Efficiency of the mixed biocide GCSC-BtA against vegetable pests of different arthropod orders in the south-eastern China†

Anzeiger für Sch?dlingskunde Pub Date : 2003-12-15 DOI:10.1111/j.1493-0280.2001.01012.x

C. Sengonca, B. Liu, Y. J. Zhu

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Abstract

The present paper deals with the efficiency of the mixed biocide GCSC-BtA against vegetable pests of five orders of arthropod insects in the south-eastern China, i. e., diamondback moth, Plutella xylostella (L.); green peach aphid, Myzus persicae (Sulzer); yellow-fanded flea beetle, Phyllotreta vittata Fabricius; vegetable leaf miner, Phytomyza nigricornis Macquart; and vegetable spider mite, Tetranychus neocaledonicus Andre. The results show that the mixed biocide GCSC-BtA has a higher efficacy of control against all of the five pests than the commercial biocide B.t. and insecticide Diazinon. GCSC-BtA gave a higher mortality value of 92.18 % against P. xylostella as compared to the biocide B.t. with a value of 64.70 % and Diazinon with a value of 50.00 %. Similar mortalities were obtained with the other four pests regarding the efficacy of the three products tested against them.

The concentration-mortality regression equations were calculated by the probit analysis, from which the average mortalities were calculated. The values calculated for GCSC-BtA were 81.13 % for P. xylostella, 75 % for M. persicae and T. neocaledonicus, 69.23 % for P. vittata, and 61.03 % for P. nigricornis as compared to those caused by Diazinon: 33.33 %, 27.42 %, 66.31 %, 44.54 %, 19.65 % for P. xylostella, M. persicae, P. vittata, P. nigricornis, and T. neocaledonicus, respectively. Based on LC₅₀, P. xylostella was most susceptible to GCSC-BtA with a LC₅₀ value of 0.3445, followed by B.t. with a value of 0.8404 and Diazinon with a value of 1.3160. The LC₅₀ value of GCSC-BtA for M. persicae was 0.4660 which was about three times less than that of Diazinon. LC₅₀ value of GCSC-BtA for P. vittata was 0.3954 which was about the same as that of Diazinon. P. nigricornis and T. neocaledonicus were also much more susceptible to GCSC-BtA than to B.t. and Diazinon. It is concluded that GCSC-BtA kills more target pests than B.t. and is more effective than Diazinon in controlling the vegetable pests.

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混合杀生物剂GCSC BtA对中国东南部不同节肢动物目蔬菜害虫的有效性†

本文研究了混合杀菌剂GCSC-BtA对我国东南地区5目节肢动物害虫的杀灭效果。小菜蛾、小菜蛾；桃蚜；黄色扇形跳蚤甲虫Phyllotreta vittata Fabricius；蔬菜潜叶蝇Phytomyza nigricornis Macquart；和蔬菜蜘蛛螨，新冠叶螨。结果表明，混合杀生物剂GCSC BtA对所有五种害虫的防治效果均高于商业杀生物剂B.t.和杀虫剂Diazinon。GCSC BtA的死亡率较高，为92.18 % 与杀生物剂B.t.相比，对小菜蛾的抗性为64.70 % 和值为50.00的二嗪农 %. 在测试的三种产品对其他四种害虫的疗效方面，也获得了类似的死亡率。通过概率分析计算浓度-死亡率回归方程，由此计算平均死亡率。GCSC BtA的计算值为81.13 % 小菜蛾，75 % 对于M.persicae和T.neocaledonicus，69.23 % 对于P.vittata，和61.03 % 与二嗪农引起的黑皮病相比：33.33 %, 27.42 %, 66.31 %, 44.54 %, 19.65 % 分别为小菜蛾、桃蚜、维特塔蚜、黑灰蝶和新灰蝶。基于LC50，小菜蛾最易受到GCSC BtA的影响，LC50值为0.3445，其次是B.t.，其值为0.8404，二嗪农的值为1.3160。GCSC BtA对桃蚜的LC50值为0.4660，约为二嗪农的三倍。黄颡鱼GCSC BtA的LC50值为0.3954，与二嗪农相近。与B.T.和Diazinon相比，P.nigricornis和T.negataledonicus对GCSC BtA也更敏感。结果表明，GCSC BtA比B.t.能杀死更多的目标害虫，并且在控制蔬菜害虫方面比双嘧磺隆更有效。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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