Aqueous suspension-form pesticidal composition

1. An aqueous suspension-form pesticidal composition comprising:

at least one pesticidal active ingredient selected from the group consisting of amine derivatives represented by the following general formula (1) and salts thereof; a highly-purified and partially-desulfonated lignosulfonate; and an aqueous dispersion medium

 in the general formula (1),

Ar represents a pyridyl group optionally substituted with a halogen atom, a C1-6 alkyl group optionally substituted with a halogen atom, a C1-6 alkyloxy group optionally substituted with a halogen atom, a hydroxyl group, a cyano group, or a nitro group; or a pyrimidyl group optionally substituted with a halogen atom, a C1-6 alkyl group optionally substituted with a halogen atom, a C1-6 alkyloxy group optionally substituted with a halogen atom, a hydroxyl group, a cyano group, or a nitro group,

R 1 represents a hydrogen atom or a C1-6 alkyl group,

Y represents a hydrogen atom, a halogen atom, a hydroxyl group, a C1-6 alkyl group optionally substituted with a halogen atom, a C1-6 alkyloxy group optionally substituted with a halogen atom a cyano group, a formyl group, or a nitro group, and

R 2 represents a C1-6 alkyl group substituted with at least one halogen.

2. The aqueous suspension-form pesticidal composition according to claim 1 , wherein

the amine derivative is at least one selected from the group consisting of N-[1-((6-chloropyridin-3-yl)methyl)pyridin-2(1H)-ylidene]-2,2,2-trifluoroacetamide, N-[1-((6-chloro-5-fluoropyridin-3-yl)methyl)pyridin-2(1H)-ylidene]-2,2,2-trifluoroacetamide, N-[1-((6-bromopyridin-3-yl)methyl)pyridin-2(1H)-ylidene]-2,2,2-trifluoroacetamide, N-[1-(1-(6-chloropyridin-3-yl)ethyl)pyridin-2(1H)-ylidene]-2,2,2-trifluoroacetamide, N-[1-((6-chloropyridin-3-yl)methyl)pyridin-2(1H)-ylidene]-2,2-difluoroacetamide, 2-chloro-N-[1-((6-chloropyridin-3-yl)methyl)pyridin-2(1H)-ylidene]-2,2-difluoroacetamide, N-[1-((2-chloropyrimidin-5-yl)methyl)pyridin-2(1H)-ylidene]-2,2,2-trifluoroacetamide, and N-[1-((6-chloropyridin-3-yl)methyl)pyridin-2(1H)-ylidene]-2,2,3,3,3-pentafluoropropanamide.

3. The aqueous suspension-form pesticidal composition according to claim 1 , wherein an amount of the highly-purified and partially-desulfonated lignosulfonate blended is 1 to 5% by weight.

4. The aqueous suspension-form pesticidal composition according to claim 1 , further comprising a thickener.

5. The aqueous suspension-form pesticidal composition according to claim 4 , wherein

the thickener is at least one selected from the group consisting of xanthan gum, guar gum, carrageenans, carboxymethyl cellulose, polyvinyl pyrrolidone, and carboxyvinyl polymers.

6. The aqueous suspension-form pesticidal composition according to claim 2 , further comprising a thickener.

7. The aqueous suspension-form pesticidal composition according to claim 3 , further comprising a thickener.