С ₆ Н ₄ O (С ₂ Н ₄ O) _n Н, n = 9-12

(TU 2483-077-5766801-98);

Syntanol BV - a mixture of ethoxylated fatty alcohols C _n H _{2n + 1} O (C ₂ H ₄ O) _m H, n = 10-18, m = 7-12 (TU 6-36-5744684-85-90);

Triethylene glycol is a by-product of the production of ethylene and diethylene glycol.

(GOST 6-01-5-88);

Ethylene glycol - dihydric alcohol (ethanediol)

(GOST 19710-83);

Propylene glycol - 1,2-propanediol

(TU 2422-069-05766801-97).

The herbicidal composition in the form of water-glycol or aqueous solutions contains the constituent components in the following amounts, wt.%:

Ammonium salt of 2-methoxy-3,6-dichlorobenzoic acid by acid equivalent (ke) 27.0-38.0 Ammonium salt of chlorosulfuron or tribenuron-methyl by ke 1.4-6.0 CE Metsulfuron Methyl Ammonium Salt 0.95-4.2 Surface-active substance, 11 -25 including OADMA 5-25 Glycol no more 8% Water the rest is up to 100

The herbicidal compositions in accordance with the present invention are stable during storage and transportation and retain herbicidal activity for a long time, including at high and low ambient temperatures.

New herbicidal compositions have a wider spectrum of action compared to the prototype while reducing the application rate of each component of the mixture separately.

Herbicidal compositions in accordance with the present invention suppress or destroy, depending on the consumption rate and the degree of sensitivity, such weeds in crops of crops, such as southern akalifa, ragweed, ragweed, chandra crest, thrown backworm, mint, raw, amaranth, white gauze, bedstraw, sow thistle yellow, sow thistle pink (Cirsium arvensis), cassock, morning glory, mountaineer potato, sisezbekia fluffy, mustard, nightshade, asterisk, veronica, violet, sodacea, field bindweed, sorrel, wormwood, angelfish, tori and field and others.

Another object of the invention is a method of controlling weeds in crops of crops, preferably cereals, in which a herbicidal composition containing as active substance a synergistically effective mixture of ammonium salts of dicamba (I), ammonium salts of chlorosulfuron (IIa) or tribenuron- methyl (IIb) and ammonium salts of metsulfuron-methyl (III) in the form of water-glycol or aqueous solutions are applied in effective amounts to the weeds to be destroyed or their habitat Niya.

The following are examples illustrating the invention.

Example 1. Obtaining water-glycol solutions and aqueous solutions (AGR and BP).

Water, amine and dicamba were charged into a stirred reactor. Stirred for 5-10 minutes until the dicamba was completely dissolved. Then, chlorosulfuron (or tribenuron-methyl), metsulfuron-methyl was charged into the resulting solution, and stirred for 10-15 minutes. Then glycols (or water), surfactants were added and further mixed for 5-6 minutes. The process was carried out at a temperature of 30-40 ° C.

The formulations of the obtained herbicidal compositions are presented in table 1.

Example 2. Herbicidal activity of the compounds in the growing experiments.

Biological tests of herbicidal compositions, the compositions of which are shown in table 1, were carried out in a laboratory chamber of an artificial climate (VCI) on test plants of a cocklebur.

In the vegetation experiments, a testilla (Xanthium sibiricum Patrin ex Willd) was grown in paper waxed cups with a diameter of 100 mm, a capacity of 600 cm ³ , filled with a mixture of sod-podzolic soil, sand and peat in a weight ratio of 1: 1: 1.

When growing test plants and conducting an experiment in a climate chamber, a controlled regime was maintained: illumination of 20 thousand lux for 16 hours (day), without illumination - 8 hours (night) per day, air temperature 25 ° C during the day and 20 ° C at night , relative humidity of 70%, soil moisture 60% of PV, supported by daily normalized irrigation by weight of vegetation vessels.

After careful rejection of plants by height and phase of development, 2 plants were left in each vessel.

