Coated granular pesticide, methods for producing the same...

Details Coated granular pesticide, methods for producing the same... Coated granular pesticide, methods for producing the same...

A - Human Necessities

01

N

A01N 25/26 (2006.01) A01N 25/12 (2006.01) A01N 25/30 (2006.01) A01N 43/70 (2006.01) A01N 43/78 (2006.01) A01N 43/90 (2006.01) A01N 47/14 (2006.01) A01N 51/00 (2006.01)

Patent

CA 2227536

Coated agricultural pesticide granules comprising agricultural pesticide granules composed of at least one sparingly water-soluble agricultural pesticide active ingredient and at least one water-swelling material, the surface of each agricultural pesticide granule being covered with a coating composed mainly of a thermoplastic resin. The granules permit the sparingly water-soluble active ingredient to be dissolved out of the coated granules by virtue of the function of the thermoplastic resin as the coating component and the water-swelling material as the core component. Since the sparingly water- soluble active ingredient is gradually dissolved a certain period of time after the application of the coated agricultural pesticide granules, any desired efficacy can be provided depending upon crops. In use, for example, the coated agricultural pesticide granules can be applied directly on the soil or mixed with the soil, preferably with a seedling supporting material having a water-retentive property and then used as a molding for growing the seedling.

L'invention porte sur des granulés pesticides agricoles enrobés constitués de granulés pesticides agricoles contenant au moins un pesticide agricole modérément hydrosoluble comme ingrédient actif et au moins une substance gonflant à l'eau, la surface de tous ces granulés étant recouverte d'une enrobage essentiellement constitué d'une résine thermoplastique. L'ingrédient actif modérément hydrosoluble de ces granulés est capable de se dissoudre en raison des propriétés de la résine thermoplastique comme constituant d'enrobage et de celles de la substance gonflant à l'eau comme composant de noyau. Comme cet ingrédient actif modérément hydrosoluble se dissout progressivement quelque temps après que les granulés pesticides agricoles enrobés ont été répandus, toute l'efficacité escomptée est fonction des types de culture. Il est, par exemple, possible de répandre directement sur le sol ces granulés pesticides agricoles enrobés ou de les y mélanger, de préférence, à l'aide d'un matériau pour semis, doté de pouvoirs de rétention d'eau et donc utilisé comme matrice pour la croissance du semis.

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