阅读说明：本技术 除草剂组合物 (Herbicidal composition ) 是由 宇井隆人 于 2019-10-30 设计创作，主要内容包括：本发明为一种除草剂组合物,其含有下述成分(A)、成分(B)和成分(C),成分(B)的含量与成分(C)的含量的质量比即(C)/(B)为0.010以上且0.50以下。成分(A)：选自草铵膦及其盐中的化合物；成分(B)：下述通式(B-I)所示的化合物,R～(1b)O(R～(2b)O)-nSO-3～-M～+(B-I)〔式中,R～(1b)为碳原子数8以上且24以下的烃基,R～(2b)为碳原子数2以上且4以下的烷二基,n为平均加成摩尔数且为0以上且30以下,M～+为抗衡离子。〕；成分(C)：选自下述通式(C-I)所示的化合物和下述通式(C-II)所示的化合物中的1种以上的化合物,R～(1c)-OH(C-I)〔式中,R～(1c)表示碳原子数8以上且18以下的烃基。〕R～(2c)-N(R～(3c))-2(C-II)〔式中,R～(2c)表示碳原子数6以上且18以下的烃基。R～(3c)独立地表示氢原子、甲基或羟乙基〕。(The present invention is a herbicide composition containing the following component (A), component (B) and component (C), wherein the mass ratio of the content of the component (B) to the content of the component (C), (C)/(B), is 0.010 to 0.50. Component (A): a compound selected from glufosinate and salts thereof; component (B): a compound represented by the following general formula (B-I), R 1b O(R 2b O) n SO 3 ‑ M + (B-I) [ in the formula, R 1b Is a hydrocarbon group of 8 to 24 carbon atoms, R 2b Is an alkanediyl group having 2 to 4 carbon atoms, wherein n is an average molar number of addition and is 0 to 30 inclusive，M + Are counter ions. Angle (c); component (C): at least 1 compound selected from the group consisting of compounds represented by the following general formula (C-I) and compounds represented by the following general formula (C-II), R 1c -OH (C-I) [ wherein R 1c Represents a hydrocarbon group having 8 to 18 carbon atoms. R 2c ‑N(R 3c ) 2 (C-II) [ in the formula, R 2c Represents a hydrocarbon group having 6 to 18 carbon atoms. R 3c Independently represents a hydrogen atom, a methyl group or a hydroxyethyl group ].)

1. A herbicide composition comprising a component A, a component B and a component C, wherein the C/B ratio of the mass ratio of the content of the component B to the content of the component C is 0.010 to 0.50,

component A: a compound selected from glufosinate and salts thereof,

component B: a compound represented by the following general formula (B-I),

R^1bO(R^2bO)_nSO₃ ^-M⁺ (B-I)

in the formula, R^1bIs a hydrocarbon group of 8 to 24 carbon atoms, R^2bIs an alkanediyl group having 2 to 4 carbon atoms, n is an average molar number of addition and is 0 to 30, M⁺Is used as a counter ion and has a high degree of corrosion resistance,

component C: 1 or more compounds selected from the group consisting of compounds represented by the following general formula (C-I) and compounds represented by the following general formula (C-II),

R^1c-OH (C-I)

in the formula, R^1cRepresents a hydrocarbon group having 8 to 18 carbon atoms,

R^2c-N(R^3c)₂ (C-II)

in the formula, R^2cRepresents a hydrocarbon group having 6 to 18 carbon atoms, R^3cIndependently represents a hydrogen atom, a methyl group or a hydroxyethyl group.

2. The herbicidal composition according to claim 1, further comprising the following component D,

component D: an aromatic sulfonate having an aliphatic hydrocarbon group.

3. The herbicidal composition according to claim 2, wherein component D is 1 or more compounds selected from the group consisting of alkylbenzenesulfonates, alkylnaphthalenesulfonates, and alkyldiphenylether disulfonates.

4. A herbicidal composition according to claim 2 or 3, wherein the mass ratio D/B of the content of component B to the content of component D is from 0.01 to 0.4.

5. A herbicidal composition according to any one of claims 1 to 4, wherein R^1cCarbon atom ofThe number of the subgroups is 10 to 14.

6. A herbicide composition as claimed in any one of claims 1 to 5, which contains component A in an amount of 5 to 40 mass%.

7. A herbicide composition as claimed in any one of claims 1 to 6, wherein [ B + C ]/A, which is the mass ratio of the content of component A to the total content of component B and component C, is 0.1 to 3.

8. A herbicide composition as claimed in any one of claims 1 to 7, wherein the mass ratio C/A of the content of component A to the content of component C is 0.01 or more and 0.4 or less.

9. A herbicide composition as claimed in any one of claims 1 to 8, which contains a component selected from the group consisting of alkylbetaines, alkyldimethylamine oxides, and alkylglycosides/alkylpolyglycosides, wherein the alkyl group in the alkyldimethylamine oxide has 8 or more and 18 or less carbon atoms.

10. A weeding method, wherein a herbicide dispersion liquid prepared from the herbicide composition of any one of claims 1 to 9 is dispersed on a plant.

11. An efficacy-enhancing agent composition for glufosinate, comprising a component B and a component C, wherein the C/B ratio by mass of the content of the component B to the content of the component C is 0.010 to 0.50,

component B: a compound represented by the following general formula (B-I),

R^1bO(R^2bO)_nSO₃ ^-M⁺ (B-I)

in the formula, R^1bIs a hydrocarbon group of 8 to 24 carbon atoms, R^2bIs an alkanediyl group having 2 to 4 carbon atoms, n is an average molar number of addition and is 0 to 30, M⁺Is used as a counter ion and has a high degree of corrosion resistance,

component C: 1 or more compounds selected from the group consisting of compounds represented by the following general formula (C-I) and compounds represented by the following general formula (C-II),

R^1c-OH (C-I)

in the formula, R^1cRepresents a hydrocarbon group having 8 to 18 carbon atoms,

R^2c-N(R^3c)₂ (C-II)

in the formula, R^2cRepresents a hydrocarbon group having 6 to 18 carbon atoms, R^3cIndependently represents a hydrogen atom, a methyl group or a hydroxyethyl group.

