Efficacy of entomopathogenic nematodes for the control of white grub, Anomala corpulenta Motschulsky, in laboratory and field

文献类型： 外文期刊

第一作者： Guo, Wenxiu

作者： Guo, Wenxiu;Zhou, Xianhong;Zhai, Yifan;Men, Xingyuan;Yu, Yi;Zhao, Guoyu;Wang, Congli

作者机构：

关键词： China; control; Heterorhabditis bacteriophora; Heterorhabditis indica; peanut; scarab beetle; Steinernema carpocapsae; Steinernema feltiae; Steinernema glaseri; Steinernema longicaudum

期刊名称：NEMATOLOGY （ 影响因子：1.442； 五年影响因子：1.485 ）

ISSN： 1388-5545

年卷期： 2020 年 22 卷 10 期

页码：

收录情况： SCI

摘要： Anomala corpulenta is one of the major white grubs that cause serious damages in peanut production. To develop an environmentally friendly method to control A. corpulenta larvae, the efficacy of species of entomopathogenic nematodes (EPN), application rate and larval stage against A. corpulenta were determined. Results showed that Steinernema longicaudum X-7 and S. glaseri B-4-1 were the most virulent species, which caused 77.8 and 84.4% corrected mortalities of the 2nd instar larvae at 25 degrees C 14 days after treatments. Corrected mortalities of A. corpulenta caused by EPN were significantly affected by EPN application rate. A decrease but no significant difference in susceptibility from the 2nd to the 3rd instar was observed for the test EPN species S. longicaudum, S. glaseri and Heterorhabditis bacteriophora. The field experiments indicated that S. longicaudum and S. glaseri applied at a relatively high rate (>= 5.0 x 10(3) infective juveniles (IJ) plant(-1), i.e., 7.5 x 10(8) IJ ha(-1)) were able to provide not only control efficacy against A. corpulenta with >= 92.7% reduction of larvae and <= 5.06% of damaged pods, and the peanut yield increase was as good as phoxim, but also gave better control persistency compared to phoxim. Our findings indicated that EPN could be an effective strategy for the management of A. corpulenta in peanut fields.

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