نوع مقاله : مقاله کامل، انگلیسی
نویسندگان
1 گروه گیاهپزشکی، دانشکدگان کشاورزی و منابع طبیعی دانشگاه تهران، کرج، ایران
2 گروه زراعت و اصلاح نباتات، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج، ایران
چکیده
چکیده تصویری
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کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The cowpea weevil, Callosobruchus maculatus (F.) (Col.: Chrysomelidae), is one of the most serious pests of legume crops worldwide, affecting both yield and quality. Humans have traditionally relied on chemical pesticides for control, which are hazardous to human health and the environment. Another sustainable means of pest management is through the use of plant essential oils. This study aimed to chemically characterize and evaluate the fumigation toxicity of essential oils from lavender (Lavandula angustifolia) and spearmint (Mentha spicata) on cowpea weevil mortality and biological parameters. The main constituents of spearmint oil, as revealed by gas chromatography-mass spectrometry (GC-MS) analysis, were carvone (76.42%), menthol (3.29%), eucalyptol (3.27%), and D-limonene (3.12%). In comparison, the main constituents of lavender oil were linalool (38.01%), linalyl acetate (21.27%), eucalyptol (9.6%), camphor (8.07%), and lavandulol (5.11%). The oils were found to have LC50 values of 5.27 µL/L air (against males) and 10.12 µL/L air (against females) for lavender, and 9.45 µL/L air (against males) and 17.36 µL/L air (against females) for spearmint. Also, the effect of the two essential oils on the biological parameters of insects was assessed after exposure to LC30 concentrations. The LC30 application lowered egg deposition, extended larval duration, reduced hatching success, and shortened the lifespan of both sexes of weevils. According to these findings, lavender essential oil particularly holds promise as a management option for the cowpea weevil in integrated pest management (IPM) programs.
کلیدواژه‌ها [English]
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