12. The efficacy-enhancing agent composition for glufosinate of claim 11, wherein R^1cHas 10 to 14 carbon atoms.

13. The efficacy-enhancing agent composition for glufosinate-ammonium according to claim 11 or 12, further comprising the following component D,

component D: an aromatic sulfonate having an aliphatic hydrocarbon group.

14. The efficacy enhancer composition for glufosinate according to claim 13, wherein component D is 1 or more compounds selected from the group consisting of alkyl benzene sulfonate, alkyl naphthalene sulfonate, and alkyl diphenyl ether disulfonate.

Technical Field

The present invention relates to a herbicide composition, a weeding method and an efficacy enhancer composition for glufosinate-ammonium.

Background

Glufosinate or a salt thereof, for example, an ammonium salt of glufosinate is a known amino acid herbicide that is absorbed through green parts of plants, and it is considered that ammonia accumulation is caused by glutamine synthetase inhibition, physiological functions of plants are inhibited, and herbicidal activity is exhibited.

Conventionally, various compounds have been used in combination in a composition containing an agricultural chemical in order to sufficiently exhibit the effect of the agricultural chemical.

Japanese patent application laid-open No. 2001-524496 discloses a surfactant system for liquid aqueous or aqueous organic complexes comprising 1 or more than 1 basic co-surfactant and 1 or more than 1 surfactant from the group of acidic phosphates. Such complexes comprise, for example, glufosinate-ammonium or glyphosate (salts).

Japanese patent application laid-open No. 2002-537312 discloses an aqueous pesticidal concentrate complex comprising: a) a pesticide electrolyte, b) a water-insoluble pesticide, c) an alkyl glycoside, and d) a cosurfactant that interacts with the alkyl glycoside to form a structured aqueous system.

Disclosure of Invention

The invention provides a herbicide composition using glufosinate-ammonium with excellent weeding effect.

The present invention relates to a herbicide composition containing the following component (a), component (B), and component (C), wherein the mass ratio of the content of component (B) to the content of component (C), (C)/(B), is 0.010 to 0.50.

Component (A): a compound selected from glufosinate and salts thereof,

component (B): a compound represented by the following general formula (B-I),

R^1bO(R^2bO)_nSO₃ ^-M⁺ (B-I)

[ in the formula, R^1bIs C8-24A hydrocarbyl radical of R^2bIs an alkanediyl group having 2 to 4 carbon atoms, n is an average molar number of addition and is 0 to 30, M⁺Are counter ions. Angle (c)

Component (C): 1 or more compounds selected from the group consisting of the compounds represented by the following general formula (C-I) and the compounds represented by the following general formula (C-II)

R^1c-OH (C-I)

[ in the formula, R^1cRepresents a hydrocarbon group having 8 to 18 carbon atoms. Angle (c)

R^2c-N(R^3c)₂ (C-II)

[ in the formula, R^2cRepresents a hydrocarbon group having 6 to 18 carbon atoms. R^3cIndependently represents a hydrogen atom, a methyl group or a hydroxyethyl group. Angle (c)

In addition, the present invention relates to a weeding method in which a herbicide spread liquid prepared from the herbicide composition of the present invention described above is spread on a plant.

The present invention also relates to an efficacy-enhancing agent composition for glufosinate containing the above-mentioned component (B) and the above-mentioned component (C), wherein the mass ratio of the content of the component (B) to the content of the component (C), i.e., (C)/(B), is 0.010 to 0.50.

According to the present invention, a herbicide composition using glufosinate-ammonium having an excellent herbicidal effect can be provided.

Detailed Description

[ herbicide composition ]

The reason why the herbicidal composition of the present invention is excellent in herbicidal effect is not clear, but is presumed to be as follows. The herbicidal performance of glufosinate-ammonium is greatly affected by the amount of adhering liquid droplets containing glufosinate-ammonium spread, and in order to improve the adhesion, it is important to optimize the contact area between the liquid droplets and plants (leaves, etc.) and to increase the adhesion energy. It is presumed that in the present invention, by using the component (B) and the component (C) at a predetermined ratio, high adhesion energy and an optimum contact area can be both satisfied, adhesion is improved, and as a result, the herbicidal effect is improved. It is also presumed that when the component (D) is contained, the amount of the droplets adhering can be further increased for the same reason as described above, and the herbicidal effect can be further improved.

< ingredient (A) >)

The component (a) of the present invention is a compound selected from glufosinate and salts thereof. The component (A) is a raw pesticide of an amino acid herbicide. It should be noted that, as glufosinate ammonium registered as an agricultural chemical in japan, there is a compound of DL-homoalanin-4-yl (methyl) phosphinic acid ammonium, that is, an ammonium salt, but in the case where glufosinate ammonium is mentioned in the present invention, it means a compound of an acid type (a compound in which a phosphinic acid group is an acid type).

The salt of glufosinate-ammonium includes ammonium salt and sodium salt.

When the component (a) is incorporated into a herbicide composition, an aqueous solution, a liquid, a hydrating agent, or the like containing the component (a) may be used.

< ingredient (B) >)

The component (B) of the present invention is a compound represented by the following general formula (B-I).

R^1bO(R^2bO)_nSO₃ ^-M⁺ (B-I)

[ in the formula, R^1bIs a hydrocarbon group of 8 to 24 carbon atoms, R^2bIs an alkanediyl group having 2 to 4 carbon atoms, n is an average molar number of addition and is 0 to 30, M⁺Are counter ions. Angle (c)

In the general formula (B-I), R is from the viewpoint of enhancing the herbicidal effect^1bThe aliphatic hydrocarbon group is preferable, the alkyl group is more preferable, and the linear alkyl group is further preferable. From the viewpoint of enhancing herbicidal effect, R^1bHas 8 or more carbon atoms, preferably 10 or more carbon atoms, and more preferably 12 or more carbon atoms, and is preferably 16 or less, and more preferably 14 or less carbon atoms, from the viewpoint of enhancing the herbicidal effect and improving the compounding stability.

From the viewpoint of enhancing herbicidal effect, R^2bThe number of carbon atoms of (b) is preferably 2 to 3, more preferably 2. R^2bEthylene is preferred.

From the viewpoint of enhancing the herbicidal effect, n is 0 or more, preferably 1 or more, more preferably 2 or more, and from the viewpoint of enhancing the herbicidal effect and improving the compounding stability, n is preferably 10 or less, more preferably 5 or less, and further preferably 3 or less.

