The winter-type adults of P. edulis wintered in the cracks in the stems of pear trees, and a few of them survived in weeds, leaves, and soil.
Irrigation: When the temperature falls below the freezing point, the implementation of irrigation in the garden can drown the winter pears in the soil.
Chemical control: The key period of chemical control is the winter period from the adult to the spawning period, from late February to mid-March. The commonly used agents are 2% avermectin emulsion 3000 times, 25% acryl water dispersible tablets. 3000 times liquid, 2.5% lambda-cyhalothrin 1500 times and so on.
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