奈良県におけるキクに寄生するナミハダニ黄緑型の薬剤感受性

抄録

Toxicities of insecticides for adult females of Tetranychus urticae Koch collected from five chrysanthemum fields in Nara Prefecture were investigated. The corrected mortality rates of bifenazate were 100% in all populations. The rates of acequinocyl and abamectin were higher than 80% in three and four populations, respectively. No significant decrease of susceptibility was found. The rates of milbemectin and emamectin benzoate were lower than 50% in one or two fields, respectively. The rates of cyenopyrafen, pyflubumide-fenpyroxymate, spinetoram were lower than 28.4% in all fields.