M⁺Examples of the counter ion include an ion of an alkali metal such as sodium or potassium, an ammonium ion, and a triethanolammonium ion, and from the viewpoint of enhancing the herbicidal effect and improving the compounding stability, an alkali metal ion is preferable, and a sodium ion is more preferable.

< ingredient (C) >)

The component (C) of the present invention is at least 1 compound selected from the group consisting of the compounds represented by the above general formula (C-I) (hereinafter, also referred to as component (C-I)) and the compounds represented by the above general formula (C-II) (hereinafter, also referred to as component (C-II)).

In the component (C-I), R is from the viewpoint of enhancing the herbicidal effect^1cThe aliphatic hydrocarbon group is preferable, the alkyl group is more preferable, the linear alkyl group is more preferable from the viewpoint of availability, and the branched alkyl group is more preferable from the viewpoint of improvement of the blending stability. From the viewpoint of enhancing herbicidal effect, R^1cHas 8 or more carbon atoms, preferably 10 or more carbon atoms, and is preferably 18 or less, more preferably 16 or less, and even more preferably 14 or less, from the viewpoint of enhancing the herbicidal effect and improving the compounding stability.

In the component (C-II), R is from the viewpoint of enhancing the herbicidal effect^2cThe aliphatic hydrocarbon group is preferable, the alkyl group is more preferable, and the linear alkyl group is further preferable. From the viewpoint of enhancing herbicidal effect, R^2cThe number of carbon atoms of (b) is preferably 8 or more, more preferably 10 or more, and from the viewpoint of enhancing the herbicidal effect and improving the compounding stability, it is preferably 18 or less, more preferably 16 or less, still more preferably 14 or less, and still more preferably 12 or less. R^3cIndependently, a hydrogen atom or a methyl group is preferred, and a methyl group is more preferred. Depending on the composition and the like, the component (C-II) may form a salt in the herbicide composition. In the present invention, such salts are also regarded as the component (C-II).

< composition et al >

The herbicidal composition of the present invention contains the component (a) in an amount of preferably 5% by mass or more, more preferably 10% by mass or more, and even more preferably 15% by mass or more from the viewpoint of enhancing the herbicidal effect and economy during transportation and storage, and contains the component (a) in an amount of preferably 40% by mass or less, more preferably 30% by mass or less, and even more preferably 25% by mass or less from the viewpoint of improving the mixing stability and safety. In the present invention, the content of the component (a) in the composition is based on a value converted into an acid-type compound.

The herbicidal composition of the present invention contains the component (B) in an amount of preferably 5% by mass or more, more preferably 10% by mass or more, and even more preferably 15% by mass or more from the viewpoint of enhancing the herbicidal effect and economy during transportation and storage, and contains the component (B) in an amount of preferably 40% by mass or less, more preferably 30% by mass or less, and even more preferably 20% by mass or less from the viewpoint of improving the mixing stability and safety. In the present invention, the content of the component (B) in the composition is based on a value converted into an acid-type compound.

The herbicidal composition of the present invention contains the component (C) in an amount of preferably 0.05% by mass or more, more preferably 0.1% by mass or more, and even more preferably 0.25% by mass or more from the viewpoint of enhancing the herbicidal effect and the economic efficiency in transportation and storage, and contains the component (C) in an amount of preferably 8% by mass or less, more preferably 5% by mass or less, and even more preferably 3% by mass or less from the viewpoint of enhancing the herbicidal effect and improving the mixing stability. In the present invention, the content of the component (C-II) in the component (C) is based on a value converted into an amine-type compound.

The herbicidal composition of the present invention preferably has a mass ratio of the content of the component (a) to the content of the component (C), (C)/(a), of preferably 0.01 or more, more preferably 0.02 or more, and still more preferably 0.03 or more, from the viewpoint of enhancing the herbicidal effect, and preferably 0.4 or less, more preferably 0.35 or less, further preferably 0.3 or less, and still more preferably 0.2 or less, from the viewpoint of enhancing the herbicidal effect and improving the mixing stability.

The herbicidal composition of the present invention has a mass ratio of the content of the component (B) to the content of the component (C), i.e., (C)/(B), of 0.010 or more, preferably 0.015 or more, more preferably 0.025 or more, further preferably 0.050 or more, and further preferably 0.10 or more, from the viewpoint of enhancing the herbicidal effect, and is 0.50 or less, preferably 0.45 or less, more preferably 0.34 or less, further preferably 0.25 or less, further preferably 0.20 or less, and further preferably 0.12 or less, from the viewpoint of enhancing the herbicidal effect.

When the component (C) is the component (C-I), the mass ratio (C)/(B) is preferably 0.02 or more, more preferably 0.05 or more, and further preferably 0.1 or more from the viewpoint of enhancing the herbicidal effect, and is preferably 0.45 or less, more preferably 0.3 or less, and further preferably 0.2 or less from the viewpoint of enhancing the herbicidal effect and improving the compounding stability.

In addition, when the component (C) is the component (C-II), the mass ratio (C)/(B) is preferably 0.012 or more, more preferably 0.016 or more, and further preferably 0.020 or more from the viewpoint of enhancing the herbicidal effect, and is preferably 0.25 or less, more preferably 0.15 or less, further preferably 0.10 or less, and further preferably 0.060 or less from the viewpoint of enhancing the herbicidal effect and improving the blending stability.

In the herbicidal composition of the present invention, the total content of the component (B) and the component (C) is preferably 5% by mass or more, more preferably 5.5% by mass or more, further preferably 10% by mass or more, and further preferably 15% by mass or more from the viewpoint of enhancing the herbicidal effect, and is preferably 40% by mass or less, more preferably 30% by mass or less, and further preferably 25% by mass or less from the viewpoint of improving the mixing stability and the economy during transportation and storage.

The mass ratio [ (B) + (C) ]/(a) of the content of the component (a) to the total content of the component (B) and the component (C) is preferably 0.1 or more, more preferably 0.3 or more, and further preferably 0.5 or more from the viewpoint of enhancing the herbicidal effect, and is preferably 3 or less, more preferably 2 or less, and further preferably 1.5 or less from the viewpoint of improving the economy during transportation and storage and the blending stability.

The herbicide composition of the present invention preferably further contains the following component (D).

