Myzus persicae Management through Combined Use of Beneficial Insects and Thiacloprid in Pepper Seedlings

Insects

Zhenjuan Yin¹  Shuyan Yin²  Xiaoyan Dai³  Yifan Zhai³  Qingcai Lin³  Hao Chen³  Chenghao Shi³  Li Zheng³  Feng Zhang⁴  Jinping Zhang⁴ 

[1] College of Agriculture, Guizhou University, Guiyang 550025, China;College of Plant Protection, Shandong Agricultural University, Tai’an 271000, China;Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan 250100, China;MoA-CABI Joint Laboratory for Bio-Safety, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China;

关键词: Myzus persicae;    integrated pest management;    neonicotinoid insecticides;    Harmonia axyridis;    Aphidoletes aphidimyza;    Bombus terrestris;   

DOI  :  10.3390/insects12090791

来源: DOAJ

【 摘 要 】

Excessive insecticide application has posed a threat to pollinators and has also increased insecticide resistance of Myzus persicae Sulzer. Therefore, it is urgent to develop an economical and effective strategy, especially for greenhouse vegetables. Firstly, we selected a neonicotinoid insecticide that is specifically fatal to M. persicae but relatively safe to predators and bumblebees by laboratory toxicity tests and risk assessments. Then, we tested the effectiveness of the neonicotinoid insecticide under different temperature conditions. According to the LC₅₀ values and the hazard quotients, thiacloprid met the requirements. Greenhouse trails indicated that thiacloprid was quite efficient, while control dropped to 80% without the application of thiacloprid. As for biological control, Harmonia axyridis effectively controlled 90% of aphids with thiacloprid or not. However, Aphidoletes aphidimyza performed better above 20 °C. Our results indicated that it is cost-effective to control M. persicae with A. aphidimyza in suitable temperature conditions and H. axyridis was more effective at low temperatures. Practically, thiacloprid could be used either as an emergency option to control aphids’ abundance alone or in combination with natural enemies.

【 授权许可】

Unknown