Management of Resistant Diamondback Moth and Other Crucifer Pests in Taiwan

Abstract

Resistant diamondback moth (Plutella xylostella, DBM) was managed by insecticide alternation of organophosphorus insecticides, Bacillus thuringiensis (B.t.) and cartap to avoid cross resistance. The rationale of insecticide selection was discussed in detail.十字花科蔬菜重要害蟲，小菜蛾(Plutella xylostella L.)，因抗藥性問題而難以防治，經究明其抗藥性及藥劑間之交互抗性關係，確定應該避免使用易為多功能氧化酵素(MFO)分解之對象藥劑如氨基甲酸鹽、合成除蟲菊精及昆蟲生長調節劑等，而採用培丹、蘇力菌及抗性不穩定之有機磷類，如美文松、亞特松及滅大松，輪流使用，即可達到防治並消除抗性干擾之目的。