RU2431252C1 - Liquid herbicide in form of emulsified concentrate (versions) - Google Patents

Abstract

FIELD: agriculture. ^ SUBSTANCE: invention relates to agriculture. A liquid herbicide contains phenoxaprop-P-ethyl, etoxylates of aliphatic alcohols C6-C10 with 6-8 ethylene oxide links, surfactants as penetration intensifier, organic dissolvent at the following ratio of components in wt %: phenoxaprop-P-ethyl 5.5-15.0; surfactants 5.0-10.0; penetration intensifier 40.0-60.0; organic dissolvent - balance. The agent may contain ethofumesate in amount of 10-12 wt %. The agent may contain phenmedifam in amount of 8-10 wt %. ^ EFFECT: invention makes it possible to improve herbicide effect of the product. ^ 13 cl, 4 tbl, 19 ex

Description

The invention relates to agriculture, namely to liquid herbicidal preparations containing phenoxaprop-P-ethyl (the R-isomer of phenoxaprop-ethyl) as the active ingredient, the chemical name is ethyl 2- [4- (6-chlorobenzoxazolyl-2-) oxy) phenoxy] propionic acid (NN Melnikov et al. Handbook. "Pesticides and plant growth regulators." M.: "Chemistry", 1995, p. 163), or a mixture of active substances phenoxaprop-P-ethyl and etofumezate, chemical name is (±) -2,3-dihydro-3,3-dimethyl-2-ethoxybenzofuranyl-5-methanesulfonate (same source , p. 203), as well as a mixture of the active ingredients of fenoxaprop-P-ethyl, etofumezate and phenmedifam, the chemical name is -O- [3- (methoxycarbonylamino) phenyl] -N- (tolyl-3) carbamate (same source, p. 162).

A liquid herbicidal agent is known in the form of an emulsifiable concentrate or concentrated emulsion (DE No. 3917959, IPC A01N 39/02, 1990). The concentrate as an active substance contains: phenoxaprop-P-ethyl or its mixture with an antidote, an aromatic organic solvent, as a nonionic surfactant, polyglycol ether of fatty alcohol with 10-18 carbon atoms or octyl (or nonyl) phenylpolyglycol ether, as an anionic Surfactant, a calcium salt of alkylbenzenesulfonic acid with 8-14 carbon atoms in the alkyl part in the case of an emulsifiable concentrate, or a block copolymer of ethylene oxide, propylene oxide and ethylene oxide phosphorylated at the α- or ω-position whether. A known agent may also contain water, antifreeze and ethoxylated soybean oil.

The disadvantage of this herbicide is insufficient storage stability (no more than 10 days at temperatures from -10 ° C to + 50 ° C).

A liquid herbicidal agent is known in the form of an emulsifiable concentrate or concentrated emulsion (RU No. 211,13788, IPC A01N 25/02, A01N 25/04, A01N 25/30, A01N 39/04, 1998). The emulsifiable concentrate, in addition to the active substance based on diclofop-methyl or phenoxaprop-ethyl or its optical isomer, contains, as a nonionic surfactant, ethoxylated C13 fatty alcohol (6-8 EO) or its mixture with ethoxylated oleyl alcohol and ethoxylated nonylphenol, ethoxylated C8 alkyl phenol and ethoxylated castor oil.

The disadvantage of this tool is its low storage stability.

The herbicidal agent in the form of a microemulsion possesses higher storage stability (RU No. 2105475, IPC A01N 25/02, A01N 39/02, 1998). In addition to the active substance - derivatives of phenoxyphenoxy and heteroaryloxyphenoxycarboxylic acids or a mixture thereof with an antidote based on triazole or carboxylic acid, an organic solvent and water, the product contains calcium dodecylbenzenesulfonate as an anionic surfactant (dispersant) in the form of a butanol solution, and a mixture of ethylene or nonionic surfactant as a surfactant nonylphenol, ethoxylated polyglycol fatty acid ester and polyoxypropylene-polyoxyethylene fatty alcohol ether. To increase frost resistance, the microemulsion contains up to 10% antifreeze, which is used as glycerin.

