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Issue:ISSN 2095-1353
           CN 11-6020/Q
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Your Position :Home->Past Journals Catalog->2017年54 No.6

Effectiveness of five insecticides for controlling Carposina niponensis Walsingham (Lepidoptera: Carposinidae) and Grapholitha molesta Busck (Lepidoptera: Tortricidae)
Author of the article:GAO Yue1** ZHANG Peng-Jiu1 ZHAO Jing-Yu1 SHI Gao-Chuan2 LIU Zhong-Fang1 ZHANG Hui1 FAN Ren-Jun1
Author's Workplace:1. Shanxi Key Laboratory of Integrated Pest Management in Agriculture/Institute of Plant Protection, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, China; 2. Institute of Cotton Research, Shanxi Academy of Agricultural Sciences, Yuncheng 044000, China
Key Words:pesticides, Carposina niponensis Walsingham, Grapholitha molesta Busck, control effect
Abstract:

 [Objectives]  To determine the effect of three non-emulsifiable concentrate (EC) formulation insecticides (4% beta-cyprmethrin·emamectin benzoate ME, 20% beta-cyprmethrin·chlorpyrifos CG and 20% chlorantraniliprole SC), and two conventional EC formulation (4.5% beta-cyprmethrin EC, 1.8% abamectin EC), for controlling Carposina niponensis Walsingham and Grapholitha molesta Busck, and to provide a scientific basis for the application of these insecticides. [Methods]  Three concentrations (high, medium and low) of each non-EC formulation were prepared according to the recommended concentration, whereas the two conventional EC formulations were applied only at field-recommended concentrations [Results]  Reductions in C. niponensis abundance achieved by spraying 26.67 mg·kg1 of 4% beta- cyprmethrin·emamectin benzoate ME were 100%, 95.22% and 95.11% after 5, 10 and 15 days, respectively. The reductions in C. niponensis abundance achieved by spraying 4.5% beta-cyprmethrin EC were all > 90% and similar to those achieved using the previous pesticide. Reductions in G. molesta abundance achieved by spraying 4% beta-cyprmethrin·emamectin benzoate ME (40 mg·kg1) were 83.33%, 88.89% and 93.70% after 5, 10 and 15 days, respectively, which was significantly better than those achieved by spraying 4.5% beta-cyprmethrin EC, for which the best result of 78.99% was recorded 15 days after spraying. The reductions in target pest abundance achieved using these two pesticides were significantly higher than those obtained with the other three pesticides tested, including 20% beta-cyprmethrin·chlorpyrifos CG, 20% chlorantraniliprole SC and 1.8% abamectin EC. [Conclusion]  26.67-40 mg·kg1 (1 500-1 000 fold dilution) of 4% beta-cyprmethrin·emamectin benzoate ME is recommended for the control of C. niponensis at the prophase of the first generation and for the control of G. molesta at the prophase of the third generation.

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