ABSTRACT Green Pepper (Capsicum annuum var. frutescens Linnaeus) is a highly nutritious and commercial vegetable crop grown in open field and protected conditions throughout the world. However, two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae) causes major problems in its cultivation under protected conditions resulting in significant losses. The objective of this study was to evaluate the efficacy of different biorationals against T. urticae under laboratory and poly-nethouse conditions. Results revealed that among all the biorational treatments, there was more than 80% reductionwith propargite and spiromesifen, whereas minimum reduction of mites was reported in HMO at 0.2% (35–41% mortality). In botanicals, ozoneem resulted in higher mortality (47–78%) as compared to homemade neem fruit aqueous extract (41–62%). Among entomopathogenic fungi, Beauvaria bassiana was found more effective with mortality range of 43–58% compared to Lecanicillium lecani. The predatory mite, Neoseiulus longispinosus reduced the pest mite population by 40–60% at different ratios. All treatments were found superior in reducing the population of pest mite over the untreated control, so these biorationals can be integrated for effective mite management programmes under protected conditions.

中文翻译：

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生物理性药对两斑叶螨、荨麻科科赫（Acari：Tetranychidae）侵染在保护条件下种植的青椒的功效

摘要 青椒（Capsicum annuum var. frutescens Linnaeus）是一种营养丰富的商业蔬菜作物，生长在世界各地的露天和受保护的条件下。然而，二斑叶螨，Tetranychus urticae Koch (Acari: Tetranychidae) 在保护条件下的养殖造成重大问题，造成重大损失。本研究的目的是评估不同生物理性药物在实验室和多网箱条件下对荨麻疹的功效。结果显示，在所有生物合理处理中，使用炔螨特和螺螨酯可减少 80% 以上，而 HMO 中报告的螨类减少最少为 0.2%（死亡率为 35-41%）。在植物药方面，与自制印楝果实水提取物（41-62%）相比，臭氧导致更高的死亡率（47-78%）。在昆虫病原真菌中，白僵菌比 Lecanicillium lecani 更有效，死亡率范围为 43-58%。捕食性螨 Neoseiulus longispinosus 以不同的比例将害虫数量减少了 40-60%。发现所有处理在减少害螨数量方面都优于未经处理的控制，因此可以将这些生物理性整合到受保护条件下的有效螨管理计划中。