Despite the fact that antifreeze is introduced into the composition of the above microemulsion, it has low frost resistance and can retain its properties for a long time only at a temperature not lower than minus 5 ° C, which is not enough when using the drug in Russia. In addition, for the preparation of a microemulsion, it is necessary to use two reactors; long intensive mixing is required.

Known suspension concentrate for processing plants (RU No. 2335897, IPC A01N 25/04, A01N 25/30, 2008). This concentrate contains a solid at room temperature agrochemical active ingredient, penetration enhancer, vegetable oil, nonionic surfactant and / or anionic surfactant, which are a dispersant, and one or more additives from the group of emulsifiers, antifoams, preservatives, antioxidants, dyes and / or inert fillers. As a penetration enhancer, the concentrate contains an alkanol-alkoxylate of the formula RO - (- AO) _m H, in which R is straight or branched alkyl having from 4 to 20 carbon atoms, AO means an ethylene oxide, propylene oxide, butylene oxide group or a mixture of ethylene oxide and propylene oxide or butylene oxide groups, am means numbers from 2 to 30.

The use of herbicides in the form of suspensions significantly slows down the transport of solid particles of the active substance of the herbicidal composition from the liquid phase to the plant, which leads to a decrease in the herbicidal activity of the composition.

The disadvantage of herbicidal compositions in the form of a suspension is also their high consumption rate and, as a consequence, the high hectare cost of processing.

The closest in technical essence and the achieved result to the proposed variants of the herbicidal agent is a herbicide based on phenoxyprop-P-ethyl with the addition of ethoxylated fatty alcohols with 8-12 ethylene oxide groups (RU No. 2307503, IPC A01N 39/02, A01N 25/02, 2007). This composition is an oil-water emulsion, which, in addition to the active active ingredient and antidote, contains, as an anionic surfactant, calcium phenyl sulfonate or alkyl benzene sulfonate in the form of a butanol solution and technical lignosulfonate, as non-ionic surfactants, ethoxylated alkyl phenols, ethoxylated ethylamines containing 11 or ethoxylated fatty alcohols with 8-12 ethylene oxide groups, as an organic solvent, cyclohexanone or xylene or mixtures thereof, and industrial or transformer oil and water. Additionally, it may contain alkylamine propoxylate ethoxylate.

This composition is frost-resistant and stable during storage. Its disadvantages include multicomponent, the need to use a high-speed mixer type mixer to obtain a homogeneous emulsion.

It is known that many agrochemical biologically active substances, especially biologically active substances of systemic effects, must penetrate into plants so that they can show their activity evenly throughout the plant. So, when assimilating biologically active substances through the leaves, the penetration barrier of the cuticle by biologically active substances must be overcome. In addition, it is important that agrochemical biologically active substances penetrate plants quickly and spread over the largest possible surface, because otherwise there is a danger that the active components will be washed away by rain or dew.

It is also known that some additives used in plant protection products, such as, for example, surfactants, mineral and vegetable oils, facilitate the penetration of agrochemical biologically active substances into plants, as a result of which the activity of biologically active substances can increase. In some cases, additives can enhance wettability, can cause a better distribution of the film on the plant surface (= spreading) obtained by spraying, can increase the ability to use the biologically active substance in the dried residue after spraying due to the so-called easy dissolution on the surface, or facilitate direct penetration biologically active substances through the cuticles. In this case, the additives are either directly introduced into the composition, which is possible only for a limited percentage composition, or are added by mixing in a container to the corresponding spray liquid.