Component (D): an aromatic sulfonic acid salt having an aliphatic hydrocarbon group,

the component (D) may be an aromatic sulfonate having a substituted hydrocarbon group on the aromatic ring, for example, an aliphatic hydrocarbon group.

The aliphatic hydrocarbon group of the component (D) is preferably an alkyl group, and more preferably a linear alkyl group, from the viewpoint of enhancing the herbicidal effect.

The aliphatic hydrocarbon group of the component (D) has preferably 10 or more carbon atoms, more preferably 12 or more carbon atoms, from the viewpoint of enhancing the herbicidal effect, and preferably 16 or less, more preferably 14 or less carbon atoms, from the viewpoint of enhancing the herbicidal effect and improving the compounding stability.

The component (D) is preferably at least 1 compound selected from the group consisting of alkylbenzenesulfonates, alkylnaphthalenesulfonates, and alkyldiphenylether disulfonates. The alkyl group in these compounds is preferably a straight chain from the viewpoint of enhancing the herbicidal effect. The number of carbon atoms of the alkyl group is preferably 10 or more, more preferably 12 or more from the viewpoint of enhancing the herbicidal effect, and is preferably 16 or less, more preferably 14 or less from the viewpoint of enhancing the herbicidal effect and improving the compounding stability.

Examples of the salt of the component (D) include alkali metal salts such as sodium salt and potassium salt, and ammonium salt, and sodium salt is preferable from the viewpoint of enhancing the herbicidal effect and improving the compounding stability.

When the herbicidal composition of the present invention contains the component (D), the composition contains the component (D) in an amount of preferably 0.25% by mass or more, more preferably 0.5% by mass or more, and further preferably 0.8% by mass or more from the viewpoint of enhancing the herbicidal effect, and contains the component (D) in an amount of preferably 5% by mass or less, more preferably 3% by mass or less, and further preferably 1.5% by mass or less from the viewpoint of enhancing the herbicidal effect and improving the mixing stability. In the present invention, the content of the component (D) in the composition is based on a value converted into an acid-type compound.

In addition, when the herbicidal composition of the present invention contains the component (D), the mass ratio of the content of the component (B) to the content of the component (D), (D)/(B), is preferably 0.01 or more, more preferably 0.03 or more, further preferably 0.05 or more, and preferably 0.4 or less, more preferably 0.2 or less, further preferably 0.1 or less, further preferably 0.08 or less.

From the viewpoint of formulation stability, the herbicide composition of the present invention is preferably a liquid composition, and more preferably a liquid composition containing water. The herbicidal composition of the present invention contains water in an amount of preferably 10% by mass or more, more preferably 20% by mass or more, and still more preferably 30% by mass or more from the viewpoint of blending stability, and contains water in an amount of preferably 80% by mass or less, more preferably 70% by mass or less, and still more preferably 60% by mass or less from the viewpoint of economy during transportation and storage.

As water, tap water, distilled water, deionized water, and the like can be used within a range that does not inhibit the effect of the herbicide composition of the present invention, and deionized water is preferred from the viewpoint of stability.

The herbicide composition of the present invention may contain a technical pesticide of a conventional herbicide (hereinafter, also referred to as component (a')) in addition to component (a).

Examples of the component (a') include diphenyl ether herbicides such as acifluorfen (acifluorfen), chloronitrone (chloronitrone), fomesafen (fomesafen), lactofen (lactofen), oxyfluorfen (oxyfluorfen) and aclonifen (aclonifen); phenoxy carboxylic acid herbicides such as 2,4-D, clomeprop (clomeprop), MCPA, MCPB and MCPP; dinitrophenol herbicides such as DNBP and dinoterb; carbamate herbicides such as carpetamide (carbetamide) and IPC; bipyridinium herbicides such as diquat and paraquat; urea herbicides such as diuron (diuron), oxazolon (dimefuron), thidiazuron (Ethidimuron), fenuron (fenuron), metoxuron (metoxuron), and bentazon (bentazone); triazine herbicides such as ametryn (ametryn), atrazine (atrazine), prometon (prometon), and thiabendazole (trietazine); sulfonylurea herbicides such as amidosulfuron, cinosulfuron, flazasulfuron, iodosulfuron, nicosulfuron, etc.; and the like.

In the herbicidal composition of the present invention, the content of the component (a') is preferably 20% by mass or less, more preferably 15% by mass or less, even more preferably 10% by mass or less, even more preferably 5% by mass or less, and preferably 0% by mass or more, and may be 0% by mass, from the viewpoints of reduction of environmental load and safety. In the herbicidal composition of the present invention, the mass ratio of the content of the component (a) to the content of the component (a')/(a) is preferably less than 1, more preferably 0.8 or less, further preferably 0.5 or less, further preferably 0.2 or less, further preferably 0.1 or less, further preferably 0.05 or less, and preferably 0 or more, and may be 0, from the viewpoints of reduction of environmental load and safety.

The herbicidal composition of the present invention may optionally contain compounds other than the components (a) to (C), water, and the optional component (D) and the optional component (a'), for example, defoaming agents, surfactants, solvents, chelating agents, pH adjusters, inorganic salts, solubilizers, colorants, anti-evaporation agents, thickeners, and the like.

Examples of the defoaming agent include silicone defoaming agents, polyoxyalkylene-modified hydrocarbon defoaming agents, fluorine defoaming agents, and the like, and silicone defoaming agents are preferable from the viewpoint of defoaming properties. The silicone defoaming agent is more preferably a silicone oil or a modified silicone oil, and from the viewpoint of blending stability, a modified silicone oil is more preferably used. Commercially available silicone oils include "ANTIFOAM E-20" (manufactured by Kao corporation), "KF-50", "KF-73", "KF-71", "KM-7750", "KM-98", "KM-7752" and "KF-96" (manufactured by shin-Etsu chemical Co., Ltd.), and preferably "KF-7750", "KF-7752" and "KM-98". Commercially available modified silicone oils include "KF-6701" and "KS-531" (manufactured by shin-Etsu chemical Co., Ltd.), preferably "KF-6701". The defoaming agent may be combined by 2 or more. When the herbicide composition of the present invention contains a defoaming agent, the content thereof is preferably 0.005% by mass or more, more preferably 0.01% by mass or more from the viewpoint of defoaming property, and is preferably 0.1% by mass or less, more preferably 0.05% by mass or less from the viewpoint of improvement in blending stability and reduction in environmental load. The mass ratio of the defoaming agent to the component (B), that is, the mass ratio of the defoaming agent/the component (B), is preferably 0.0002 or more, more preferably 0.0004 or more, and further preferably 0.0008 or more from the viewpoint of defoaming properties, and is preferably 0.01 or less, more preferably 0.008 or less, and further preferably 0.003 or less from the viewpoint of reduction in compounding stability and environmental load.

