Working Document Series Open Access 2012 RUF-32950

Incorporating Crotalaria Species in Cropping Systems for the Management of Root-knot Nematodes in Indigenous Vegetable Crops in Western Kenya

A.K. KipkoechJ.M. MbogohL. NgodeP. NjiraJ. OchuodhoE. Omami

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Abstract

203 words

There is rekindled interest and increased demand for African Leafy Vegetables (ALVs) by rural and urban dwellers of all socio-economic classes in Kenya. This has stimulated production of these vegetables but their supply has not been able to meet the demand, leading to low consumption levels. This has led to high occurrence of disorders such as acute megaloblastic anaemia, blindness and low immunity resulting in severe birth defects, malaria, HIV/AIDs and worse still deaths of more than four million children and mothers annually. Rootknot nematodes (RKNs) especially Meloidogyne spp. are key vegetable production constraints in western Kenya. They reduce plant growth by lowering water and mineral uptake and by enhancing crop damage by certain pathogens. Because of being less environmentally harmful and due to the increased demand for organic produce, the use of antagonistic crops in nematode management is a potentially valuable alternative to chemical nematicides. The objective of this study is to assess the effectiveness of Crotalaria species in rotation or as an intercrop in managing RKNs in susceptible vegetable crops like Solanum spp. and Cleome spp. Results will enable farmers to design and implement effective crop cycles that will result in increased vegetable production in nematode prone fields of Western Kenya.

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