Journal of Zhejiang Agricultural Sciences ›› 2025, Vol. 66 ›› Issue (4): 992-1000.DOI: 10.16178/j.issn.0528-9017.20240952

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Evaluation of the field control efficacy of five ant bait insecticides against Solenopsis invicta

CHEN Meiyun1(), QIAN Linghan2, GUAN Yun2, ZHANG Songyang2, LI Qu1, HUANG Fengyao2, LIN Xiaojun2, LI Shenlei1,2,*()   

  1. 1. Honghuoyi Technology Co., Ltd., Guangzhou 510530, Guangdong
    2. Guangzhou Ruifeng Biotechnology Co., Ltd., Guangzhou 510530, Guangdong
  • Received:2024-12-16 Online:2025-04-11 Published:2025-05-09
  • Contact: LI Shenlei

Abstract:

To explore the differences in the control efficacy of compound bait agents and single-agent bait agents on Solenopsis invicta and screen out the compound bait agents suitable for the control of Solenopsis invicta. In this experiment, the long-term dynamic monitoring research method was adopted to measure the field control efficacy of 2 kinds of compound bait agents and 3 kinds of single bait agents. The differences in the control efficacy of the 2 kinds of compound bait agents and their corresponding single-agent bait agents on Solenopsis invicta within 49 days were studied, as well as the comparison of the persistence of the efficacy among the 5 ant bait agents. The experimental results showed that the bait agent containing 0.1% indoxacarb had the best control effect on Solenopsis invicta, with a comprehensive control effect of 84.29%; followed by the two compound bait agents (the bait agent containing 0.8% hydramethylnon-indoxacarb and the bait agent containing 0.5% hydramethylnon-spinosad)effect, whose comprehensive control efficacy were 81.81% and 78.67%, respectively. The comprehensive control of the bait agent containing 0.015% spinosad was 77.01%, and that of the bait agent containing 1% hydramethylnon was 76.77%. The control effect of the bait agent containing 0.8% hydramethylnon-indoxacarb was second only to that of the bait agent containing 0.1% indoxacarb, but it had the best persistence of efficacy. Although the control effect of the bait agent containing 0.5% hydramethylnon-spinosad was not as good as that of the bait agent containing 0.8% hydramethylnon-indoxacarb, its control intensity and persistence of efficacy were stronger than those of the two corresponding single bait agents. It can be seen that the bait agent containing 0.8% hydramethylnon-indoxacarb and the bait agent containing 0.5% hydramethylnon-spinosad have good field control efficacy on Solenopsis invicta, and their control efficacy are not worse than those of single bait agents, which can be used as candidate drugs for scientific drug selection and drug replacement in the prevention and control of Solenopsis invicta.

Key words: Solenopsis invicta, compound bait agents, single bait agents, ant nest, worker ant, field control efficacy

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