The herbicide composition of the present invention may contain a surfactant (hereinafter, also referred to as component (E)) other than component (B), component (C), component (D) and the components used as the above-mentioned antifoaming agent. Examples of the component (E) include anionic surfactants [ other than the components (B) and (D) ], cationic surfactants, nonionic surfactants, and amphoteric surfactants. The component (E) may be used in combination of 2 or more.

Examples of the anionic surfactant include dialkyl sulfosuccinates, α -olefin sulfonates, alkane sulfonates, fatty acid salts, and polyoxyalkylene fatty acid salts. The anionic surfactant is preferably 1 or more selected from the group consisting of dialkyl sulfosuccinates, fatty acid salts, polyoxyalkylene fatty acid salts, and α -olefin sulfonates, and more preferably 1 or more selected from the group consisting of dialkyl sulfosuccinates, fatty acid salts, polyoxyalkylene fatty acid salts, and α -olefin sulfonates. Examples of the salt of the anionic surfactant include alkali metal salts such as sodium salt and potassium salt.

Examples of the nonionic surfactant include polyoxyalkylene alkyl ethers, sorbitan fatty acid esters, polyoxyalkylene alkylamines, alkyl (poly) glycosides, and the like. The nonionic surfactant is preferably 1 or more selected from alkyl (poly) glycosides and polyoxyalkylene alkyl ethers.

Examples of the amphoteric surfactant include alkylbetaines and alkyl (having 8 to 18 carbon atoms) dimethylamine oxides.

The component (E) is more preferably 1 or more selected from the group consisting of alkylbetaines, alkyl (having 8 or more and 18 or less carbon atoms) dimethylamine oxides, and alkyl (poly) glycosides from the viewpoint of blending stability.

In the case where the herbicidal composition of the present invention contains the component (E), the content of the component (E) is preferably 0.5% by mass or more, more preferably 1% by mass or more, and further preferably 2% by mass or more, from the viewpoint of enhancing the herbicidal effect and improving the degree of freedom of blending, and is preferably 20% by mass or less, more preferably 15% by mass or less, and further preferably 10% by mass or less, from the viewpoint of enhancing the herbicidal effect and blending stability. In the herbicidal composition of the present invention, the mass ratio of (component (B) + component (C))/component (E) is preferably 2 or more, more preferably 4 or more, and still more preferably 6 or more from the viewpoint of enhancing the herbicidal effect and economic efficiency in transportation and storage, and is preferably 50 or less, more preferably 20 or less, and still more preferably 10 or less from the viewpoint of enhancing the herbicidal effect and enhancing the degree of freedom in blending. When the component (D) is an anionic surfactant, the content of the component (D) in the composition may be based on a value converted into an acid-type compound.

The solvent is preferably a water-miscible solvent from the viewpoint of improving the compounding stability and the handling property due to the lowering of the viscosity, and examples thereof include monohydric alcohols having 1 to 4 carbon atoms, polyhydric alcohols having 2 to 4 carbon atoms, glycol ethers having 3 to 10 carbon atoms in total, and preferably glycol ethers. Examples of the monohydric alcohol include 2-propanol and 1-butanol. Examples of the polyhydric alcohol include 1, 3-propanediol and the like. The glycol ether includes propylene glycol monomethyl ether and dipropylene glycol, and propylene glycol monomethyl ether is more preferable. Examples of the other solvent include tetrahydrofurfuryl alcohol and the like. The solvent may be used in combination of 2 or more. When the herbicide composition of the present invention contains a solvent, the composition contains preferably 2% by mass or more, more preferably 5% by mass or more, and even more preferably 8% by mass or more of the solvent from the viewpoint of improving the mixing stability, and contains preferably 20% by mass or less, more preferably 15% by mass or less, and even more preferably 12% by mass or less of the solvent from the viewpoint of enhancing the herbicidal effect and the economy during transportation and storage. The mass ratio of the solvent to the component (B), i.e., the mass ratio of the solvent to the component (B), is preferably 0.05 or more, more preferably 0.25 or more, from the viewpoint of improving the blending stability, and is preferably 2 or less, more preferably 1 or less, from the viewpoint of economy during transportation and storage.

The herbicide composition of the present invention may be a herbicide composition comprising component (a), component (B) and component (C), wherein the mass ratio of the amount of component (B) to the amount of component (C), i.e., (C)/(B), is 0.010 to 0.50. The contents of the above-mentioned components may be used instead of the amounts to be blended.

From the viewpoint of stability, the viscosity of the herbicidal composition of the present invention at 25 ℃ is preferably 1.0mPa · s or more, more preferably 10mPa · s or more, further preferably 25mPa · s or more, and is preferably 200mPa · s or less, more preferably 100mPa · s or less, and is further preferably 70mPa · s or less from the viewpoint of handling property. The viscosity was measured using a Brookfield model B viscometer (model: DV 2T). The rotor used CPA-41Z, and the liquid volume was 2mL, the rotation speed was 10rpm, and the value 1 minute after the start of the measurement was taken as the viscosity.

The herbicide composition of the present invention is preferably excellent in transparency. For example, the absorbance at a wavelength of 660nm is preferably 1.0 or less, more preferably 0.5 or less, still more preferably 0.1 or less, and still more preferably 0.05 or less. The absorbance was measured by using a two-beam spectrophotometer (U-2910, HITACHI). The measurement cell used was a four-side transparent standard disposable measurement cell (product code 01960/00) manufactured by Nikko Hansen, and the reference cell used was ultrapure water for measurement.

The present invention provides use of a composition as a herbicide, the composition comprising a component (A), a component (B), and a component (C), wherein the mass ratio of the content of the component (B) to the content of the component (C), (C)/(B), is 0.010 to 0.50. In the use of the present invention as a herbicide, the modes described in the herbicide composition of the present invention can be suitably applied. In the use as a herbicide of the present invention, the component (a), the component (B), the component (C), an optional component and their preferred embodiments are the same as those described in the herbicide composition of the present invention.

