| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject preparation having high stability of agrochemical activities, and excellent in dispersibility in water of the agrochemical active ingredient when scattering the preparation by allowing a specific agrochemical active ingredient, polyvinyl alcohol, a high boiling point solvent and water to be included in the preparation. SOLUTION: This aqueous suspension preparation directly scattered on flooding paddy field comprises (A) 0.1-60 wt.% agrochemical active ingredient of a sulforlylurea-based herbicidal active ingredient [e.g. methyl=α-(4,6- dimethoxypyrimidin-2-ylcarbamoylsulfamoyl)-o-toluate (bensulfuron-methyl)] and/or a herbicidal active ingredient having terminating activities against Panicum crus-galli (e.g. thenylchlor), (B) 0.1-20 wt.% polyvinyl alcohol having <=2,000 average polymerization degree and 69-90 mol.% saponification degree, (C) 1-60 wt.% high boiling point solvent (e.g. ditridecyl phthalate), (D) water, and optionally (E) a thickener, an antifoamer, an antifreezing agent, a preservative and fungicidal agent, a stabilizer of the herbicidal active ingredient, etc.
|
