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How to determine the main basis of the pesticide application period: the pesticide should pay attention to the safety interval of pesticides , and stop using pesticides within a certain time interval before the crops are received. During the period of use of pesticides, it is necessary to control the period of pests and the stage of pests that are beneficial to the insecticides; the growth period of pests and diseases that are susceptible to infection and the sensitive period of non-natural enemies.
The prevention and treatment of diseases should be effectively controlled according to the period of its disease. The timely use of pesticides is an important way to effectively control the occurrence of pests and diseases, protect beneficial organisms, and avoid pesticide residues .