The present invention provides a method for producing a herbicide composition comprising a component (A), a component (B) and a component (C) in a mixture, wherein the mass ratio of the amount of the component (B) to the amount of the component (C), i.e., (C)/(B), is 0.010 to 0.50. In the method for producing the herbicide composition of the present invention, the herbicide composition of the present invention and the mode described below for the efficacy-enhancing agent composition for glufosinate-ammonium of the present invention can be suitably applied. In the method for producing the herbicidal composition of the present invention, the components (a), (B), (C), and optional components and their preferred embodiments are the same as those described in the herbicidal composition of the present invention and the efficacy-enhancing agent composition for glufosinate-ammonium of the present invention. In the method for producing the herbicide composition of the present invention, water is preferably mixed.

[ weeding method ]

According to the present invention, a weeding method can be provided in which a herbicide spread liquid prepared from the herbicide composition of the present invention is spread on a plant. The herbicide dispersion liquid is preferably prepared by adding water to the herbicide composition of the present invention.

In the weeding method of the present invention, the modes described in the herbicide composition of the present invention can be suitably applied.

In the weeding method of the present invention, the herbicide composition of the present invention is diluted with water so that the total content of the component (a), the component (B), and the component (C) in the herbicide dispersion is preferably 200ppm or more, more preferably 400ppm or more, and still more preferably 500ppm or more, from the viewpoint of improving the herbicidal effect, and the herbicide composition of the present invention is diluted with water so that the total content of the component (a), the component (B), and the component (C) in the herbicide dispersion is preferably 50000ppm or less, more preferably 10000ppm or less, and still more preferably 5000ppm or less, from the viewpoint of reducing the environmental load.

In the weeding method of the present invention, the herbicide dispersion is preferably dispersed at a rate of 0.5L/ha or more, more preferably 50L/ha or more, still more preferably 200L/ha or more, and yet more preferably 500L/ha or more, from the viewpoint of obtaining the efficacy of the pesticide, and at a rate of 2000L/ha or less, more preferably 1500L/ha or less, still more preferably 1200L/ha or less, and yet more preferably 1000L/ha or less, from the viewpoint of reducing the environmental load.

The weeding method of the present invention is a weeding method in which a predetermined spreading liquid is applied to weeds as plants to be repelled. Weeds are recognized in the agricultural field as herbs that are harmful to crop production when growing and developing in and around agricultural fields. In addition, in fields other than agriculture, for example, there is known a herb which is not limited to agricultural land but naturally grows and develops in non-agricultural land such as roads, railways, dams, factory sites, construction sites, lawns, courtyards, and the like, and which impairs the function of the land or causes problems in disaster prevention and landscaping. In the present invention, any of these herbs is included as weeds. The weeds include broadleaf weeds, paddy weeds and the like. Broadleaf weeds have a network-like vein unlike linear-leaf weeds and weeds having parallel veins, such as rice weeds.

Examples of weeds to be subjected to the weeding method of the present invention include weeds in the family oryza sativa. Examples of the weeds of the family oryziaceae include barnyard grass, green bristlegrass, setaria viridis, bluegrass, alopecurus, crabgrass, levant crabgrass, aizoon stonecrop herb, cocksfoot grass (orchardgrass), miscanthus, paspalum, cogongrass, pennisetum, reed, and phyllostachys, and barnyard grass is preferable from the viewpoint of efficacy of agricultural chemicals.

The weeding method of the present invention can be performed on weeds selected from broadleaf weeds and paddy weeds. In addition, the weeding method of the present invention can be directed to barnyard grass.

[ efficacy enhancer composition for glufosinate ]

According to the present invention, there is provided an efficacy-enhancing agent composition for glufosinate, comprising a component (B) and a component (C), wherein the mass ratio of the content of the component (B) to the content of the component (C), (C)/(B), is 0.010 to 0.50.

The efficacy enhancer composition for glufosinate of the present invention is formulated with the ingredient (a) excluded.

The herbicidal composition of the present invention can be prepared by adding component (a) to the efficacy enhancer composition for glufosinate-ammonium of the present invention. That is, the method for producing the herbicide composition of the present invention may be a method for producing a mixture of the efficacy-enhancing agent composition for glufosinate-ammonium and the component (a).

The efficacy-enhancing agent composition for glufosinate of the present invention can be suitably applied in the manner described in the herbicide composition and the weeding method of the present invention. In the efficacy enhancer composition for glufosinate-ammonium of the present invention, the component (a), the component (B), the component (C) and their preferred modes are the same as those described in the herbicide composition of the present invention.

The efficacy-enhancing agent composition for glufosinate of the present invention contains the component (B) in an amount of preferably 10% by mass or more, more preferably 20% by mass or more, and even more preferably 30% by mass or more, from the viewpoint of ease of handling, enhancement of herbicidal effect, and economy during transportation and storage, and contains the component (B) in an amount of preferably 90% by mass or less, more preferably 80% by mass or less, and even more preferably 70% by mass or less, from the viewpoint of improvement of blending stability.

The efficacy-enhancing agent composition for glufosinate of the present invention contains the component (C) in an amount of preferably 0.1% by mass or more, more preferably 0.25% by mass or more, and even more preferably 0.5% by mass or more from the viewpoints of ease of handling, enhancement of herbicidal effect, and economy during transportation and storage, and contains the component (C) in an amount of preferably 20% by mass or less, more preferably 10% by mass or less, and even more preferably 5% by mass or less from the viewpoints of enhancement of herbicidal effect and improvement of compounding stability.

In the efficacy-enhancing agent composition for glufosinate of the present invention, the mass ratio of the content of the component (B) to the content of the component (C), i.e., (C)/(B), is 0.010 or more, preferably 0.015 or more, more preferably 0.025 or more, further preferably 0.050 or more, and still more preferably 0.10 or more, from the viewpoints of ease of handling and enhancement of herbicidal effect, and is 0.50 or less, preferably 0.45 or less, more preferably 0.34 or less, further preferably 0.25 or less, still more preferably 0.20 or less, and still more preferably 0.12 or less from the same viewpoint.

