How to control Robinia pseudoacacia seed wheat moth?
The methods to control the wheat moth of Robinia pseudoacacia seeds are as follows: first, remove the remaining pod horn after defoliation and eliminate the overwintering larvae. Second, during the peak period, 50% fenitrothion EC can be sprayed 1000 to 1500 times, or 40% dimethoate EC 800 to 1000 times. Third, protect and utilize natural enemies. Fourth, select the seeds with 20% salt water before sowing, float up and remove the insect seeds and burn them.
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How to control Robinia pseudoacacia seed wasp?
The methods to control the seed wasps of Robinia pseudoacacia are as follows: first, the seed quarantine should be strict, and the outward transportation of seeds with insects is strictly prohibited. Second, strengthen the management of mother trees and find the use of chemicals to control pests. Fumigation with 741 dichlorvos intubation fumigant during adult emergence. Spray with 80% dichlorvos EC 8 to 1000 times, 40% dimethoate EC 1000 to 1500 times, or 20% butyl EC 1500 times. Third, soaking the seeds in hot water (60 degrees Celsius) for 15 minutes can kill the intraspecific larvae, or select the seeds with 10% to 20% salt water.
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How to control locust aphids?
The control methods of Robinia pseudoacacia aphids are as follows: first, protect natural enemies such as ladybugs, aphid flies, lacewings and aphid cocoon wasps. Second, strengthen the pest situation prediction, when it is found that the number of winged aphids has increased suddenly, and the rate of aphids is up to 20% to 30%, it should be sprayed in time, such as when the proportion of ladyaphids reaches 1: 100, the number of aphids has a downward trend, stop spraying control and protect natural enemies. 3. Spray 50% aphid spray wettable powder 1500 times, imidacloprid 10% wettable powder 1500 times, or spray EB-82 to kill aphids 300 times
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