Control Effect of Different Insecticides on Empoasca pirisuga Matumura
In order to screen the chemical agents that prevent Empoasca pirisuga Matumura,and achieve the purpose of the insecticidal degra-dation,by spraying method in 2023,10 commonly used pharmaceuticals in Shucha Town,Shucheng County were selected to carry out field effi-cacy tests on Empoasca pirisuga Matumura.The results showed that all the tested insecticides had a certain prevention effect on the Empoasca pirisuga Matumura,of which 25%dinotefuran·tolfenpyrad SC(450 mL/hm2)was optimum,and 7 d after the drug was 92%.43.7%em-amectin benzoate·diafenthiuron SC(600 mL/hm2),5%eucalyptol SLX(1 350 mL/hm2),20%dinotefuran SG(450 g/hm2)wasmore than 83%.The above four insecticides showed better preventive effect on Empoasca pirisuga Matumura,and were relatively safe to tea tree and natu-ral enemy insects.It is recommended to use alternately in production.
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