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dc.contributor.authorCarsky, R.J.
dc.contributor.authorOyewole, B.
dc.contributor.authorTian, G.
dc.identifier.citationCarsky, R.J., Oyewole, B. & Tian, G. (2001). Effect of phosphorus application in legume cover crop rotation on subsequent maize in the savanna zone of West Africa. Nutrient Cycling in Agroecosystems, 59(2), 151-159.
dc.description.abstractThe benefit of planted fallow with legume cover crops may be limited on P deficient soil. A trial was conducted at two P deficient sites in northern Nigeria to test the hypothesis that application of P to legume cover crop fallow can substitute for N application to subsequent maize. Mainplots consisted of leguminous fallows followed by unfertilized maize, or native (mostly grass) fallows followed by maize with 0 or 40 kg N ha−1 (Kaduna) and 0, 30 or 60 kg N ha−1 (Bauchi). Three rates of P (0, 9, and 18 kg ha−1) were applied to fallow sub-plots as single superphosphate. In the first year, dry matter accumulation of lablab (Lablab purpureus) responded to P application, while mucuna (Mucuna cochinchinensis) dry matter did not. Lablab mulch dry matter during the dry season was significantly increased by previous season P application while mucuna was not. Previous fallow vegetation was a significant factor for maize growth in the second year but the interaction with P applied to the fallow was not significant at P < 0.05. Substantial and similar yield increases were achieved with application of N fertilizer to maize and from application of 9 kg P ha−1 to previous lablab. Depending on local economic circumstances, a good use of expensive inorganic fertilizer might be to apply P sources to cover crop legumes to profit from additional N benefits as well as residual effects of applied P.
dc.subjectCover Crops
dc.titleEffect of phosphorus application in legume cover crop rotation on subsequent maize in the savanna zone of West Africa
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionWest Africa
cg.isijournalISI Journal
cg.authorship.typesCGIAR single centre
cg.iitasubjectGrain Legumes
cg.journalNutrient Cycling in Agroecosystems
cg.howpublishedFormally Published
cg.accessibilitystatusLimited Access

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