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dc.contributor.authorKarunditu, M.W.
dc.contributor.authorMugendi, D.N.
dc.contributor.authorKung'u, J.B.
dc.contributor.authorVanlauwe, B.
dc.date.accessioned2014-02-03T08:46:10Z
dc.date.available2014-02-03T08:46:10Z
dc.date.issued2007
dc.identifier.citationAdvances in Integrated Soil Fertility Management in sub-Saharan Africa: Challenges and Opportunities 2007, pp 537-546en_US
dc.identifier.issn978-1-4020-5760-1
dc.identifier.urihttp://ir-library.ku.ac.ke/handle/123456789/8903
dc.descriptionDOI 10.1007/978-1-4020-5760-1_51en_US
dc.description.abstractManagement of nitrogen (N) nutrition is a vital aspect in maize production systems ofKenya. In Central andWestern parts of Kenya, high population density has eliminated the use of traditional fallow farming systems for replenishing soil fertility while high unevenly distributed rainfall increase chances of N leaching. A study was conducted at Maseno, and Kabete to investigate the fate of fertilizer N in the soil-plant system using treatments that had been receiving leaf prunings of Calliandra calothyrsus and Tithonia diversifolia. Two microplots were installed in the main treatments to which labelled fertilizer was applied. At the beginning and at the end of 2002 long rains, soil was sampled to 200 cm for N and 15N enrichment analysis at the two trials. Also at the end of the season plant samples were collected for N and 15N analysis. At Maseno trial, evenly distributed rainfall and the influence of organic resource quality enhanced good fertilizer nitrogen recovery in the maize crop. Also substantial nitrate movement down the soil profile was observed in the control followed closely by calliandra at the end of the 2002 long rains season. At Kabete trial recorded the poorest fertilizer N recovery due to unevenly distributed rainfall. Limited soil moisture reduced both soil and fertilizer N uptake which was reflected in high N in the top soil and low recovery in plant. Most of the nitrate-N was left in the tp soil as a result of low rainfall which couldn’t move it into the lower soil depthsen_US
dc.language.isoenen_US
dc.publisherSpringer Netherlandsen_US
dc.subjectLabelled fertilizeren_US
dc.subjectmineral Nen_US
dc.subjectnitrate movementen_US
dc.subjectmicroplotsen_US
dc.subjectnitrogen-15en_US
dc.titleFertilizer nitrogen recovery as affected by soil organic matter status in two sites in Kenyaen_US
dc.typeBook chapteren_US


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