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Differential impact of pesticides and biopesticides on edaphic invertebrate communities in a citrus agroecosystem

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文献类型：外文期刊

作者： Majeed, M. Z. ² ; Naveed, M. ² ; Riaz, M. A. ² ; Ma, C-S ¹ ; Afzal, M. ² ;

作者机构： 1.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, PR, Peoples R China

2.Univ Sargodha, Coll Agr, Dept Entomol, Sargodha 40100, Pakistan

3.Univ Georgia, Dept Entomol, Athens, GA 30602 USA

关键词： bio-pesticides;fungicides;insecticides;population abundance;soil invertebrates

期刊名称：ISJ-INVERTEBRATE SURVIVAL JOURNAL （影响因子：1.115；五年影响因子：1.254 ）

ISSN： 1824-307X

年卷期： 2018 年 15 卷

页码：

收录情况： SCI

摘要： Edaphic invertebrate fauna is usually exposed directly or indirectly to a wide range of pesticides in agroecosystems worldwide. Very few studies have assessed the negative effects of these pesticides on the diversity and population dynamics of soil invertebrates. In this study, the effect of most commonly used pesticides viz; bifenthrin (a synthetic pyrethroid), spinosad (a bio-insecticide), Aliette (a synthetic fungicide) and Trichoderma harzianum formulation (30x10(6) cells mL(-1); a bio-fungicide) was assessed on soil invertebrate fauna in a citrus agroecosystem. Secondary objective was to compare the impact of synthetic versus biological pesticides and insecticides versus fungicides. There was a significant effect of all pesticides on the population abundance of springtails (F-4,F-14 = 16.53; p< 0.001), mites (F-4,F-14 = 12.07; p< 0.001) and ants (F-4,F-14 = 16.28; p< 0.001). By and large, soil fauna got recovered after two to three weeks post-treatment. Insecticides were more suppressive for soil invertebrates than fungicides. Overall, biological pesticides i.e. spinosad and T. harzianum formulation were less disruptive to soil invertebrate fauna than synthetic conventional pesticides. Hence, keeping in view the key role of soil invertebrates in soil sustainability and crop productivity, the utilization of biopesticides should be encouraged.

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