Laboratory bioassay of six pesticides, an entomopathogenic fungus, and a botanical pesticide on two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae)

IF 0.7 Q4 ENTOMOLOGY
Rumpa Basak, M. Akter, Toufica Ahmed Tumpa, D. Sharmin, M. S. Ullah
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引用次数: 2

Abstract

The two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae) is a serious pest that infests different agricultural crops in Bangladesh. The application of different types of pesticides (botanical and chemical) with various modes of action and bio-pesticides was used for the first time to develop sustainable pest control strategies against spider mites. In this study, the effects of six chemical insecticides viz. abamectin, bifenthrin, bifenazate, etoxazole, hexythiazox, and spinosad, and entomopathogenic fungus Beauveria bassiana and botanical neem oil were evaluated against adult and egg stages of T. urticae under laboratory conditions. Treated mites were kept in controlled conditions at 25 ± 1 ℃, 60–70% RH and a photoperiod of 16:8 h (L: D). The LC50 values of all chemicals [for adults, abamectin (0.51 ml/L), bifenthrin (3.26 ml/L), bifenazate (3.82 ml/L), hexythiazox (3.27 ml/L) and spinosad (3.83 ml/L); for eggs, abamectin (0.56 ml/L), bifenthrin (3.48 ml/L), bifenazate (26.81 ml/L), hexythiazox (4.18 ml/L) and spinosad (18.28 ml/L)] suggest that they were effective against eggs and adult females of the T. urticae. Etoxazole (LC50 = 3.99 ml/L) is recommended against egg stage. The neem oil was found to be moderately effective (for adult, LC50 = 1.26%; for egg, LC50 = 1.77%) against eggs and adult females of T. urticae. The B. bassiana was also found to be effective against eggs and adult females of T. urticae. Finally, it could be concluded that all chemicals used in this study are effective for the management of two spotted spider mite but the entomopathogenic fungus B. bassiana and botanical neem oil were promising alternatives for successful management of T. urticae in IPM programs.
6种农药、1种昆虫病原真菌和1种植物性农药对荨麻疹叶螨(螨亚纲:叶螨科)的室内生物测定
双斑蜘蛛螨,荨麻疹叶螨科(螨目:叶螨科)是一种严重的害虫,危害孟加拉国的不同农作物。首次采用植物性和化学性不同作用模式的农药和生物农药,制定了可持续的蜘蛛螨防治策略。在实验室条件下,研究了阿维菌素、联苯菊酯、联苯菊酯、乙恶唑、己噻唑、spinosad等6种化学杀虫剂,以及球孢白僵菌和印楝油对荨麻疹成虫和虫卵的防治效果。在25±1℃、60-70%相对湿度、16:8 h (L: D)的控制条件下,对处理后的螨类,成虫的LC50值为:阿维菌素(0.51 ml/L)、联苯菊酯(3.26 ml/L)、联苯菊酯(3.82 ml/L)、己噻唑(3.27 ml/L)、spinosad (3.83 ml/L);卵用阿维菌素(0.56 ml/L)、联苯菊酯(3.48 ml/L)、联苯菊酯(26.81 ml/L)、己噻唑(4.18 ml/L)、spinosad (18.28 ml/L)对荨麻疹卵和成虫均有较好的杀灭效果。卵期推荐使用乙toxazole (LC50 = 3.99 ml/L)。印楝油对成人有中等效果(LC50 = 1.26%;卵,LC50 = 1.77%)。球孢白僵菌对荨麻疹白僵菌的卵和雌成虫也有一定的杀灭效果。最后得出结论,本研究中使用的所有化学制剂对两种斑螨的管理都有效,但昆虫病原真菌球孢白僵菌和植物性印楝油是IPM计划中成功管理荨麻疹的有希望的替代品。
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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来源期刊
Persian Journal of Acarology
Persian Journal of Acarology Agricultural and Biological Sciences-Insect Science
CiteScore
1.60
自引率
30.80%
发文量
0
审稿时长
20 weeks
期刊介绍: Persian Journal of Acarology (PJA) is a peer-reviewed international journal of the Acarological Society of Iran for publication of high quality papers on any aspect of Acarology including mite and tick behavior, biochemistry, biology, control, ecology, evolution, morphology, physiology, systematics and taxonomy. All manuscripts will be subjected to peer review before acceptance.
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