Alley cropping of maize and Gliricidia sepium in the Sudanese Sahel Region: Some technical feasibility aspects

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dc.contributor.authorNdiaye, M.en
dc.contributor.authorGanry, F.en
dc.contributor.authorOliver, R.en
dc.contributor.departmentSustainable Agriculture and Natural Resource Management (SANREM) Knowledgebaseen
dc.coverage.spatialSahel Regionen
dc.coverage.spatialSudanen
dc.date.accessioned2016-04-19T18:55:45Zen
dc.date.available2016-04-19T18:55:45Zen
dc.date.issued2000en
dc.descriptionMetadata only recorden
dc.description.abstractAn association in an alley cropping experiment of a short-term maize variety and a tree legume (Gliricidia sepium) adapted to the Sudanese Sahel region was studied from the point of view of the nitrogen balance and plot yields. Isotopic labeling applied in the field enabled the contribution to maize nitrogen nutrition from different nitrogen sources (fertilizer, prunings, and soil) to be quantified. For equal cultivated areas, alley cropping provides a maize yield greater than that of maize grown in pure stand without nitrogen fertilizer. However this yield is only 40% of that obtained in pure stands with fertilizer nitrogen. Alley cropping gives a very favourable Land Equivalent Ratio (LER) of 0.90 and 1.58 compared with N-fertilized and non-N-fertilized plots, respectively. These LERs demonstrate the increased biological efficiency of the cultivated soil in an agroforestry system. The percentage of the total nitrogen in the maize coming from prunings (Nfdp) varies between 30 and 35% and the true coefficient of nitrogen utilization of the prunings (TCUp) varies from 15-25%. In the environment of central Senegal, the percentage of total nitrogen of G. sepium coming from N2 fixation is quite low (Ndffix = 25%), and consequently, in the maize, the nitrogen coming from N2 fixation (Ndffix) is only 8%. It is therefore necessary to improve the efficiency of nitrogen fixation of G. sepium in this zone to assure the sustainability of the agroforestry system. ---Journal/Author's Abstracten
dc.format.mimetypetext/plainen
dc.identifier1121en
dc.identifier.citationArid Land Research and Management 14(4): 317-327en
dc.identifier.issn1532-4982en
dc.identifier.urihttp://hdl.handle.net/10919/65957en
dc.language.isoen_USen
dc.publisherTaylor and Francis Ltden
dc.rightsIn Copyrighten
dc.rights.holderCopyright 2000 Taylor and Francis Ltden
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectAgroforestryen
dc.subjectAgricultureen
dc.subjectSoil fertilityen
dc.subjectFertilizationen
dc.subjectNitrogenen
dc.subjectUtilizationen
dc.subjectNitrogen fixationen
dc.subjectEcosystemen
dc.titleAlley cropping of maize and Gliricidia sepium in the Sudanese Sahel Region: Some technical feasibility aspectsen
dc.typeAbstracten
dc.type.dcmitypeTexten
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