Efficacy of entomopathogenic Steinernema and Heterorhabditis nematodes against Holotrichia oblita

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• 作者：Wenxiu Guo ; Xun Yan ; Guoyu Zhao ; Jinghua Chen ; Richou Han
• 关键词：Entomopathogenic nematode ; Steinernema ; Heterorhabditis ; Holotrichia oblita Faldermann ; Peanut
• 刊名：Journal of Pest Science
• 出版年：2015
• 出版时间：June 2015
• 年：2015
• 卷：88
• 期：2
• 页码：359-368
• 全文大小：652 KB
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• 作者单位：Wenxiu Guo (1) (2) (3)
  Xun Yan (2)
  Guoyu Zhao (2)
  Jinghua Chen (2)
  Richou Han (2)
  
  1. South China Botanical Garden, Chinese Academy of Sciences, 723 Xinke Road, Guangzhou, 510650, China
  2. Guangdong Key Laboratory of Integrated Pest Management in Agriculture & Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Guangdong Entomological Institute, 105 Xingang Road West, Guangzhou, 510260, China
  3. University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, China
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Agriculture
  Plant Pathology
  Plant Sciences
  Ecology
  Forestry
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1612-4766

文摘

The white grub Holotrichia oblita Faldermann (Coleoptera: Scarabaeidae) causes serious damage in peanut fields in China. The development of an environmentally friendly control method for this pest is urgently needed. The efficacy of entomopathogenic nematodes against this pest in the laboratory and peanut fields was evaluated in this study. Both Steinernema longicaudum Shen and Wang and Heterorhabditis bacteriophora Poinar (Rhabditida: Steinernematidae and Heterorhabditidae) had promising control efficacy against H. oblita larvae in the laboratory. S. longicaudum X-7 and H. bacteriophora H06 at 1.0?×?104 and 5.0?×?103 IJs per plant caused a similar percentage reduction of the grub larvae and percentage of the injured legumes to chlorpyrifos. The peanut yields from the nematode-treated plots at 5.0?×?103 IJs per plant were at least 55 and 15?% higher than those from the water control and the chlorpyrifos-treated plots. No significant differences were found in the percentage reductions of the grub larvae at different larval stage applications. The peanut yields in plots treated by S. longicaudum X-7 and H. bacteriophora H06 were also not significantly different. The cost-benefit analysis showed that S. longicaudum X-7 and H. bacteriophora H06 are promising agents for H. oblita larvae control in peanut fields. Our findings indicate that entomopathogenic nematodes have good potential for safe management of H. oblita in peanut production.