| 摘要 |
Water-dispersible, extruded granules for delivering agricultural chemicals, such as pesticides or non-pesticidal materials, to a crop. The granules are extrusion-formed from a blended composition including at least one active chemical ingredient, a solid carrier, and a binder. The active chemical ingredient may or may not be micro-encapsulated. The binder may be added directly to the composition or applied as a coating to the granules after the extrusion process. The binder reduces attrition, chemical volatility, and phytotoxicity. The granules are applied to a crop field by aerial means. The dense granules display good vertical drop characteristics, with little drift. If the crop field has standing water, the water-dispersible granules sink and break up, effecting dispersion of the chemical ingredient. When applied to a dry field, the subsequent exposure to water to the granules effects the same dispersal of chemical ingredient.
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