Herbicidal compositions and reference samples were applied to the phase of 2 real leaves of fruit bush using a laboratory sprayer developed by VNIIF (Chemistry in Agricultural Science, 1985, No. 7). The flow rate of the working fluid is 400 l / ha, the average droplet size is ~ 180 microns. The repetition of vegetation experiments is fivefold.

The effectiveness of the herbicidal compositions was evaluated 14 days after treatment in comparison with the untreated control by the difference in the wet weight of the aerial parts of plants.

Indicators of the herbicidal activity of the compositions based on derivatives of dicamba, chlorosulfuron and metsulfuron methyl; dicamba, tribenuron-methyl and metsulfuron-methyl, as well as standards - compositions based on dicamba and chlorosulfuron or tribenuron-methyl without metsulfuron-methyl and separately individual metsulfuron-methyl are shown in tables 2 and 3.

The synergistic effect is calculated by the formula: E = E _e -E ₀ ,

where E is the synergistic effect of the compositions;

E _e - the percentage of death of weeds from the composition, experiment;

E ₀ - the expected percentage of death of weeds.

The expected percentage of death of weeds was calculated according to the Colby formula (Colby J.R., Weeds, 1967, v. 15, N 1, p.20-22):

,

,

where X is the percentage of death of weeds from the composition without Metsulfuron methyl;

Y is the percentage of death of weeds from Metsulfuron methyl.

Example 3. The effect of herbicidal compositions on the species sensitivity of weeds in the field.

Field plot experiments were carried out in the Moscow region in the spring wheat cultivars of the Enita variety.

The weed cenosis was dominated by fragrant chamomile, white gauze, field torus, chickweed picnic, field sow thistle, field calf, middle asterisk.

Herbicidal compositions and standards for them were applied in the form of solutions to the tillering phase of the culture using an OD-2 experimental sprayer designed by VNIIF (Bulletin of the Russian Academy of Agricultural Sciences, 1993, No. 3). The consumption rate of the working solution is 200 l / ha.

The plot area is 20.0 m ² , 4-fold repetition, the allocation of plots is randomized.

Soil: sod-podzolic with a humus content of 2.5%, pH _V0D = 5.3.

Agrotechnics: the predecessor is black steam, agricultural practices generally accepted for the Moscow region.

Accounting for weeds in the experimental and control plots was carried out before spraying and 30 days after the herbicidal treatment. The accounting areas of 0.1 m ² in the amount of three were located on the diagonal of each plot in 4 replicates of all options.

The test results are presented in tables 4 and 5.

The synergistic effect for each type of prevailing weed is calculated by the Colby formula.

Example 4. Tests of the biological and economic efficiency of the application of herbicidal compositions in the field.

Field experiments were carried out in the conditions of the Moscow region in crops of barley cultivar Moskovsky 2.

The weevil cenosis was dominated by medium-sized asterisk, odorless chamomile, shepherd’s bag, white gauze, field torus, annual bluegrass, field violet, field sow thistle, purpurea purpurea, species of pikulnik.

Herbicidal compositions and standards for them (including the commercial preparation Difezan ^® and the prototype) were applied in the form of aqueous solutions to the tillering phase of the culture using the experimental sprayer OD-2 designed by VNIIF.

The consumption rate of herbicidal compositions based on the combination of dicamba + chloro-sulfuron + metsulfuron-methyl: GS-21, VGR and GS-25, VGR in the amount of active substances per acid equivalent (ke) was 60.0 and 72, 0 g / ha, and the commercial drug Difezan ^® , BP and prototype 72.0 g / ha.

The rate of flow of the working fluid with water as a carrier is 200 l / ha.

The consumption rate of herbicidal compositions based on the combination of dicamba + tribenuron-methyl + metsulfuron-methyl: GS-29, VGR and GS-30, VGR according to the amount of active substances per ke amounted to 60.0 and 72.0 g / ha, and the commercial drug Difezan ^® , BP and prototype 72.0 g / ha.

The rate of flow of the working fluid with water as a carrier is 200 l / ha.

The cultivated area of one plot is 20 m, accounting 12.5 m, 4-fold repetition.

Weeds were counted three times: before spraying, 30 days after the herbicidal treatment and before harvesting. The accounting areas of 0.1 m ² in the amount of three were located on the diagonal of each plot in 4 replicates of all options.