The use of alcohol ethoxylates is known as a means of facilitating the penetration of numerous agrochemical biologically active substances (Gashkin RE (Gaskin RE), 1995, Excipients for agrochemical preparations. Reports of the 4th International Symposium, chapter 3, pp. 167-310 ( Adjuvants for agrochemicals. Proceedings of the 4 ^th Int. Symp., Ch.3, pp. 167-310), New Zealand Forest Research Institute Limited, Rotorua, New Zealand (ISSN 0111-8129) )

The patent RU No. 2325054 (MPK A01N 47/38, A01N 25/30, A01P 13/00, 2008) describes compounds of the formula (I)

where n is 4, 5, 6, 7 or 8 and Q is a branched tridecyl residue,

which are used as penetration enhancers and have surprisingly good suitability for herbicidal biologically active substances.

The problem to which the invention is directed, is to obtain new highly effective liquid herbicidal agents based on fenoxaprop-P-ethyl, as an active active substance.

The problem is solved in that a liquid herbicidal agent containing phenoxaprop-P-ethyl, as an active substance, surfactants and an organic solvent, according to the invention additionally contains ethoxylates of aliphatic alcohols C ₆ -C ₁₀ with 6-8 ethylene oxide units, as a penetration enhancer, in the following ratio of components in wt.%:

Fenoxaprop-P-ethyl 5.5-15.0 Surfactant 5.0-10.0 Penetration enhancer 40.0-60.0 Organic solvent rest

The problem is also solved by the fact that a liquid herbicidal agent containing phenoxaprop-P-ethyl, as an active active ingredient, surfactants and an organic solvent, according to the invention additionally contains etofumezate, as an active active ingredient, and C ₆ aliphatic alcohols ethoxylates -C ₁₀ with 6-8 ethylene oxide units, as a penetration enhancer, in the following ratio of components in wt.%:

Fenoxaprop-P-ethyl 5.5-15.0 It is a fumezat 10.0-12.0 Surfactant 5.0-10.0 Penetration enhancer 40.0-60.0 Organic solvent rest

The problem is also solved by the fact that a liquid herbicidal agent containing phenoxaprop-P-ethyl, as an active active ingredient, surfactants and an organic solvent, according to the invention additionally contains etofumezate and phenmedifam, as an active active ingredient, and aliphatic alcohol ethoxylates With ₆ -C ₁₀ with 6-8 ethylene oxide units, as a penetration enhancer, in the following ratio of components in wt.%:

Fenoxaprop-P-ethyl 5.5-15.0 It is a fumezat 10.0-12.0 Fenmedifam 8.0-10.0 Surfactant 5.0-10.0 Penetration enhancer 40.0-60.0 Organic solvent rest

The proposed herbicidal agents may also additionally contain an antidote in an amount of up to 2.75 wt.% And an antifoam in an amount of 0.02-0.03 wt.%, Compatible with the components of the composition, as well as citric acid in an amount of up to 0.7 wt. % Surfactants in the proposed herbicidal agents are used both as an individual substance and as a solution in an organic solvent or in water.

As surfactants, the proposed herbicidal agents may contain anionic, cationogenic or nonionic surfactants, for example, commercial products such as calcium alkylbenzenesulfonate in the form of a 50% solution in butyl alcohol, Catamine AB (alkylbenzyldimethylammonium chloride in the form of 50% aqueous solution), Tween-80 (sorbitan bis (polyoxyethylene) monooleate), Oxamine L-18 (N-alkyl-N, N-di (polyethylene glycol) amines based on coconut oil acids) (Surfactants. Handbook. / Ed. A.A. Abramzon. L .: "Chemistry", 1979, pp. 301, 309, respectively; Surfactants and compositions. Handbook. / Under the editorship of M.Yu. Pletnev, F. Klawel. M: 2002), SORPOL 3044 (a mixture of polyoxyethylene acrylate and polyoxyethyl ester of fatty acids in the form of a 78-80% solution in butyl or isobutyl alcohol) manufactured by TONO CHEMICAL INDUSTRY CO., LTD (Japan).

