The control methods of rice planthopper and rice blast, rice granules have gray-brown spots, and how to prevent and control rice planthoppers? The first control of rice planthoppers can be sprayed with chlorpyrifos, chlorpyrifos, imidacloprid, beta-cypermethrin and other agents. Prevention and treatment. There are gray-brown spots on the rice grains, which are rice blast. It is recommended to control after the end of the flowering period. You can choose Fuji, No. 3, Tricyclazole, Indigo and other agents for spray control, and spray 2-3 times continuously. The interval is 7-10 days. To prevent drug resistance, the agents should be used interchangeably. Spraying the drug is best done at around 4 pm.
Website: Prevention and control methods for rice planthopper and rice blast
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