In the efficacy-enhancing agent composition for glufosinate of the present invention, the total content of the component (B) and the component (C) is preferably 10% by mass or more, more preferably 15% by mass or more, further preferably 20% by mass or more, and further preferably 30% by mass or more, from the viewpoint of economy during transportation and storage, and is preferably 90% by mass or less, more preferably 80% by mass or less, and further preferably 70% by mass or less from the viewpoint of improving the blending stability.

The efficacy-enhancing agent composition for glufosinate of the present invention may be an efficacy-enhancing agent composition for glufosinate, which comprises a component (B) and a component (C), and the mass ratio of the amount of the component (B) to the amount of the component (C), (C)/(B), is 0.010 to 0.50. The contents of the above-mentioned components may be used instead of the amounts to be blended.

The present invention provides a method for producing an efficacy-enhancing agent composition for glufosinate, which comprises mixing a component (B) and a component (C), wherein the mass ratio of the amount of the component (B) to the amount of the component (C), i.e., (C)/(B), is 0.010 to 0.50. In the method for producing the efficacy-enhancing agent composition for glufosinate-ammonium of the present invention, the herbicide composition of the present invention and the manner described in the efficacy-enhancing agent composition for glufosinate-ammonium of the present invention can be suitably applied. In the method for producing the efficacy-enhancing agent composition for glufosinate-ammonium of the present invention, the component (B), the component (C), any of the components, and their preferred embodiments are the same as those described in the herbicide composition of the present invention and the efficacy-enhancing agent composition for glufosinate-ammonium of the present invention. In the method for producing the efficacy enhancer composition for glufosinate-ammonium of the present invention, water is preferably mixed.

The efficacy enhancer composition for glufosinate of the present invention may be a liquid composition from the viewpoint of ease of handling. In addition, a liquid composition containing water is preferable.

The efficacy enhancer composition for glufosinate of the present invention contains water in an amount of preferably 5% by mass or more, more preferably 8% by mass or more, and still more preferably 10% by mass or more from the viewpoint of blending stability, and contains water in an amount of preferably 60% by mass or less, more preferably 50% by mass or less, and still more preferably 40% by mass or less from the viewpoint of economy during transportation and storage.

As water, tap water, distilled water, deionized water, or the like may be used as long as the effect of the efficacy enhancer composition for glufosinate-ammonium of the present invention is not impaired, and deionized water is preferable from the viewpoint of stability.

The efficacy enhancer composition for glufosinate of the present invention may optionally contain components (a) to (C), and compounds other than water, for example, antifoaming agents, surfactants, solvents, chelating agents, pH adjusters, inorganic salts, solubilizers, colorants, evaporation inhibitors, thickeners, and the like.

When the efficacy enhancer composition for glufosinate of the present invention is blended with component (a), it is preferably blended so that [ (B) + (C) ]/(a), which is the mass ratio of the blending amount of component (a) to the total blending amount of component (B) and component (C), is preferably 0.1 or more, more preferably 0.3 or more, and further preferably 0.5 or more, from the viewpoint of enhancing the herbicidal effect, and it is preferably blended so that [ (B) + (C) ]/(a) is preferably 3 or less, more preferably 2 or less, and further preferably 1.5 or less, from the viewpoint of reducing the environmental load and improving the blending stability. That is, the method for producing the herbicide composition of the present invention is preferably produced by mixing the component (a) and the efficacy-enhancing agent composition for glufosinate in such a manner that the mass ratio of the amount of the component (a) to the total amount of the component (B) and the component (C) [ (B) + (C) ]/(a) falls within the above range.

The efficacy enhancer composition for glufosinate of the present invention preferably contains the above-mentioned component (D). Specific examples and preferred modes of the component (D) are the same as those of the herbicidal composition of the present invention.

When the efficacy-enhancing composition for glufosinate of the present invention contains the component (D), the composition contains the component (D) in an amount of preferably 0.1% by mass or more, more preferably 0.25% by mass or more, and even more preferably 0.5% by mass or more from the viewpoint of enhancing the herbicidal effect and the economy at the time of transportation and storage, and contains the component (D) in an amount of preferably 20% by mass or less, more preferably 10% by mass or less, and even more preferably 5% by mass or less from the viewpoint of enhancing the herbicidal effect and improving the compounding stability. In addition, when the efficacy-enhancing composition for glufosinate of the present invention contains the component (D), the mass ratio of the content of the component (B) to the content of the component (D), i.e., (D)/(B), is preferably 0.01 or more, more preferably 0.03 or more, further preferably 0.05 or more, and preferably 0.4 or less, more preferably 0.2 or less, further preferably 0.1 or less, further preferably 0.08 or less.

The present invention provides use of a composition containing a component (B) and a component (C), wherein the (C)/(B) ratio of the mass ratio of the content of the component (B) to the content of the component (C) is 0.010 to 0.50. Further, the present invention provides a use of a composition for enhancing the efficacy of glufosinate, the composition comprising a component (B) and a component (C), wherein the mass ratio of the content of the component (B) to the content of the component (C), i.e., (C)/(B), is 0.010 or more and 0.50 or less. The composition preferably contains the component (D). In the use of the present invention as an efficacy-enhancing agent for glufosinate-ammonium and the uses described above, the modes described in the herbicide composition, the weeding method, and the efficacy-enhancing agent composition for glufosinate-ammonium of the present invention can be suitably applied. In the use of the present invention as an efficacy enhancer for glufosinate and the uses described above, the component (a), the component (B), the component (C) and their preferred modes are the same as those described in the herbicidal composition of the present invention.

The viscosity of the efficacy-enhancing agent composition for glufosinate of the present invention at 25 ℃ is preferably 10000mPa · s or more, more preferably 20000mPa · s or more, and further preferably 25000mPa · s or more from the viewpoint of stability of the composition, and is preferably 100000mPa · s or less, more preferably 80000mPa · s or less, and further preferably 50000mPa · s or less from the viewpoint of handling property. The viscosity was measured using a Brookfield model B viscometer (model: DV 2T). The rotor used CPA-41Z, and the liquid volume was 2mL, the rotation speed was 10rpm, and the value 1 minute after the start of the measurement was taken as the viscosity.

The absorbance at a wavelength of 660nm of the efficacy-enhancing agent composition for glufosinate of the present invention is preferably 0.1 or more, more preferably 0.5 or more, and even more preferably 1.0 or more, and is preferably 5.0 or less, more preferably 4.0 or less, and even more preferably 3.0 or less. The absorbance was measured by using a two-beam spectrophotometer (U-2910, HITACHI). The measurement cell used was a four-side transparent standard disposable measurement cell (product code 01960/00) manufactured by Nikko Hansen, and the reference cell used was ultrapure water for measurement.

