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Asian Journal of Plant Pathology
Year: 2016  |  Volume: 10  |  Issue: 1-2  |  Page No.: 15 - 20

Management of Root-Knot Nematode, Meloidogyne javanica on African Yam Bean with Pig Excrements

Christopher C. Onyeke, Godswill C. Ajuziogu, Simon C. Eze and Kevin I. Ugwuoke    

Abstract: Screen house experiments were conducted to ascertain the effects of soil amendments with pig excrements/manure at different levels (0 (controls), 10, 20, 30, 40, 50 and 60 t ha–1) on the management of Meloidogyne javanica at different inoculum densities (0 (controls), 2,000 and 4,000 eggs) on the African yam bean. Soil amendment with pig manure significantly (p≤0.05) improved on the vegetative growth of African yam bean plants infected with eggs of M. javanica when compared with infected plants but without amendment. The amendment also significantly (p≤0.05) suppressed the formation of root galls and egg masses and consequently recorded lower gall and egg mass indices as against the controls. The effect of soil amendments with pig manure on the management of M. javanica on test plants increased with increase in amendment levels. It was also observed that the infectivity of M. javanica increased at a higher inoculums density (4,000 eggs). Generally, it can be concluded that incorporation of pig excrement/manure in African yam bean fields infested with M. javanica would lead to improved growth of plants and also suppress nematode population.

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