As an organic solvent, xylene, N-methyl-pyrrolidone, cyclohexanone, etc. can be used.

As an antidote, clochintocet-mexyl is predominantly used, the chemical name is 8-methylhexyloxycarbonylmethoxy-5-chloroquinoline (Belan S.R., Grapov A.F., Melnikova G.M. Handbook. "New Pesticides". M .: VNIIKHSZR, ed. Grail House, 2001, p. 51) or mefenpyr diethyl, chemical name - diethyl (RS) -1- (2,4-dichlorophenyl) -5-methyl-2-pyrazoline-3,5-dicarboxylate (Methodological instructions MUK 4.1.1397-03, determination of residual amounts of mefenpyridiethyl antidote in water, soil, grain and straw of cereal crops, green mass and corn grain gasochrome tograficheskim method).

The proposed herbicidal agents have good stability and frost resistance during storage and significantly better biological effectiveness than similar known formulations.

The advantages of the claimed herbicidal agents can also be attributed to the fact that their production is less expensive than the production of the corresponding preparative forms, since it does not require the use of multi-turn mixer-type devices, when diluting the concentrate with water, neither significant sludge nor interfering floc formation occurs, which often takes place for appropriate known drugs.

The following are examples illustrating but not limiting the claimed invention.

An herbicidal agent in the form of an emulsifiable concentrate is prepared by dissolving fenoxaprop-P-ethyl and an antidote, or a mixture of fenoxaprop-P-ethyl and etofumezat, or a mixture of fenoxaprop-P-ethyl, etofumezate and fenmedifam in an organic solvent mixture and penetration enhancer at a temperature of from 30 to 40 ° C, followed by mixing of the components for 10-20 minutes.

As the penetration enhancer in the examples cited, Oksanol KD-6 (monoalkyl ethers of polyethylene glycol based on primary fatty alcohols (Surfactants. Reference. / Edited by A.A. Abramzon. L .: "Chemistry", 1979, p. .302) - analogues: Trend-90, Oxanol-agro), which is used to improve the penetration of agrochemical active substances into plants (List of pesticides and agrochemicals approved for use on the territory of the Russian Federation, 2007, pp. 243-244).

The product Penta-465 manufactured by NPK Penta (TU 2257-001-40245042-98), which is a solution of organosilicon oligomers in water, was used as an antifoam.

Example 1

In 54.58 g of KD-6 oxanol and 0.02 g of Penta-465 antifoam, 0.4 g of citric acid are dissolved at a temperature of 35-40 ° C, 27 g of xylene is added to the solution. 13 g of phenoxaprop-P-ethyl are dissolved in the resulting mixture at 30-40 ° C. Then add 5 g of oxamine L-18. The resulting mixture is stirred for 10-20 minutes until a homogeneous mass is formed.

Example 2

0.17 g of citric acid is dissolved in 48.41 g of KD-6 oxanol and 0.02 g of Penta-465 antifoam at a temperature of 35-40 ° C, 30 g of N-methylpyrrolidone are added to the solution. 15 g of phenoxaprop-P-ethyl are dissolved in the resulting mixture at 30-40 ° C. Then add 6.4 g of sorpol 3044. The resulting mixture is stirred for 10-20 minutes until a homogeneous mass is formed.

Example 3

In a mixture of 56.23 g of oxanol KD-6, 0.02 g of Penta-465 defoamer and 25 g of xylene are dissolved 11 g of phenoxaprop-P-ethyl and 2.75 g of clochintocet-mexyl at 30-40 ° C. Then add 5 g of sorpol 3044. The resulting mixture is stirred for 10-20 minutes until a homogeneous mass is formed.

Example 4

In a mixture of 55.73 g of oxanol KD-6, 0.02 g of Penta-465 defoamer and 25 g of xylene are dissolved 11 g of phenoxaprop-P-ethyl and 2.75 g of clochintocet-mexyl at 30-40 ° C. Then 5.5 g of calcium alkylbenzenesulfonate are added. The resulting mixture is stirred for 10-20 minutes until a homogeneous mass is formed.

