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What are the common pests and diseases of pear trees? Targeted medication and control methods
What are the common pests and diseases of pear trees? What pesticides should be used to control them effectively? Please introduce the following common pests and diseases of pear trees and their control methods (for reference): Pear ring rot and pear branch and trunk rot: apply medication 10 days after the pear tree finishes flowering. For pear ring rot, you can choose 21% Guofukang 800-1000 times solution or 68.5% DuPont Yibao 80...