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Chinese Agricultural Science Bulletin ›› 2025, Vol. 41 ›› Issue (13): 152-157.doi: 10.11924/j.issn.1000-6850.casb2024-0462

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Field Control Effect of Different Pesticides and Adjuvants on Tuta absoluta

WANG Shuaiyu1(), WANG Yin1, FU Sirui2, WEI Shujun3, CHEN Jincui3, CAO Jinjuan1, LI Jin4, ZHANG Aihuan2(), LI Lin1()   

  1. 1 Beijing Plant Protection Station, Beijing 100029
    2 College of Bioscience and Resource Environment, Beijing University of Agriculture, Beijing 102206
    3 Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097
    4 Changping Plant Protection and Quarantine Station, Beijing 102299
  • Received:2024-07-15 Revised:2025-01-19 Online:2025-05-05 Published:2025-05-07

Abstract:

There are few studies on the effectiveness of pesticides against tomato leaf miner in China, and it is difficult to select pesticide for emergency control in the field due to the differences of control efficacy of the same pesticide. We compared the effect of 9 different pesticdes, 4 formulations and 2 adjuvants in 19 treatments against tomato leaf miner in the field by plant spraying using the random block method. The results at 1, 3 d after the spraying showed that the control effect of different pesticides was 30% chlorfenapyr-chlorantraniliprole nano-SE> 60 g/L spinetoram SC> 5% broflanilide SC> 10% chlorfenapyr SC> 5% chlorantraniliprole SC> 5% emamectin benzoate ME> 32000 IU/mg Bacillus thuringiensis G033A WP. The control effect of 5% emamectin benzoate ME and 5% emamectin benzoate nano-SE is close,the control effect of 32000 IU/mg B. thuringiensis PS3 WP is close to B. thuringiensis G033A WP. The control effect on tomato leaf miner at 7 d was mostly the same as that at 1, 3 d after spraying pesticides, only the control effect of two pesticides of the same active ingredients of B. thuringiensis at 7 d after the spraying were superior to that of two pesticides of the same active ingredients of emamectin benzoate. The overall control effect of the same agent and adjuvants combination, from high to low, was pesticide+ nonionic alcohol ether adjuvants> pesticide+ lecithin adjuvants> pesticide. Except for B. thuringiensis, 7 d post-dose effect of which was significantly higher than that of 1 d and 3 d after spraying, the 7 d effect of other agents showed a decreasing trend compared with that of 1 d and 3 d. The effect of different treatment of 30% chlorfenapyr-chlorantraniliprole nano-SE was all higher than 89.96%, with the best, rapid and persistent efficacy. The effect of 60 g/L spinetoram SC, 5% broflanilide SC, 10% chlorfenapyr SC was significantly better than that of 5% chlorantraniliprole SC, and the effect of 5% chlorantraniliprole SC was significantly better than that of 32000 IU/mg B. thuringiensis G033A WP, 32000 IU/mg B. thuringiensis PS3 WP and 5% emamectin benzoate nano-SE, 5% emamectin benzoate ME on the tomato leaf miner. 30% chlorfenapyr-chlorantraniliprole nano-SE, 60 g/L spinetoram SC, 5% broflanilide SC, 10% chlorfenapyr SC, 5% chlorantraniliprole SC, 5% emamectin benzoate nano-SE, 5% emamectin benzoate ME, 32000 IU/mg B. thuringiensis G033A WP and 32000 IU/mg B. thuringiensis PS3 WP can be used alternatively for the control of tomato leaf miner, and the addition of adjuvants can significantly improve the control effect of pesticides.

Key words: tomato leaf miner, insecticides, adjuvants, formulations, field control effect, rapid efficacy, persistent efficacy