Efficacy of Some Plant Extracts against Epilachna Beetle (Henosepilachna vigintioctopunctata (F) (Coleoptera: Coccinellidae)
S.N. Das*
Agricultural Training Centre/ State Agricultural Management and Extension Training Institute, Ramakrishna Mission Ashrama, Narendrapur, Kolkata, West Bengal - 700 103, INDIA
Soumyesh Mandal
Agricultural Training Centre/ State Agricultural Management and Extension Training Institute, Ramakrishna Mission Ashrama, Narendrapur, Kolkata, West Bengal - 700 103, INDIA
M.L. Chatterjee
School of Crop Protection, College of PGS, Central Agricultural University, Meghalaya - 793103, INDIA
DOI: NIL
Keywords: Plant extracts, Toxicity, LC50, Epilachna beetle
Abstract
In a laboratory experiment, six plant products were evaluated for their toxicity to control the effect of adult epilachna beetle on brinjal. Among them, parashi showed lowest LC50 value (0.34109), followed by oleander (0.34610), ramtulshi (0.35135), neem (0.48600), marigold (0.73190) and custard apple (0.79220) after 120 hours of treatment. The order of relative toxicity was found in the following way: parashi > oleander > ramtulsi > neem > marigold > custard apple.
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Reference
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