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Chinese Journal of Biological Control ›› 2023, Vol. 39 ›› Issue (6): 1351-1360.DOI: 10.16409/j.cnki.2095-039x.2023.01.010

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Optimization Trapping Technology for Controlling Odontothrips loti (Haliday) (Thysanoptera, Thripidae) in Alfalfa Field

QIAO Lang1,2, ZHANG Zhiqiang3, BAN Liping4, NI Peng5, HAN Haibin1, TAN Yao2   

  1. 1. Institute of Grassland Research of Chinese Academy of Agricultural Science, Hohhot 010010, China;
    2. Research Center for Grassland Entomology, Inner Mongolia Agricultural University, Hohhot 010010, China;
    3. Technology Engineering Center of Drought and Cold-resistant Grass Breeding in North of the National Forestry and Grassland Administration/Institute of Grassland and Resources Environment, Inner Mongolia Agricultural University, Hohhot 010010, China;
    4. College of Grass Science and Technology, China Agricultural University, Beijing 100193, China;
    5. M-Grass Ecology and Environment (Group) Co., Ltd., Hohhot 011500, China
  • Received:2022-11-02 Online:2023-12-08 Published:2023-12-20

Abstract: The efficiency of sticky traps for trapping Odontothrips loti (Haliday) in alfalfa fields was investigated with respect to color, hanging height, location in fields, and daily timing in 2021 and 2022. The results showed that the white sticky board trapped the most O. loti, with trap catches of 293.1 and 219.0 insects/board in 2021 and 2022, respectively, and a minimal impact on natural enemies as indicated by the beneficial to pest ratio of 0.05 in the catch. The white boards hanged at 50 cm high trapped significantly more O. loti than those at 20 cm. The sticky boards set at the edge of the alfalfa fields showed higher efficiency than those at the central section. The number of O. loti trapped at dusk was more than that in other times. Annually, trap catches of O. loti peaked from the end of June to the middle of July when Medicago sativa was in the second growth period, averaging 454.6 insects/board; when the damage peaked around July 13, the average trap catches were 623.5 insects/board. When the crop was in the budding stage inf each season, O. loti caused the highest damage. The trapping using color boards offers a green control system of O. loti.

Key words: Odontothrips loti, colored sticky boards, Medicago sativa, trapping effects, green management

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