Harvest accounting was carried out using a small-sized combine “Hehe-125” with the accounting area of the plot.

Weather conditions for conducting the experiment were favorable for the growth and development of the culture and the action of herbicides on weeds.

Statistical processing was performed by analysis of variance at a 5% confidence level.

The test results are presented in tables 6 and 7.

As can be seen from the presented results, the processing of barley crops with herbicidal compositions in accordance with the invention not only reduces weediness, but also leads to a significant increase in the yield of this crop compared to the standard and prototype.

Example 5. Evaluation of the stability of herbicidal compositions by the method of accelerated storage.

Samples of preparations with a volume of 100 ml were placed in plastic bottles and sealed. Polyethylene bottles with samples were placed in a thermostat for 30 days. During the storage of samples, the temperature in the thermostat was kept constant at 30 ± 0.1 ° С.

The percentage decomposition of active substances in herbicidal compositions was calculated by the formula:

where X is the relative percent decomposition,%;

Y ₁ - mass fraction of the substance in the sample before storage,%;

Y ₂ - mass fraction of the substance in the sample after storage,%.

The stability assessment results are shown in tables 8 and 9.

Table 3
Herbicidal activity of compositions based on derivatives of dicamba, tribenuron-methyl, metsulfuron-methyl in the treatment of vegetative plants of fruit-bush (vegetative experience in VCI) Cipher herbicide composition The ratio of active substances to ke Dose, g / ha (acid equivalent - ke) Decrease in
the lethal mass of the cocklebur,% of control Synergetic effect (+),% Active substances dicamba tribenuron methyl Z D.V. dicamba + tribenuron methyl metsulfuron methyl GS-27, VGR 15: 1 one 21 1.4 22.4 1.4 52 +11.1 GS-28, AGR 15: 2 one 21 2,8 23.8 1.4 58 +12.1 GS-29, VGR 15: 3 one eighteen 3.6 21.6 1,2 59 +11.7 GS-30, VGR 20: 1 one 28 1.4 29.4 1.4 55 +10.8 GS-31, VGR 20: 2 one 28 2,8 30.8 1.4 65 +11.6 GS-32, BP 20: 3 one 24 3.6 27.6 1,2 68 +10.4 Standards: dicamba + tribenuron methyl 15: 1 21 1.4 22.4 - 28 - 15: 2 21 2,8 23.8 - 34 - 15: 3 eighteen 3.6 21.6 - 38 - 20: 1 28 1.4 29.4 - 32 - 20: 2 28 2,8 30.8 - 44 - 20: 3 24 3.6 27.6 - 52 - metsulfuron methyl - - - - 1,2 fifteen - - - - 1.4 eighteen -

Table 4
The effect of herbicidal compositions based on dicamba, chlorosulfuron and metsulfuron methyl on the species sensitivity of weeds
in spring wheat crops 30 days after treatment in the tillering phase of the culture Weed species Decrease in weediness by options,% of control The number of weeds in the control, pcs / m ² Synergetic effect of the com position (+),% Songs Standards GS-21, VGR GS-25, VGR GS-21, AGR without MSM * GS-25, AGR without MSM * Laren, SP (600 g / kg MSM *) (Doses for acid equivalents) GS-21, VGR GS-25, VGR (59.4) (52.8) (57.6) (50.4) (1.8) (2,4) Cirsium field 82 90 62 68 22 28 fourteen +11.6 +13.0 Asterisk medium one hundred one hundred 84 76 24 32 32 + 10.7 +16.3 Mary White 92 95 78 70 28 38 24 +7.9 +13.6 Sow Thistle 74 85 65 60 twenty 28 21 +12.0 +13.8 Pikulnik Zyabra one hundred one hundred 82 75 25 34 eighteen +13.5 +16.5 Fragrant chamomile 84 92 62 68 23 thirty 46 +13.3 +14.4 Toritsa field 82 85 64 60 26 35 eighteen +8.6 +11 * MSM - Metsulfuron-methyl

