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There are three specific operations: First, insecticide nets can be used in the autumn nursery; Second, before breeding and before cultivation to completely kill the shed indoor debris, remove weeds and stubble, vents sealed with nylon gauze, control of foreign insects The source enters; the third is in the nymph stage of the silver leaf whitefly 1-2 years of age application control. It is important to note that this insect has shown resistance to fenthion, malathion, parathion, permethrin, etc. Therefore, these types of pesticides should be used interchangeably. In addition, we should try to use the drug according to the recommended concentration. Do not increase the concentration at will, so as to avoid excessive growth of the resistance of the silver leaf mealybug.
Prevention of Silver Leaf Disease in Zucchini
The silver leaf disease of zucchini is caused by the damage of silver leaf whitefly. Once it is diseased, it is difficult to treat. Therefore, the key to prevention and control of this disease is to control the occurrence of silver leaf mealybug.