COMPARATIVE EFFECTS OF NEEM EXTRACTS AND CARBOFURAN ON THE PERFORMANCE OF OKRA (Abelmoschus esculentus) INFESTED BY ROOT KNOT NEMATODE IN KOGI STATE, NIGERIA
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Date
2020
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Federal University Oye-Ekiti
Abstract
The nematicidal effect of aqueous Azadirachtha indica (neem) leaf extract and a standard synthetic nematicide, carbofuran were evaluated for their effect on pathogenicity of Meloidogyne spp on growth and yield of okra. The experiment was carried out during the 2019/2020 cropping season. There were seven treatments and control replicated three times in a Randomized Complete Block Design to give a total of twenty-four plots. Data collected on growth and yield parameter were subjected to analysis of variance (ANOVA) and means were separated using Duncan Multiple Range Test (DMRT) test at 5% level of probability. The results showed the effect of T7 (carbofuran) on okra to be significantly better than all other treatments tested.. Also at harvest, galling was significantly lower in carbofuran treated plants compared to the neem treated plants. The control plants were most galled with poor yield and had stunted growth. The moderate concentrations of both neem (100 and 200 ml aqueous, 100 and 200 ml ethanol, 25 and 50 g powdered neem and 0.26 g of carbofuran performed significantly (p<0.05) better than control plants in suppressing the effects of root-knot nematode on yield and growth of okra. These suggest that the neem extract have nematicidal property and would be effective in the management of root-knot nematodes. Treatment T5 (Powdered neem 25 g) had significantly better plant height and was therefore recommended to farmers in the study area, pending further studies.
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Hinmikaiye, A.S.,Izuogu, N.B. &Babalola, T.S. (2020).COMPARATIVE EFFECTS OF NEEM EXTRACTS AND CARBOFURAN ON THE PERFORMANCE OF OKRA (Abelmoschus esculentus) INFESTED BY ROOT KNOT NEMATODE IN KOGI STATE, NIGERIA.Vol 4 No 2 (2020): FUOYE Journal of Agriculture and Human Ecology