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Monitoring of Insecticides Resistance of Spodoptera exigua in Fujian Province, China
Lan Yiquam Zhao Shi Wu Gang
2005, 26 (4):
90-93.
Spodoptera exigua populations were collced from Jianxin of Fuzhou,Shangie of Minlou,Jan,ou of Nanping,Tong,an of Xiamen,Huangshi of Putian and Longhaiof Zhangzhou(Fujian Province).The resistances of Spodoptera exigua to six insecticides were tested by topical aplication.The esults showed that comparedwith the susceptible populations,the resistances of 4th-instar larvae of six field populations were founded respectively to be 438.5,389.7,312.4,423.7,286.5 and317.7folds to fenvalerate;1015.4,951.5,702.2,850.4,768.6and 687.6 folds to alpha-cypermethrin;53.3,49.1,67.4,74.2,58.1 and 77.8foldsto phoxim;203.8,212.7,135.5, 162.4,208.4 and 362.4 folds to methomyl;48.7,29.4,40.1,42.5,27.5and 35.8 folds to tebufenozide;23.5, 19.4,29.7,12.8,14.5 and 13.2 folds to endosulfan.There was not significant difference in the toxicity of the three uncommonly used insecticides(emamectin,chlorfenapyr and chlrfluazuron)to the six populations.
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