Table 5
The action of herbicidal compositions based on dicamba, tribenuron-methyl and metsulfuron-methyl
species sensitivity of weeds in spring wheat crops 30 days after treatment in the tillering phase of the crop Weed species Decrease in weediness by options,% of control The number of weeds in the control, pcs / m ² The synergistic effect of the composition (+),% Songs Standards GS-29, VGR GS-30, VGR GS-29, AGR without MSM * GS-30, AGR without MSM * Laren, SP (600 g / kg MSM *) (Doses for acid equivalents, g / ha) GS-29, VGR GS-30, VGR (57) (52.8) (54) (50.4) (2,4) (3.0) Cirsium field 82 78 60 58 28 35 12 +8 +8.2 Asterisk medium 94 90 72 68 32 40 38 +10.8 +11.8 Mary White 96 91 76 70 38 48 25 +8.5 +9.6 Sow Thistle 85 79 64 60 28 34 eighteen +8.8 +7.8 Pikulnik Zyabra one hundred one hundred 82 78 34 42 24 +10.4 +14.5 Fragrant chamomile 92 80 70 70 thirty 38 36 +10.4 +13 Toritsa field 89 85 68 65 35 44 12 +8.6 +7.8 * MSM - Metsulfuron-methyl

Table 6
The action of herbicidal compositions based on dicamba, chlorosulfuron and metsulfuron methyl
total weed and barley grain yield Option The dose of active substances, g / ha Decrease in weediness,% Grain harvest, kg / ha 30 days after treatment before harvesting Total protected crop GS-21, VGR 60 94 92 28.3 8.8 72 one hundred 97 28.9 9,4 GS-25, VGR 60 95 94 28.1 8.6 72 one hundred 98 29.3 9.8 Difesan ^® , BP (reference) 72 86 84 24.9 5,4 Prototype 72 80 78 24.4 4.9 Hand weeding - one hundred one hundred 26.8 7.3 Herbicide-free control - (230) * (857) ** 19.5 - NDS ₀₅ - - 2,5 - * Number of weeds, pcs / m ²
** Mass of weeds, g / m ²

Table 7
The action of herbicidal compositions based on dicamba, tribenuron-methyl and metsulfuron-methyl
total weed and barley grain yield Option The dose of active substances, g / ha Decrease in weediness,% Grain harvest, kg / ha 30 days after treatment before harvesting Total protected crop GS-29, VGR 60 94 93 24.4 7.9 72 98 97 26.0 9.5 GS-30, VGR 60 95 96 25.0 8.5 72 one hundred 97 26.7 10,2 Difesan®, BP (reference) 72 86 87 19.5 3.0 Prototype 72 82 80 19.3 2,8 Hand weeding - one hundred one hundred 21.6 5.1 Herbicide-free control - (190) * (810) ** 16.5 - NDS ₀₅ - - - 2.0 - * Number of weeds, pcs / m ²
** Mass of weeds, g / m ²

Table 8
The stability of three-component water-glycol and aqueous compositions based on derivatives of dicamba, chlorosulfuron (HST), meth-
sulfuron methyl (MSM) during accelerated storage. Storage conditions: Temperature 30 ° С, storage time 30 days Cipher Com
position Name of surfactant Mass fraction of surfactant, wt.% Mass fraction of active substances by ke, wt.% The degree of decomposition AI,% before storage after storage dicamba Hst MSM dicamba Hst MSM dicamba Hst MSM GS-25, VGR without surfactant - 32 1,6 1,6 31.9 1.4 1.35 is stable 12.5 15.6 OADMA 25 32 1,6 1,6 32,0 1,61 1,59 also does not decompose does not decompose GS-22, VGR syntanol BV 8 27 1.8 1.8 27.1 1.55 1,62 - "- 13.8 10.0 syntanol BV + OADMA 8 + 4 27 1.8 1.8 27.1 1.81 1.80 - "- does not decompose does not decompose GS-24, VGR neon 9-12 6 38 1.9 0.95 38,0 1.70 0.82 - "- 13.7 13.6 neonol 9-12 + OADMA 6 + 5 38 1.9 0.95 38.1 1.91 0.96 - "- does not decompose does not decompose GS-26, BP ALM-10 5 28 1.4 2,8 27.9 1.25 2,50 - "- 10.7 10.7 ALM-10 + OADMA 5 + 10 28 1.4 2,8 28.0 1.41 2.80 - "- does not decompose does not decompose The determination method is high pressure liquid chromatography.
The accuracy of determination: dicamba P ₉₅ = + 0.6%, chlorosulfuron and metsulfuron methyl - P ₉₅ = ± 0.09%.

