Abstract：Abstract: In order to effectively control Plutella xylostella in Yinchuan area, the indoor toxicities of 14 in-secticides were determined by impregnation method, and 5 of them were screened out for field efficacy evalua-tion. The results showed that emamectin benzoate 5% EC had the highest toxicity to P. xylostella, and tebufenozide 20% SC had the lowest toxicity. Their LC50 values were 1.53 mg/L and 1 693.72 mg/L at 48 h, respectively. The 14 pesticides with their toxicities from high to low, in order, were emamectin benzoate, chlorfenapyr, abamectin, cyantraniliprole, Bacillus thuringiensis, tetrachlorantraniliprol, pyridalyl, gamma-cyhalothrin, chlorantraniliprole, tolfenpyrad, indoxacarb, spinetoram, chlorfluazuron, and tebufenozide. The results of field control effect test showed that, among them, 5 pesticides reached the highest control effect 3 days after application, and pyridalyl 10.5% EC had the longest duration and the best comprehensive control effect in the field test. When the field control effects of pesticides and their dosages are synthetically conside-red, it is recommended that pyridalyl 10.5% EC would be widely used, with a recommended dose of 900 mL/hm2, to control diamondback moth in local broccoli fields.
引用本文:
田晓曦, 赵斌荣, 景亮亮, 柴军发, 张红艳, 贾彦霞, 洪 波. 14种杀虫剂对西兰花小菜蛾的室内毒力测定及田间防效[J]. 生命科学研究, 2021, 25(6): 526-531. TIAN Xiao-xi, ZHAO Bin-rong, JING Liang-liang, CHAI Jun-fa, ZHANG Hong-yan, JIA Yan-xia, HONG Bo. Toxicity Measurement and Field Control Effects of Fourteen Pesticides on Plutella xylostella. Life Science Research, 2021, 25(6): 526-531.
