Canning the core material which contains the controlled release conversion agricultural chemical formulation and the paddy rice disease valve core

摘要

PROBLEM TO BE SOLVED: To provide a method for controlling major insect pests through a paddy rice culturing period by single agent treatment before rice-planting in order to reduce labor of farmers and the releasing amounts of chemical substances to the environment.;SOLUTION: The method for controlling the paddy rice insect pests which appear from the initial stage of paddy field to heading comprises using a sustained release covered preparation obtained by covering a core material containing an agrochemically active ingredient with a water-insoluble or a slightly soluble film in order to carry out paddy rice seedling culturing soil-kneading treatment, treatment carried out when sown and nursery box treatment between periods from a seedling period to rice planting.;COPYRIGHT: (C)2004,JPO