Evaluation of Some Plant Origin Commercial Biopesticides against Red Spider Mite, Oligonychus coffeae Nietner (Acarina: Tetranychydae) in Tea

茶叶科学 Pub Date : 2015-11-29 DOI:10.5376/JTSR.2015.05.0008

Mamun M.S.A., M. M. Hoque, M. Ahmed

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引用次数: 7

Abstract

An experiment was conducted to evaluate some plant origin commercial biopesticides against red spider mite in tea under both in the Entomology Laboratory and main farm of Bangladesh Tea Research Institute (BTRI), Srimangal, Moulvibazar during the period from March 2013 to December 2014. Bio-Cawach ( Pongamia pinnata ), Karanza ( Azadirachta indica + Pongamia pinnata ), Miticon (Various herbs, alkaloids and salt of fatty acids), Neemakar (Neem, Karanja & Tulsi), Rescue ( Vitex negundu + Clerodendron infortunatum ) and Torpedo ( Sophora alopecuroides + Stemona sessilifolia ) were considered as treatments and dosages were @ 0.8 ml, 1.0 ml, 1.0 ml, 1.0 ml, 0.5 ml and 0.5 ml, respectively. Data were collected at 24 HAT, 48HAT, 72HAT (Hours after Treatment) in the laboratory and at weekly interval in field condition. Results indicated that all the biopesticides showed the toxic effect on red spider mite in tea and significantly reduced mite population both in laboratory and field conditions. In laboratory condition, Miticon showed the highest (93.28%) toxic effect at 72HAT followed by Karanza (92.55%) against red spider mite where as Bio-Cawach, Neemakar, Rescue and Torpedo exhibited pronounced acaricidal action (89.78%~91.67%) at 72HAT. Similar trend of toxicity was found at 24HAT & 48HAT. The mortality was in a linear trend i.e. increasing with increasing of time. From the field evaluation, it was found that the highest (81.34%) reduction in mite population was observed in Miticon treated plot followed by Rescue treated plot (81.01%). The lowest (74.07%) reduction in mite population was observed in Bio-Cawach treated plot. The order of toxicity of the six plant origin commercial biopesticides on adult red spider mite in both laboratory and field condition was: Miticon>Rescue>Neemakar>Karanza>Torpedo>Bio-Cawach. Application of the tested biopesticides did not affect the natural predators such as Stethorus gilvifrons and Oxyopes sp. Tea samples made from biopesticide-treated shoots were found taint free when subjected to organoleptic evaluation. These eco-friendly low cost plant products can therefore be incorporated in the strategy of integrated pest management (IPM) to reduce the load of chemical pesticides in tea.

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几种植物源性商品生物农药对茶叶中赤蜘蛛螨的防效评价

2013年3月至2014年12月，在Moulvibazar Srimangal孟加拉国茶叶研究所(BTRI)昆虫学实验室和主要农场下，对几种植物源性商业生物农药对茶叶中的红蜘蛛螨进行了试验评价。生物卡瓦赫(凤尾花)、卡兰扎(印楝树+凤尾花)、米提康(各种草药、生物碱和脂肪酸盐)、尼玛卡(印度楝树、卡兰花和图尔斯)、救援(白荆花+不毛藤)和雷(苦豆子+无丝茉莉)分别被考虑作为处理，剂量分别为0.8 ml、1.0 ml、1.0 ml、1.0 ml、0.5 ml和0.5 ml。数据采集时间为实验室24hat、48HAT、72HAT(处理后小时)，野外采集时间为每周一次。结果表明，在室内和田间试验条件下，所有生物农药对茶叶中的红蜘蛛螨均有一定的毒力，显著降低了茶叶中的红蜘蛛螨数量。在实验室条件下，密替康对红蜘蛛螨的毒力最高(93.28%)，其次是卡兰扎(92.55%)，而生物卡瓦赫、尼玛卡、救援和雷雷对红蜘蛛螨的毒力显著(89.78%~91.67%)。24HAT和48HAT也发现了类似的毒性趋势。死亡率随时间的增加呈线性上升趋势。现场评价结果显示，micticon处理的螨体数量降幅最大(81.34%)，其次是Rescue处理(81.01%)。在生物卡瓦赫处理的小区中，螨的减少幅度最小，为74.07%。6种植物源性商品生物农药在室内和田间对成虫的毒力顺序为:micticon >Rescue>Neemakar>Karanza>Torpedo>Bio-Cawach。施用生物农药后，茶树的天敌如褐花蓟马(Stethorus gilvifrons)和Oxyopes sp.没有受到影响。用生物农药处理过的茶树梢制成的茶叶样品在感官评价中没有受到污染。因此，这些生态友好的低成本植物产品可以纳入综合虫害管理(IPM)战略，以减少茶叶中的化学农药负荷。

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

茶叶科学

CiteScore

1.50

自引率

0.00%

发文量

2558

期刊介绍： The Journal of Tea Science was established in August 1964, approved by the Publicity Department, CCCPC. Its title was inscribed by Zhu De, the chairman of CCCPC. It was discontinued during the Cultural Revolution in 1966, and it was reissued in August 1984, approved by the State Scientific and Technological Commission.Academicians Chen Zongmao and Liu Zhonghuaof the Chinese Academy of Engineering served as the directors of the editorial board. The Journal of Tea Science is managed by the China Association for Science and Technology,sponsored by the China Tea Science Society and the Tea Research Institute of the Chinese Academy of Agricultural Sciences, and edited and published by the editorial office of the Journal of Tea Science. It is the only one of Chinese core journals in the field of tea science that is included in the core library of the Chinese Science Citation Database.Its Domestic Unified Serial Number is CN 33-1115/S, its International Standard Serial Number is ISSN 1000-369X and its International publication name code is CODEN-CHKEF4. At present, the Journal of Tea Science is a bimonthly publication, published in the middle of the month, with a book size of 16.