COATED GRANULAR SUBSTANCE APPLIED TO RICE-SEEDLING RAISING BOX

摘要

PROBLEM TO BE SOLVED: To provide a coated granular substance applied to a rice-seedling raising box which does not cause chemical poisoning to a seedling and is medicinal sufficiently after transplanting to a rice field even though the coated granular substance is treated to a seedling raising box during a rice-seedling raising period from seeding time to transplanting time.;SOLUTION: In the coated granular substance applied to the rice-seedling raising box, the surface of a granular composition using an agricultural-chemical active component, a lignin sulfonic acid salt, Glauber's salt anhydride and a solid carrier is coated with a liquid made by mixing a water-based synthetic resin emulsion and polyvinyl alcohol aqueous solution. The coated granular substance has an excellent effluent control effect that a point of inflection is obtained in a chemical effluent property brought from the coated granular substance by the multiplier effect of two functions. One function is that the coated-film moisture permeability is increased by the fact that polyvinyl alcohol in the coated film is gradually dissolved and the other function is that the Glauber's salt anhydride and the lignin sulfonic acid salt promote decay of the granular composition by the water of gradually passing through the coated film.;COPYRIGHT: (C)2011,JPO&INPIT