Assessment of new chemistry insecticides for their nematicidal potential against root knot nematode, Meloidogyne incognita
Paper Details
Assessment of new chemistry insecticides for their nematicidal potential against root knot nematode, Meloidogyne incognita
Abstract
The present research work was conducted to check the nematicidal potential of new chemistry insecticides against root knot nematode, Meloidogyne incognita (Kofoid and White) due to the current unavailability of nematicides in local market. Assessment of twenty new chemistry insecticides available in the market of both bio and synthetic origin was done against M. incognita. Effect on egg hatching and juvenile’s mortality of M. incognita was assessed under in-vitro conditions. Three concentrations of each new chemistry insecticide were prepared viz., S, S/2, S/4 according to recommended dose of each insecticide. Data on egg hatching was recorded after 2, 4 and 6 days and on mortality after 24, 48 and 72 hours. Maximum hatching inhibition and mortality percentage was recorded in synthetic insecticides; Cartap and priority and bio; Nova Star and Proclaim. After 24 hours of incubation Cartap and priority at S, S/2 and S/4 caused maximum (85.67, 71.67, 63.00) and (76.33, 64.00, 53.00) mortality, respectively. After 2 days of incubation, Cartap and priority at S, S/2 and S/4 caused (90.00, 84.00, 72.00) and (66.33, 60.67, 50.33) % egg hatching inhibition, respectively. These four insecticides were selected and evaluated further against mobility of juveniles. Minimum number of J2’s were recovered in Cartap (93.68) followed by other chemicals while maximum were recovered in control (250.4). The findings of present investigation suggested suitable insecticides available in the market for growers having nematode problem in field to plan better management strategies for better crop yield.
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