Examples

The following are examples and comparative examples of the compounding ingredients used.

< formulation >

Component (A)

A1: glufosinate ammonium salt (Fuji film and Guangdong chemical Co., Ltd.)

Ingredient (B)

B1: polyoxyethylene (average molar number of addition 2) sodium lauryl ether sulfate ("EMAL 270J" manufactured by Kao corporation, 70 mass% aqueous solution of active ingredient)

B2: polyoxyethylene (average addition mole number 3) sodium lauryl ether sulfate ("EMAL 20C" manufactured by Kao corporation, 25 mass% aqueous solution of active ingredient)

Ingredient (C)

C1: decyl alcohol (Kalcol 1098, King of flowers)

C2: dodecanol (KALCOL 2098, made by Kao corporation)

C3: n, N-Dimethyldecylamine (manufactured by Tokyo Kasei Co., Ltd.)

C4: isotridecanol (KH Neochem "tridecanol", manufactured by Kyowa Kagaku Co., Ltd.)

Ingredient (D)

D1: sodium dodecylbenzenesulfonate (NEOPELEX G-25, 25% by mass aqueous solution of active ingredient, manufactured by Kao corporation)

Ingredient (E)

E1: decyl glucoside (MYDOL 10, manufactured by Kao corporation)

Solvent(s)

PM: propylene glycol monomethyl ether (Methylpropylene glycol manufactured by Nippon emulsifier Co., Ltd.)

Defoaming agent

KF-6701: modified silicone oil, KF-6701, manufactured by shin-Etsu chemical Co., Ltd

< example 1 and comparative example 1 >

The herbicide compositions shown in tables 1 and 2 were prepared using the above compounding ingredients, and the following items were evaluated. The results are shown in tables 1 and 2. The herbicidal compositions of tables 1, 2 are prepared by conventional methods. That is, the component (A), the component (B), the component (C), the component (D), the component (E), a solvent and an antifoaming agent were added to an appropriate amount of ion-exchanged water in the amounts shown in the tables, and the mixture was dissolved at room temperature (25 ℃ C.). All of the mass% of the components in tables 1 and 2 are values based on the active ingredient (a part of the components are converted into acid-type compounds or amine-type compounds). In tables 1 and 2, the "balance" of water is an amount based on 100 mass% of the entire composition.

[ method of testing the stability of blending 1]

10g of the herbicide composition shown in Table 1 immediately after preparation was placed in a transparent glass container (capacity 20mL), stored at 80 ℃ for 1 day, and the appearance was visually observed to determine the mixing stability according to the following criteria. The results are shown in Table 1. When the glufosinate ammonium salt was replaced with glyphosate ammonium salt (manufactured by fuji film and wako pure chemical industries, ltd.), the mixture was not homogenized under any of the conditions shown in table 1.

And (3) homogenizing: not separated into two layers and uniform.

Separation: separated into two layers.

[ test method for herbicidal Property 1]

Barnyard grass was grown in a 9cm flowerpot, and plants having a plant height of about 40cm were subjected to the test. 3.3g of each herbicide composition shown in tables 1 and 2 was added to 1L of water, and the mixture was uniformly stirred to prepare each herbicide dispersion. For barnyard grass in 5 pots, each prepared herbicide dispersion liquid was spread on the leaf surface in such a manner that a spreading amount equivalent to 25L/10a was applied to the entire plant body. The herbicidal properties after 14 days from the foliar application were evaluated.

Evaluation of the herbicidal properties was determined by visual observation, and evaluation was made by scoring the state of the untreated pot to which no herbicide was applied as 0 point and the state of complete withering of the overground part of barnyard grass as 100 points. For the evaluation, the herbicidal effect was evaluated for each pot, and the average values of the evaluation points are shown in tables 1 and 2. The higher the value, the higher the herbicidal efficacy.

[ Table 1]

[ Table 2]

In examples 1 to 22 containing an antifoaming agent, foaming of the composition was suppressed while maintaining herbicidal performance, and productivity, ease of filling, ease of preparation of the herbicide dispersion, and handling properties of the composition were improved.

< example 2 and comparative example 2 >

Using the above compounding ingredients, the efficacy enhancer composition for glufosinate shown in table 3 was prepared, and the following items were evaluated. The results are shown in Table 3. The efficacy enhancer composition for glufosinate of table 3 was prepared by conventional methods. That is, the component (B) and the component (C) were added in the amounts shown in the table to an appropriate amount of ion-exchanged water, and dissolved at room temperature (25 ℃ C.). All of the mass% of the blending components in table 3 are values based on the active ingredient (a part of the components are values converted into acid-type compounds or amine-type compounds). In table 3, "the balance" of water is an amount that represents 100% by mass of the entire composition.

[ method for measuring viscosity of efficacy enhancer composition ]

The viscosities of the efficacy enhancer compositions of Table 3 were measured using a digital rotational viscometer (model number DV2T) manufactured by Brookfield corporation. The cone rotor used CPA-41Z, liquid volume 2mL, 10rpm, the measurement of the initial 1 minutes after the value as viscosity. The results are shown in Table 3.

[ method of testing the stability of blending 2]

A herbicide composition was prepared by a conventional method using 50 parts by mass of the efficacy enhancer composition of table 3, 20 parts by mass of glufosinate ammonium salt and 30 parts by mass of water, and 10g of the prepared herbicide composition was placed in a transparent container (capacity 20mL) made of glass, stored in a thermostat at 80 ℃ for 1 day, and the appearance thereof was visually observed, and the mixing stability was judged by the following criteria. The results are shown in Table 3. When the glufosinate ammonium salt was replaced with the glyphosate ammonium salt, the mixture became inhomogeneous under any of the conditions in table 3.

And (3) homogenizing: not separated into two layers and uniform.

Separation: separated into two layers.

[ test method for herbicidal Property 2]

The herbicidal properties were evaluated in the same manner as in the test method for herbicidal properties 1, using the herbicidal composition prepared in the same composition ratio as in the test method for formulation stability 2. The results are shown in Table 3.

[ Table 3]