Table 9
The stability of three-component water-glycol and aqueous compositions based on derivatives of dicamba, tribenuron-methyl (TBM) and
Metsulfuron methyl (MSM) for accelerated storage. Storage conditions: Temperature 30 ° С, storage time 30 days Cipher Com
position Name of surfactant Mass fraction of surfactant, wt.% Mass fraction of active substances by ke, wt.% The degree of decomposition AI,% before storage after storage dicamba TBM MSM dicamba TBM MSM dicamba TBM MSM GS-30, VGR without surfactant - thirty 1,5 1,5 29.95 1.35 1.32 is stable 10.0 12.0 OADMA fifteen thirty 1,5 1,5 30.05 1.51 1,5 also does not decompose does not decompose GS-28, AGR syntanol BV 5 31.5 4.2 2.1 31.40 3.9 1.9 - "- 7.1 9.5 syntanol BV + OADMA 5 + 10 31.5 4.2 2.1 31.46 4.19 2.09 - "- does not decompose does not decompose GS-27, VGR neon 9-12 10 27.0 1.8 1.8 26.9 1,64 1.68 - "- 8.9 6.7 neonol 9-12 + OADMA 10 + 6 27.0 1.8 1.8 27.1 1.81 1.8 - "- does not decompose does not decompose GS-32, BP ALM-10 10 34.0 5.1 1.7 33.9 4.7 1,5 - "- 7.8 11.7 ALM-10 + OADMA 10 + 5 34.0 5.1 1.7 34.1 5.12 1.71 - "- does not decompose does not decompose The determination method is gas chromatography.
The accuracy of determination: dicamba P ₉₅ = ± 0.7%, tribenuron-methyl and metsulfuron methyl - P ₉₅ = ± 0.1%.

Claims (4)

1. A herbicidal composition containing, as an active substance, a synergistically effective mixture of the ammonium salt of 2-methoxy-3,6-dichlorobenzoic acid (I) and the ammonium salts of two herbicides from a number of substituted sulfonylureas (II and III), as well as surfactants , glycol and water, characterized in that chlorosulfuron (IIa) or tribenuron-methyl (IIb) in combination with metsulfuronmethyl (III) are used as substituted sulfonylureas, and the ratio I: (IIa or IIb): III is respectively (19.0 -19.3): (1-3): (0.68-2.1) in acid equivalents, As surfactants use alkyl dimethylamine oxide (OADMA) or mixtures thereof with sintanolov BV Neonol or 9-12, or polyoxyethylene ethers of fatty alcohols, C ₁₂ -C ₁₄ (ALM-10), and the amount included in the components are in the following proportions , wt.%: Ammonium salt of 2-methoxy-3,6- dichlorobenzoic acid according acid equivalent (ke) 27.0-38.0 Ammonium salt of chlorosulfuron or tribenuron methyl by ke 1.4-6.0 Metsulfuronmethyl Ammonium Salt by ke 0.95-4.2 Surface-active substance 11-25 Glycol No more than 8,0 Water The rest is up to 100 2. The herbicidal composition according to claim 1, wherein the ammonium salts of 2-methoxy-3,6-dichlorobenzoic acid (I), chlorosulfuron, tribenuron-methyl and metsulfuron-methyl are dimethylethanolammonium or diethylethanolammonium, or triethanolammonium, or mono. 3. The herbicidal composition according to claim 1, in which the glycol is ethylene glycol, or propylene glycol, or triethylene glycol. 4. A method of controlling weed vegetation in crops of crops by applying herbicides based on a mixture of dicamba with substituted sulfonylureas, characterized in that an effective amount of the herbicidal composition according to any one of claims 1 to 3 is applied to the weeds to be destroyed.