leaf worm
1.Especially to the treatments of Bt on the undersurface of Chinese kale leaf,glyphosate on the surface of crabgrass leaf,and fenvalerate on the body surface of cabbage worm,the contact angles of pesticide solutions were above 106°,but they decreased to 78° below when 1 000 ～ 4 000 mg/L tea saponin was added. It had very important instructional significance in practice.
2.Influences of tea saponin on the contact angle of 6 pesticide(glyphosate,dimephypo,dimethoate,torque,Bt and fenvalerate)solutions on the leaf surface of 5 plant(crabgrass,rice,Chinese cabbage,citrus,and Chinese kale)and the body surface of 2 insect pests(diamondback moth and imported cabbage worm)were determined.
3.The insect pests and diseases of persimmon and their harmfulness in Shaanxi province were investigated from 2002 to 2003, the determined major control targets included persimmon fruit worm, persimmon mealy bug, elongate cottony scale, anthracnose, persimmon cercospora leaf spot and persimmon cicular leaf spot.
