Latest Cover

Online Office

Contact Us

Issue:ISSN 2095-1353
           CN 11-6020/Q
Director:Chinese Academy of Sciences
Sponsored by:Chinese Society of Entomological;institute of zoology, chinese academy of sciences;
Address:Chaoyang District No. 1 Beichen West Road, No. 5 hospital,Beijing City,100101, China
Tel:+86-10-64807137
Fax:+86-10-64807137
Email:entom@ioz.ac.cn
Your Position :Home->Past Journals Catalog->2018年55 No.4

Comparison of the effectiveness of applying different pesticides to foliar spraying and soil-drench to control Diaphorina citri Kuwayama
Author of the article:CHENG Xiao-Qin; ZHAO Zheng;XIA Chang-Xiu;YAN Xiang;ZHANG Ri-Hua; ZHANG Hong-Yu
Author's Workplace:Institute of Urban and Horticultural Pests, China-Australia Joint Centre Research for Horticultural and Urban Pests, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Ganzhou Institute of Citrus Science, Ganzhou 341000, China; Department of Plant Protection Development, Syngenta (China) Investment Co., LTD, Haikou 570125, China
Key Words: Diaphorina citri Kuwayama, toxicity test, foliar spraying, soil-drench, chemical control
Abstract:

[Objectives]  To identify pesticides that are effective against Diaphorina citri Kuwayama but that have low environmental toxicity, and provide a theoretical basis for the comprehensive prevention and control of citrus Huanglongbing (HLB). [Methods]  The toxicity and effectiveness of 12 pesticides was evaluated using the indoor membrane method and field bioassays. The effectiveness of low-toxicity pesticides suitable for spraying on foliage and applying to soil was assessed and optimal concentrations determined. [Results]  Of the 12 pesticides tested for indoor virulence, 48% Clothianidin, 45% Chlorpyrifos, 10% Cyantraniliprole and 20% Dinotefuran were the most virulent to adult D. citri with LC50 of 1.42, 1.48, 1.49, 1.60 mg/L, respectively. The results of field leaf spraying tests showed that applying 20% Dinotefuran and 10% Cyantraniliprole was c. 90% effective after 7 days with a comprehensive effect better than that of the other 10 pesticides. The results of soil-drench tests indicated a cumulative reduction rate of 30%. Thiamethoxam was 100% effective after 7 days, significantly higher than the other four pesticides tested. The efficacy of applying 30% Thiamethoxam to soil at concentrations of 100 mg/L and 150 mg/L reached 60% after 30 days, and 100% after 7 days. [Conclusion]  20% Dinotefuran at 150 mg/mLor 10% Cyantranil at 100 mg/mL were the most effective pesticides and dosages sprayed on foliage, whereas 30% Thiamethoxam at 100 mg/mL was the most effective pesticide applied to soil.

CopyRight©2024 Chinese Journal of Aplied Entomology