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Effect of staw application on rice yields and nutrient availability on an alkaline and a pHneutral soil in a Sahelian irrigation scheme

dc.contributor.authorAsten, Piet J.A. van
dc.contributor.authorBodegom, P. van
dc.contributor.authorMulder, L.
dc.contributor.authorKropff, Martin
dc.date.accessioned2019-12-04T11:19:03Z
dc.date.available2019-12-04T11:19:03Z
dc.date.issued2005
dc.identifier.citationVan Asten, P., Van Bodegom, P., Mulder, L. & Kropff, M. (2005). Effect of straw application on rice yields and nutrient availability on an alkaline and a pH-neutral soil in a Sahelian irrigation scheme. Nutrient Cycling in Agroecosystems, 72(3), 255-266.
dc.identifier.issn1385-1314
dc.identifier.urihttps://hdl.handle.net/20.500.12478/3384
dc.description.abstractLike elsewhere in the Sahel, actual rice yields (3–5 t ha−1) are far below yield potential (±8 t ha−1) in an irrigation scheme in central southern Mauritania. Earlier studies showed that yields are especially low on alkaline soils due to N and P deficiency. We investigated the potential of rice straw application as a mean to improve yields and fertilizer efficiency on an alkaline soil (pH 8.2) and a pH-neutral soil (pH 6.2). Application of 5 t straw ha−1 increased yields by 1.1 t ha−1 on average, independent of soil type and fertilizer dose. Contrary to our study, similar studies in Asia showed little short-term effects of straw on yield and N uptake. Straw application improved N availability, but not P availability. The improved N availability was attributed to N mineralized from the straw, from increased mineralization of soil organic matter (SOM) with a low C:N ratio (< 7.2) and from increased mineral fertilizer N (urea) recovery efficiency. We deduced that improved N fertilizer recovery upon straw application was due to reduced nitrification–denitrification losses. On the alkaline soil, volatilization was important, but that process seemed unaffected by straw application. We hypothesize that the positive effects of straw application at our study site are due to low soil C content (< 43 g kg−1) and low C:N ratio compared to most lowland rice soils in Asia.
dc.language.isoen
dc.subjectCrop Residue Management
dc.subjectN Availability
dc.subjectNitrification Denitrification
dc.subjectOryza Sativa L.
dc.subjectP Availability
dc.subjectVolatilization
dc.titleEffect of staw application on rice yields and nutrient availability on an alkaline and a pHneutral soil in a Sahelian irrigation scheme
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationAfrica Rice Center
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationWageningen University and Research Centre
cg.contributor.affiliationInstitute of Ecological Science, Netherlands
cg.coverage.regionAfrica
cg.coverage.regionAcp
cg.coverage.regionWest Africa
cg.coverage.regionEurope
cg.coverage.countrySenegal
cg.coverage.countryNetherlands
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectNutrition
cg.iitasubjectHandling, Transport, Storage And Protection Of Agricultural Products
cg.iitasubjectDisease Control
cg.iitasubjectIntegrated Soil Fertility Management
cg.iitasubjectNatural Resource Management
cg.iitasubjectCrop Husbandry
cg.iitasubjectPests Of Plants
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Diseases
cg.iitasubjectPlant Production
cg.iitasubjectFood Security
cg.iitasubjectAgribusiness
cg.iitasubjectSmallholder Farmers
cg.accessibilitystatusLimited Access
local.dspaceid95058
cg.identifier.doihttps://dx.doi.org/10.1007/s10705-005-3108-z


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