The use of chemical pesticides to control two spotted spider mite (TSSM), Tetranychus urticae Koch (Acari: Tetranychidae) in various crops has resulted in the development of various problems viz., residues in sprayed crop, pest resistance, pest resurgence and environmental pollution. For an effective alternate environmentally safe management tactic, the microbial biorationals constitute an important tool. In the present study, entomopathogenic fungi (EPF) and botanical pesticides were tested at different concentrations for the management of eggs and other active stages of T. urticae infesting parthenocarpic cucumber grown under poly-net house. Among these biorationals, spraying of Neem Baan at 10 and 15 ml/l resulted in significantly higher level of reduction in TSSM population (88.5 to 91.8% in egg and 86.6 to 90.9% in active stage of mites after 3rd spray, respectively) than with EPFs. Among the EPFs, Lecanicillium lecanii (Zimmerman) Viegas and Beauveria bassiana Balsamo (Vuillemin) [(at 10 & 15 ml/l (82.0 to 87.0% in egg and 79.2 to 84.1% in active stage of mites)] was found to be more effective than Metarhizium anisopliae (Metschnikoff) Sorokin [(at 10 & 15 ml/l (77.0 to 82.4% in egg and 76.4 to 80.4% in active stage of mites after third spray, respectively)] in reducing different life stages of T. urticae on cucumber. Significantly higher yields of cucumber were recorded from plot treated with Neem Baan at 10 and 15 ml/l (2350.7 to 2437.3 g/ plant) were used. As Neem Baan 1% increased growth and yield of cucumber by controlling T. urticae, effectively, it can act as a good alternative for the chemical pesticide which in most instances leads to residues, pest resistance and pest resurgence problems.

【摘要】：在多种农作物中使用化学农药防治二斑叶螨(TSSM)、二斑叶螨(螨虫:叶螨科),导致了农药残留、害虫抗药性、害虫死灰复燃和环境污染等问题。 。对于有效的替代环境安全管理策略，微生物生物理性构成了一个重要的工具。在本研究中，测试了不同浓度的昆虫病原真菌（EPF）和植物源农药对在多网棚下生长的单性结实黄瓜的虫卵和其他活动阶段的二斑叶螨的管理。在这些生物合理物中，与喷洒 10 和 15 ml/l 的 Neem Baan 相比，喷洒印楝 Baan 导致 TSSM 种群的减少水平显着更高（第 3 次喷洒后，卵​​中的螨虫数量分别为 88.5% 至 91.8%，螨虫活跃期的螨虫数量为 86.6% 至 90.9%）。公积金。在 EPF 中，发现Lecanicillium lecanii (Zimmerman) Viegas 和Beauveria bassiana Balsamo (Vuillemin) [（10 和 15 ml/l（卵中 82.0 至 87.0%，螨虫活跃期 79.2 至 84.1%）] 含量更高比Metarhizium anisopliae (Metschnikoff) Sorokin [（10 和 15 ml/l（第三次喷雾后卵中分别为 77.0 至 82.4%，螨虫活跃期为 76.4 至 80.4%）] 有效减少不同生命阶段的二斑叶螨黄瓜。用 10 和 15 ml/l（2350.7 至 2437.3 克/株）印楝班处理过的地块记录显示黄瓜产量显着提高。1% 的印楝班通过控制二斑绦虫提高了黄瓜的生长和产量。实际上，它可以作为化学农药的良好替代品，化学农药在大多数情况下会导致残留、害虫抗药性和害虫死灰复燃的问题。