Example 5

In 53.33 g of KD-6 oxanol and 0.02 g of Penta-465 antifoam, 0.4 g of citric acid are dissolved at a temperature of 35-40 ° C, 25 g of xylene are added to the solution. In the resulting mixture, 11 g of phenoxaprop-P-ethyl and 2.75 g of clochintocet-mexyl are dissolved at 30-40 ° C. Then add 7.5 g of oxamine L-18. The resulting mixture is stirred for 10-20 minutes until a homogeneous mass is formed.

Example 6

0.23 g of citric acid are dissolved in 56.00 g of KD-6 oxanol KD-6 and 0.02 g of Penta-465 defoamer at a temperature of 35-40 ° C, 25 g of xylene are added to the solution. In the resulting mixture, 11 g of phenoxaprop-P-ethyl and 2.75 g of mefenpyr diethyl are dissolved at 30-40 ° C. Then add 5 g of catamine AB. The resulting mixture is stirred for 10-20 minutes until a homogeneous mass is formed.

Example 7

In 53.03 g of KD-6 oxanol and 0.02 g of Penta-465 defoamer, 0.5 g of citric acid is dissolved at a temperature of 35-40 ° C, 27 g of xylene is added to the solution. In the resulting mixture, 11 g of phenoxaprop-P-ethyl and 2.75 g of mefenpyr diethyl are dissolved at 30-40 ° C. Then add 5.7 g of oxamine L-18. The resulting mixture is stirred for 10-20 minutes until a homogeneous mass is formed.

Example 8

In a mixture of 46.98 g of KD-6 oxanol, 0.02 g of Penta-465 defoamer and 28 g of N-methyl pyrrolidone, 6 g of phenoxaprop-P-ethyl and 12 g of etofumizate are dissolved at 30-40 ° C. Then add 7 g of tween-80. The resulting mixture is stirred for 10-20 minutes until a homogeneous mass is formed.

Example 9

In 48.38 g of KD-6 oxanol and 0.02 g of Penta-465 defoamer, 0.6 g of citric acid was dissolved at a temperature of 35-40 ° C, 27 g of xylene was added to the solution. 5.5 g of fenoxaprop-P-ethyl and 11 g of etofumezate are dissolved in the resulting mixture at 30-40 ° C. Then add 7.5 g of oxamine L-18. The resulting mixture is stirred for 10-20 minutes until a homogeneous mass is formed.

Example 10

In a mixture of 50.98 g of KD-6 oxanol, 0.02 g of Penta-465 defoamer and 27 g of xylene, 5.5 g of fenoxaprop-P-ethyl and 11 g of etofumizate are dissolved at 30-40 ° C. Then 5.5 g of calcium alkylbenzenesulfonate are added. The resulting mixture is stirred for 10-20 minutes until a homogeneous mass is formed.

Example 11

In a mixture of 44.48 g of oxanol KD-6, 0.02 g of Penta-465 defoamer and 25 g of N-methyl-pyrrolidone, 5.5 g of phenoxaprop-P-ethyl, 11 g of etofumizate and 9 g of phenmedifam are dissolved at 30- 40 ° C. Then add 5 g of tween-80. The resulting mixture is stirred for 10-20 minutes until a homogeneous mass is formed.

Example 12

In a mixture of 43.98 g of oxanol KD-6, 0.02 g of Penta-465 defoamer and 25 g of N-methyl-pyrrolidone, 5.5 g of phenoxaprop-P-ethyl, 11 g of etofumizate and 9 g of phenmedifam are dissolved at 30- 40 ° C. Then add 5.5 g of sorpol 3044. The resulting mixture is stirred for 10-20 minutes until a homogeneous mass is formed.

