Integrated soil management for the savanna zone of W. Africa: legume rotation and fertilizer N

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dc.contributor.authorCarsky, R. J.en
dc.contributor.authorOyewole, B.en
dc.contributor.authorTian, G.en
dc.contributor.departmentSustainable Agriculture and Natural Resource Management (SANREM) Knowledgebaseen
dc.coverage.spatialKadunaen
dc.coverage.spatialNigeriaen
dc.coverage.spatialBauchien
dc.coverage.spatialNigeriaen
dc.coverage.temporal1995 - 1995en
dc.date.accessioned2016-04-19T18:07:48Zen
dc.date.available2016-04-19T18:07:48Zen
dc.date.issued1999en
dc.description.abstractIntegrated soil management with leguminous cover crops was studied at two sites in the northern Guinea savanna zone of northern Nigeria, Kaduna (190 day growing season) and Bauchi (150 days). One-year planted fallows of mucuna, lablab, and crotalaria were compared with natural grass fallow and cowpea controls. All treatments were followed by a maize test crop in the second year with 0, 30, or 60 kg N/ha as urea. Above ground legume residues were not incorporated into the soil and most residues were burned early in the dry season at the Kaduna site. Legume rotation increased soil total N, maize growth in greenhouse pots, and dry matter and N accumulation of maize. Response of maize grain yield to 30 kg N ha1 as urea was highly significant at both sites and much greater than the response to legume rotation. The mean N fertilizer replacement value from legume rotation was 14 kg N/ha at Kaduna and 6 kg N/ha at Bauchi. W ith no N applied to the maize test crop, maize grain yield following legume fallow was 365 kg/ha higher than natural fallow at Bauchi and 235 kg/ha higher at Kaduna. The benefit of specific legume fallows to subsequent maize was mostly related to above ground N of the previous legume at Bauchi, where residues were protected from fire and grazing. At Kaduna, where fallow vegetation was burned, maize yield was related to estimated below ground N. The results show that legume rotation alone results in small maize yield increases in the dry savanna zone.en
dc.format.mimetypeapplication/pdfen
dc.identifier315en
dc.identifier522en
dc.identifier.citationNutrient Cycling in Agroecosystems 55(2): 95-105en
dc.identifier.issn1385-1314en
dc.identifier.issn1573-0867en
dc.identifier.other315_Carsky_et_1999.pdfen
dc.identifier.urihttp://hdl.handle.net/10919/65383en
dc.language.isoen_USen
dc.publisherSpringer Science+Business Media B.V., Formerly Kluwer Academic Publishers B.V.en
dc.relation.urihttp://www.springerlink.com/app/home/contribution.asp?wasp=7cfae47253d94d9b9f7739309aa4785c&referreren
dc.rightsIn Copyrighten
dc.rights.holderCopyright 1999 Kluwer Academic Publishersen
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectSoil nutrientsen
dc.subjectGreen manure cropsen
dc.subjectSoil managementen
dc.subjectArid zonesen
dc.subjectSoilen
dc.subjectFertilizationen
dc.subjectCover cropsen
dc.subjectSavannahen
dc.subjectN fertilizeren
dc.subjectMaizeen
dc.subjectCowpeasen
dc.subjectN fertilizer replacement valueen
dc.subjectIntegrated soil managementen
dc.subjectField Scaleen
dc.titleIntegrated soil management for the savanna zone of W. Africa: legume rotation and fertilizer Nen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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