Bio-efficacy, persistence and residual toxicity of greener insecticides against predominant flea beetles on cabbage crop in Kashmir

Acta agriculturae Slovenica Pub Date : 2024-03-29 DOI:10.14720/aas.2024.120.1.17198

Saim Maqsood, A. Buhroo, Asma Sherwani, M. Mukhtar

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Abstract

The flea beetles, Phyllotreta striolata (Fabricius, 1803) and Altica himensis (Shukla, 1960) (Coleoptera: Chrysomelidae: Alticinae) are one of the most serious pests of Brassica oleracea L. in Kashmir. In order to find eco-friendly control against these pests, bio-efficacy, persistence and residual toxicity of some newer insecticides viz., Emamectin benzoate 5SG @ 0.002 and 0.004 per cent, Spinosad 45SC @ 0.0035 and 0.007 per cent was evaluated against P. striolata and A. himensis infesting cabbage crop. Mortality caused by these insecticides was recorded in all the treatments. The result revealed that spinosad 45SC @ 0.007 per cent exhibited significantly lowest pest population and the highest efficacy against cabbage flea beetles. The persistence and residual toxicity of these insecticides was worked and it was found that spinosad 45SC @ at 0.007 per cent revealed the highest PT value of (346.11 & 321.43) for P. striolata and (299.57 & 322.38) for A. himensis compared to other insecticides. LT50 values of (4.13 & 3.38) for P. striolata and (3.08 & 3.84) for A. himensis were the highest for Spinosad 45SC @ 0.007 per cent. It was concluded that spinosad 45SC @ 0.007 per cent offers a feasible choice for the management of P. striolata and A. himensis.

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绿色杀虫剂对克什米尔甘蓝作物上主要跳甲虫的生物效力、持久性和残留毒性

跳甲虫 Phyllotreta striolata (Fabricius, 1803) 和 Altica himensis (Shukla, 1960) （鞘翅目：鞘翅目：Alticinae）是克什米尔地区芸苔属植物最严重的害虫之一。为了找到对这些害虫无害的生态控制方法，我们评估了一些新型杀虫剂的生物效力、持久性和残留毒性，这些杀虫剂是：苯甲酸二甲戊酯 5SG @ 0.002 和 0.004%、杀螟松 45SC @ 0.0035 和 0.007%，用于防治为害甘蓝作物的 P. striolata 和 A. himensis。所有处理都记录了这些杀虫剂造成的死亡。结果表明，spinosad 45SC @ 0.007% 对甘蓝跳甲的害虫数量明显最少，药效最高。研究了这些杀虫剂的持久性和残留毒性，发现与其他杀虫剂相比，0.007% 的 spinosad 45SC 对 P. striolata 的 PT 值最高（346.11 和 321.43），对 A. himensis 的 PT 值最高（299.57 和 322.38）。施用 Spinosad 45SC @ 0.007% 时，P. striolata 和 A. himensis 的半衰期分别为（4.13 和 3.38）和（3.08 和 3.84）。结论是 Spinosad 45SC @ 0.007% 是治理条纹叶枯病和黑条纹叶枯病的可行选择。

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

Acta agriculturae Slovenica Agricultural and Biological Sciences-Agricultural and Biological Sciences (all)

CiteScore

0.90

自引率

0.00%

发文量

期刊介绍： Acta agriculturae Slovenica is a scientific journal published quarterly by the Agronomy, and the Zootechnical Departments of the Biotechnical Faculty, University of Ljubljana, Slovenia. Source of high quality research from the field of agronomy, zootechnics, applied biology and related fields from Slovenia and other countries.