Example 13 (prototype)

In 11 g of cyclohexanone, 7.7 g of phenoxaprop-P-ethyl, 7 g of clochintocet-mexyl are dissolved at a temperature of 30-35 ° C, 3 g of technical powder lignosulfonates, 3 g of ethoxylated fatty alcohols with 7-12 ethylene oxide groups, 5 g of alkylbenzenesulfonate are added calcium (50% solution in butanol), 15 g of alkylamine propoxylate ethoxylate, 30 g of industrial oil I-8 A and 18.3 g of water. The resulting mixture is stirred for 15-20 minutes in a high-speed mixer type mixer until a uniform mass of thick sour cream is formed.

Formulations of the proposed herbicidal agents in the form of an emulsifiable concentrate are presented in table 1.

Example 14. Evaluation of the stability of the emulsion

Determination of the stability of the emulsion was carried out according to the method of GOST 16291-79. A homogeneous emulsion was prepared from a sample of the sample, which was kept in a sump for 6 hours. After this time, the amount of sludge was determined. The quality indicators of the tested samples are presented in table 2.

From table 2 it is seen that the stability of a 5% aqueous emulsion of the claimed herbicidal agent for 6 hours practically does not differ from the prototype.

Example 15. Evaluation of frost resistance

Assessment of frost resistance was carried out according to the method of GOST R51247-99 p. 7.4. Samples of preparations weighing 50 g were kept in the freezer for 5 days at a temperature of minus 25 ° C. After this time, the samples were left at room temperature until thawed and their condition was evaluated. The test results are also presented in table 2.

Example 16. Test for accelerated storage

The preparation was kept in a thermostat at a temperature of plus 54 ° C for 2 weeks (CIPACMT method 46). The quality indicators shown in table 2, almost unchanged (within the limits of experimental error).

Example 17. Test for thermal aging

The preparations were kept in a thermostat at a temperature of plus 45 ° C for 60 days (GOST 9.707-81). The quality indicators of the drugs remained practically unchanged (within the limits of the experimental error).

The conformity of the tested samples to the tests of examples 14-17 allows us to conclude that the claimed liquid herbicidal agent in the form of an emulsifiable concentrate can be guaranteed to be stored for 2 years in unheated warehouses at temperatures from minus 25 to plus 40 ° С.

Example 18. Herbicidal action at the post-emergence stage of development of sugar beet (post-emergence action)

Field tests of formulations 1, 2, 8-12 were carried out on sugar beet crops. For comparison, the herbicidal drug Furore-super 7.5 EMV was used. The experimental plots are littered with oats, chicken millet, and species of bristles. The area of one experimental plot is 20 m ² , the density of clogging is 100-120 pieces of weed plants per 1 m ² . Treatment with drugs was carried out on vegetative weeds in the phase of 3-5 leaves. The hectare rate of the herbicide was mixed with 200 l of water and the plots were treated with a sprayer. Accounting for efficiency was carried out 30 days after treatment. The test results are presented in table 3.

From the presented results it is seen that to obtain herbicidal activity at the Furore-super level, it is necessary 15-20% less than the above funds (examples 1-2). There is an increase in the herbicidal activity of phenoxyprop-P-ethyl in the presence of etofumezate by 20-30% (examples 8-10). The spectrum of action of herbicidal agents in the presence of fenmedifam is increased (examples 11-12). Compared with kemifam, the effectiveness of annual dicotyledons increases by 15-38% (examples 11-12).

Example 19. Herbicidal action at the post-emergence stage of wheat development (post-emergence action)

Field trials of formulations 3-7 were carried out on spring wheat crops. The experimental plots are littered with oats, chicken millet, and species of bristles. The area of one experimental plot is 20 m ² , the density of clogging is 80-110 pieces of weed plants per 1 m ² . Treatment with drugs was carried out on vegetative weeds in the phase of 3-5 leaves. The hectare rate of the herbicide was mixed with 200 l of water and the plots were treated with a sprayer. Accounting for efficiency was carried out 30 days after treatment. The test results are presented in table 4.

