Control of the Mango Shield Scale, Milviscutulus Mangiferae (Green) by Two Bio Rational Insecticides

Alexandria Science Exchange Journal Pub Date : 2023-12-31 DOI:10.21608/asejaiqjsae.2023.331226

Mohamed Rezk, Ahmed Abdel-Aty

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Abstract

Verticillium lecanii (Zimm) conidia were formulated in our laboratory (a myco-insecticide), WP (2.5%) and tested for its reduction on the mango shield scale, M. mangiferae (Green) different stages on the host plant trees comparing with a commercial insecticide (Pyriproxyphen (Admiral), 10% EC) for their reduction of each M. mangiferae stage as well as its total population. All the treated insect stages populations were differently affected in a function of the treated stage and the time after treatment (exposure time). The formulated bio-insecticide (myco-insecticide) was significantly more toxic than pyriproxyfen (admiral) in its effect on adult population especially after two weeks of treatment during the two season’s treatment. It showed an effect similar to the pyriproxyfen (admiral) against the other stages. Both the 1 st and the 2 nd nymph instars were less affected than the other treated stages (adult and crawler) with the two tested bio-insecticides. The low toxicity of the formulated V. lecanii to non-target biota encouraged us to stress on its entrance to the entomopathogenic fungi clique against the examined insect,

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两种生物合理杀虫剂对芒果盾鳞 Milviscutulus Mangiferae (Green) 的控制作用

我们的实验室配制了莱卡轮枝霉菌（Zimm）分生孢子（一种霉菌杀虫剂），可湿性粉剂（2.5%），并与商业杀虫剂（Pyriproxyphen (Admiral)，10%EC）比较，测试其对寄主植物树上不同阶段的芒果盾鳞芒果鳞（M. mangiferae (Green)）的抑制作用，以减少每个阶段的芒果盾鳞芒果鳞（M. mangiferae）及其总数量。根据处理阶段和处理后时间（接触时间）的不同，所有处理过的昆虫阶段的数量都受到了不同程度的影响。在对成虫数量的影响方面，配制的生物杀虫剂（杀霉菌剂）的毒性明显高于吡虫啉（啶虫脒），尤其是在两季处理中处理两周后。它对其他阶段的影响与吡丙醚（钦定）相似。与其他阶段（成虫和爬虫）相比，两种生物杀虫剂对第 1 和第 2 个若虫阶段的影响较小。配制的 V. lecanii 对非目标生物群的低毒性促使我们强调其进入昆虫病原真菌小群以防治受检昆虫、

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来源期刊

Alexandria Science Exchange Journal

自引率

0.00%

发文量

142

审稿时长

5 weeks