摘要 |
PROBLEM TO BE SOLVED: To obtain a herbicide for rice paddies which is improved in disintegration, spreadability and dispersibility in water by combining a herbicide that is solid and slightly soluble in water with a specific disintegration aid, a specific surfactant and a solid carrier. SOLUTION: This granular herbicide contains a herbicide component which is slightly soluble in water and is solid, a polyacrylic acid salt as a disintegration aid, an anionic surfactant ofα-olefinsulfonate salt as a dispersion aid and a solid carrier. The polyacrylic acid salt is a sodium or potassium salt of polyacrylic acid with an average molecular weight of 4,000-10,000 and is used in an amount of about 0.5-5wt.%. Theα-olefin sulfonate salt is sodium, potassium or ammonium salt of anα-olefin of 14-18 carbon atoms and is used in an amount of 0.1-5wt.%. The component of the herbicide is preferably pyrazolate or caffenstrol. Together this herbicide, a sulf'onylurea herbicide such as bensulfuron-methyl may be used.
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