Impact of soil nutrient management practices on plant parasitic nematodes of maize in central Kenya

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dc.contributor.authorMugendi, D.N.
dc.contributor.authorWaceke, J.W.
dc.contributor.authorMbaru, N.J.
dc.date.accessioned2015-06-17T13:00:28Z
dc.date.available2015-06-17T13:00:28Z
dc.date.issued2004
dc.descriptionBook Chapteren_US
dc.description.abstractMaize (Zea mays L.) is the staple food in Kenya. The current average production of 1.5-2 t per ha is far below the germ plasm potential of 3-7 t per ha. Low soil fertility, nematode and insect pests, diseases and poor quality of seed and advisory services are some of the maize production constraints in Kenya. However, there have been major efforts to overcome these production constraints in order to increase maize production. For example, useof animal manure and green manure alone or in combination with sub-optimal levels of inorganic fertilisers and interplanting maize with leguminous trees and shrubs are being recommended to farmers for replenishing soil nutrients. Some of these soil nutrient management strategies have negative or positive effect on plant parasitic nematode populations. The objective of the study was to assessthe impact of some of the soil nutrient management strategies on plant parasitic nematodes of maize, especially lesion nematodes (Pratylenchus spp.), which cause yield losses of up to 50% in maize. The soil nutrient management strategies whose impact on nematodes was assessed were mucuna and crotalaria alone, as intercrops or in combination with half the recommended rate of N fertiliser, and incorporation of cattle manure and green manure (Tithonia diversifolia, Calliandra calothrysus and Leucaena trichandra) singly or in combination with half the recommended rate of N fertiliser. Mucuna and crotalaria intercrops reduced nematode diseaseseverity and population by 20%. Addition of inorganic N fertiliser reduced efficacy of mucuna by 99% but not that of crotalaria against the nematodes. Incorporation of green manure had no effect or increased lesion nematode population and, consequently, diseaseseverity. In most cases addition of N fertiliser did not affect the effects of the green manure on nematodes. Cattle manure in combination with inorganic N reduced lesion nematodes and the associated disease severity by up to 75%.en_US
dc.description.sponsorshipICRAF- World Agroforestry Centre ANAFE- African Network of Agroforstry Education SIDA- Swedish International Development cooperation Agencyen_US
dc.identifier.isbn9290591609
dc.identifier.urihttp://ir-library.ku.ac.ke/handle/123456789/12970
dc.language.isoenen_US
dc.publisherAfrican Network for Agroforestry Education (ANAFE)en_US
dc.subjectcattle manureen_US
dc.subjectfoliar biomassen_US
dc.subjectgreen manureen_US
dc.subjectinorganic fertiliseren_US
dc.subjectlegumesen_US
dc.subjectmaize nematodesen_US
dc.subjectsoil fertilityen_US
dc.titleImpact of soil nutrient management practices on plant parasitic nematodes of maize in central Kenyaen_US
dc.title.alternativeRebuilding Africa's capacity for agricultural development: The role of tertiary educationen_US
dc.typeBook chapteren_US
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