Table 4 Spring wheat test results Example Number dose Spring wheat. 1 Damage to the culture,% Weed control in% of control l / ha d.v. on ha wild oats chicken millet species of bristle 3 0.45 fifty 0 78 one hundred 96 four 0.45 fifty 0 78 one hundred 99 5 0.45 fifty 0 71 one hundred 99 6 0.45 fifty 0 74 one hundred one hundred 7 0.45 fifty 0 72 one hundred 97 13 prototype 0.80 62 1,0 73 one hundred 99

From the presented results it is seen that to obtain herbicidal activity at the prototype level, approximately 20% less than the declared herbicidal agent is required (examples 3-7).

The increase in the herbicidal action of the proposed compositions is achieved due to the higher penetration rate of the active substance in the weed plant.

Claims (13)

1. A liquid herbicidal agent containing fenoxaprop-P-ethyl, as an active substance, surfactants and an organic solvent, characterized in that it further contains ethoxylates of aliphatic alcohols C ₆ -C ₁₀ with 6-8 ethylene oxide units as a penetration enhancer in the following ratio of components, wt.%:
Fenoxaprop-P-ethyl 5.5-15.0 Surfactant 5.0-10.0 Penetration enhancer 40.0-60.0 Organic solvent Rest 2. The herbicidal agent according to claim 1, characterized in that it contains an antidote in an amount of up to 2.75 wt.%. 3. The herbicidal agent according to claim 1, characterized in that it contains a defoamer that is compatible with the components of the composition, in an amount of 0.02-0.03 wt.%. 4. The herbicidal agent according to claim 1, characterized in that it contains citric acid in an amount of up to 0.7 wt.%. 5. The herbicidal agent according to claim 1, characterized in that the surfactant is used as an individual substance or as a solution in an organic solvent or in water. 6. A liquid herbicidal agent containing fenoxaprop-P-ethyl as an active active ingredient, surfactants and an organic solvent, characterized in that it further comprises etofumezate as an active active ingredient and ethoxylates of aliphatic alcohols С ₆ -С ₁₀ с 6 -8 ethylene oxide units as a penetration enhancer in the following ratio of components, wt.%:
Fenoxaprop-P-ethyl 5.5-15.0 Surfactant 5.0-10.0 It is a fumezat 10.0-12.0 Penetration enhancer 40.0-60.0 Organic solvent Rest 7. The herbicidal agent according to claim 6, characterized in that it contains a defoamer that is compatible with the components of the composition, in an amount of 0.02-0.03 wt.%. 8. The herbicidal agent according to claim 6, characterized in that it contains citric acid in an amount of up to 0.7 wt.%. 9. The herbicidal agent according to claim 6, characterized in that the surfactant is used as an individual substance or as a solution in an organic solvent or in water. 10. A liquid herbicidal agent containing fenoxaprop-P-ethyl as an active active ingredient, surfactants and an organic solvent, characterized in that it further comprises ethofumezate and phenmedifam as an active active ingredient and C ₆ -C ₁₀ aliphatic alcohols ethoxylates with 6-8 ethylene oxide units as a penetration enhancer in the following ratio of components, wt.%:
Fenoxaprop-P-ethyl 5.5-15.0 It is a fumezat 10.0-12.0 Fenmedifam 8.0-10.0 Surfactant 5.0-10.0 Penetration enhancer 40.0-60.0 Organic solvent Rest 11. The herbicidal agent according to claim 10, characterized in that it contains a defoamer that is compatible with the components of the composition in an amount of 0.02-0.03 wt.%. 12. The herbicidal agent of claim 10, characterized in that it contains citric acid in an amount of up to 0.7 wt.%. 13. The herbicidal agent of claim 10, wherein the surfactant is used as an individual substance or as a solution in an organic solvent or in water.