Laboratory evaluation of the toxicity of mineral oil, Diazinon, Malathion and Chlorpyrifos on ladybird, Cryptolaemus montrouzieri Mulsant (Col.: Coccinellidae)
Publish place: Journal of Crop Protection، Vol: 7، Issue: 1
Publish Year: 1396
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JCP-7-1_001
تاریخ نمایه سازی: 13 آبان 1402
Abstract:
Acute toxicity of the field recommended concentration of three conventional insecticides (Diazinon, Malathion and Chlorpyrifos) and mineral oil was evaluated on ۳rd and ۴th instar larvae and adults of Cryptolaemus montrouzieri Mulsant. The mortalities caused by the insecticides and mineral oil were significantly different. Diazinon and Malathion with ۱۰۰% mortality showed the highest toxicity to the different stages of the ladybird. Chlorpyrifos and mineral oil caused less than ۳۰% mortality, while mineral oil had the lowest harmful effect on this predator. Based on LC۵۰ and LC۹۰ values ۲۴h after treatment, the male and female adults of C. montrouzieri were more susceptible to Diazinon (۷۰۱ and ۶۳۵; ۱۲۵۷ and ۱۱۹۴ppm) than to Chlorpyrifos (۴۲۳۸ and ۴۳۱۶, ۵۶۸۳ and ۵۴۸۰ ppm). Based on International Organization of Biological Control (IOBC) classification, Chlorpyrifos and mineral oil were classified as category ۱ (harmless) and Diazinon and Malathion were placed in category ۴ (harmful).
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Authors
Salimeh Saedi
Department of Plant Protection, Faculty of Crop Sciences, Sari Agricultural Sciences and Natural Resources University, Sari, Iran.
Mohammad Reza Damavandian
Department of Plant Protection, Faculty of Crop Sciences, Sari Agricultural Sciences and Natural Resources University, Sari, Iran.
Hemmat Dadpour
Iranian Research Institute of Plant Protection, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran.
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