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Chinese Journal of Biological Control ›› 2021, Vol. 37 ›› Issue (5): 946-955.DOI: 10.16409/j.cnki.2095-039x.2021.03.010

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Control of Locusts in Different Grasslands by Metarhizium anisopliae

XU Chaomin1, WANG Jiating2, LI Shuang1, MA Chongyong3, SHAN Yanmin3, JI Yanhua3, Wei Jun4, TU Xiongbing1, ZHANG Zehua1   

  1. 1. State Key Laboratory for Biology of Plant Diseases and Insect Pests/Institution of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
    2. National Animal Husbandry Station, Beijing 100125, China;
    3. Inner Mongolia Autonomous Region Grassland Workstation, Hohhot 010020, China;
    4. Hulunbuir Grassland Workstation, Inner Mongolia Autonomous Region, Hulunbuir 021410, China
  • Received:2020-09-24 Online:2021-10-08 Published:2021-10-28

Abstract: Metarhizium anisopliae is an important insecticidal fungus that has high virulence and pathogenicity to target insects. Metarhizium infects and kills grasshopper through spores and hypha contact infection, which is significant to grasshopper management. The control of grasshoppers in different types of grasslands was investigated by spraying M. anisopliae powder. The results showed that M. anisopliae had a high control effect on locusts. The population of dominant species of locusts including Dasyhippus barbipes,Oedaleus decorus asiaticus and Myrmeleotettix palpalis declined nearly 60% and the control efficacy exceeded 62% at 7 days post spray. The effects were more pronounced in Bryodema luctuosum,D. barbipes, O. decorus asiaticus and M. palpalis than in Pararcyptera microptera meridionalis and Bryodemella tuberculatum dilutum. However, the control differed between grassland types, being higher in the typical grassland, desertification grassland and semi-desertification grassland than in the meadow grassland. The results will provide support for the establishment of green sustainable control system for the grassland grasshoppers.

Key words: Metarhizium, grasshopper, control effect, decline rate

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