Study on Control Effect of Longge on the Larvae of Chilo suppressalis Walker and Cnaphalocrocis medinalis Guenée

Chilo suppressalis Walker and Cnaphalocrocis medinalis Guenee are the most important insect pests on rice in Southern China.Control effect of 20% Flubendiamide WDG(Longge)and several kinds of insecticides on the larvae of Chilo suppressalis Walker and Cnaphalocrocis medinalis Guenee were studied in the paddy field.The results showed that efficacy of dosage150 g/hm2 of 20% Flubendiamide WDG against Chilo suppressalis Walker and Cnaphalocrocis medinalis Guenee was 86.3% and 92.2% respectively at 3 days after spray.The control effects were 83.1% and 93.8%,respectively at 14 days after spray,which were higher than other insecticides.