Novel Organic Fertilisers for Management of Root-Knot Disease of Soybean [Glycine max (L.) Merrill]
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Date
2011Author
Atungwu, Jonathan Jeremiah
Eremosele, Gold Jude
Ipoola Olabiyi, Timothy
Bukola Orisajo, Samuel
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Organic farming is currently receiving great impetus in Africa due to its potentials to
improve nutrition, income and livelihoods of resource-poor smallholder farmers. Sustainable
management of root-knot nematodes in organically grown soybean remain a major challenge in
Africa. Greenhouse studies were conducted to evaluate the efficacy of three novel organic fertilisers
(sunshine, neem, and IAR & T fertilisers) as organic nematicides for control of Meloidogyne
incognita (Mi) in a susceptible soybean variety. The organic fertilisers were applied two weeks
before planting. All three organic fertilisers were significant (P < 0.05) in reducing (96 – 99 %) Mi
nematode populations in soil leading to 86 – 100 % improvement in soybean grain yield. There
were high and positive relationships between plant heights stem girth and yield components. Root
gall development on test crop was negatively correlated with plant growth (r = - 0.47 to – 0.48) and
yield (r = - 0.57 to – 0.59).
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