To provide a granule agrochemical capable of inhibiting the releasing of it over a fixed period of time and allowing its release after a specified period and controling the releasing period after applied to a farm field.
This agrochemical uses a coated agrochemical granule coated with a composition consisting of an active ingredient of agrochemical and a thermoplastic resin on the surface of a granular support mainly composed of a mineral material, on the surface of the granules are formed two layers comprising a release deriving coating and release controlling coating by utilizing coating materials mainly composed of a resin, allowing the coating the control the releasing of the agrochemical active ingredient by their interaction. This allows the agrochemical able to control the time limited release, difficult in the past, in high accuracy and able to control the duration of medicinal virtues.
ASHIHARA MICHIYUKI