Journal of FARM SCIENCES, Vol 36, No 3 (2023)

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Studies on population dynamics of major pests of okra

Lakshmikantha D H, Veeranna R, Guruprasad G S, Babu P

Abstract


Abstract: Okra [Abelmoschus esculentus (L.) Moench] is known to be infested by many insect pest among them the most important ones are sucking pests like aphids, leafhopper, whitefly and fruit borers like Earias vitella and Helicoverpa armigera. Controlling these pests is very much important to obtain good yield, hence knowledge about these pest incidence needed for taking up management practices. In this context, okra was sown during last week of November (rabi 2020-21) and observations were recorded at weekly interval. Peak incidence of aphid (23.44 aphids/3 leaves) and leafhopper (16.97 leafhopper/3 leaves) noticed during last week of December, whitefly (12.70 whiteflies/3 leaves) during second week of March. Fruit borers during third week of February and second week of March with per cent fruit damage of 44.9 (Earias vitella) and 13.59 (Helicoverpa armigera).Sucking pests incidence more up to 10th week old crop, there after the population declined. In case of fruit borers, they persisted upto end of the season. 

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