Koppenhöfer Albrecht M, Fuzy Eugene M
Department of Entomology, Rutgers University, New Brunswick, NJ 08901, USA.
J Econ Entomol. 2003 Aug;96(4):1076-82.
The efficacy of chemical and biological control agents against larvae of the Asiatic garden beetle, Maladera castanea (Arrow), in turfgrass under laboratory, greenhouse, and field conditions were determined. In field trials where insecticides were applied preventively against eggs and young larvae, the molt-accelerating compound halofenozide and the neonicotinoids imidacloprid and thiamethoxam were ineffective, whereas another neonicotinoid, clothianidin, provided 62-93% control. In greenhouse experiments against third instars in pots, the carbamate insecticide carbaryl was ineffective, whereas the organophosphate trichlorfon provided 71-83% control. In laboratory, greenhouse, and field experiments, the entomopathogenic nematode Heterorhabditis bacteriophora Poinar and Steinernema glaseri Steiner (not tested in the field) were ineffective against third instars, whereas S. scarabaei Stock & Koppenhöfer provided excellent control. In microplot field experiments at a rate of 2.5 x 10(9) infective juveniles per ha, H. bacteriophora provided 12-33% control and S. scarabaei 71-86% control. Combinations of S. scarabaei and imidacloprid did not provide more control of third instars compared with S. scarabaei alone.
在实验室、温室和田间条件下，测定了化学和生物防治剂对草坪草中亚洲丽金龟（Maladera castanea (Arrow)）幼虫的防治效果。在针对卵和幼虫进行预防性施药的田间试验中，蜕皮加速化合物氟虫脲以及新烟碱类杀虫剂吡虫啉和噻虫嗪无效，而另一种新烟碱类杀虫剂噻虫胺的防治效果为62%-93%。在温室试验中，针对花盆中的三龄幼虫，氨基甲酸酯类杀虫剂西维因无效，而有机磷杀虫剂敌百虫的防治效果为71%-83%。在实验室、温室和田间试验中，昆虫病原线虫嗜菌异小杆线虫（Heterorhabditis bacteriophora Poinar）和格拉斯异小杆线虫（Steinernema glaseri Steiner，未进行田间试验）对三龄幼虫无效，而斯氏异小杆线虫（S. scarabaei Stock & Koppenhöfer）的防治效果极佳。在微型小区田间试验中，每公顷施用2.5×10⁹条感染期幼虫时，嗜菌异小杆线虫的防治效果为12%-33%，斯氏异小杆线虫为71%-86%。与单独使用斯氏异小杆线虫相比，斯氏异小杆线虫与吡虫啉的组合对三龄幼虫的防治效果并没有更好。
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