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Senna siamea trees recycle Ca from a Carich subsoil and increase the topsoil pH in agroforestry systems in the West African derived savanna zone

dc.contributor.authorVanlauwe, Bernard
dc.contributor.authorAihou, K.
dc.contributor.authorTossah, B.
dc.contributor.authorDiels, J.
dc.contributor.authorSanginga, Nteranya
dc.contributor.authorMerckx, R.
dc.date.accessioned2019-12-04T11:18:57Z
dc.date.available2019-12-04T11:18:57Z
dc.date.issued2005
dc.identifier.citationVanlauwe, B., Aihou, K., Tossah, B., Diels, J., Sanginga, N. & Merckx, R. (2005). Senna siamea trees recycle Ca from a Ca-rich subsoil and increase the topsoil pH in agroforestry systems in the West African derived savanna zone. Plant and soil, 269(1-2), 285-296.
dc.identifier.issn0032-079X
dc.identifier.urihttps://hdl.handle.net/20.500.12478/3362
dc.description.abstractThe functioning of trees as a safety-net for capturing nutrients leached beyond the reach of crop roots was evaluated by investigating changes in exchangeable cations (Ca, Mg, and K) and pH in a wide range of medium to long term alley cropping trials in the derived savanna of West Africa, compared to no-tree control plots. Topsoil Ca content, effective cation exchange capacity, and pH were substantially higher under Sennasiamea than under Leucaena leucocephala, Gliricidia sepium, or the no-tree control plots in sites with a Bt horizon rich in exchangeable Ca. This was shown to be largely related to the recovery of Ca from the subsoil under Senna trees. The increase of the Ca content of the topsoil under Senna relative to the no-tree control treatment was related to the total amount of dry matter applied since trial establishment. The lack of increase in Ca accumulation under the other species was related to potential recovery of Ca from the topsoil itself and/or substantial Ca leaching. The accumulation of Ca in the topsoil under Senna had a marked effect on the topsoil pH, the latter increasing significantly compared with the Leucaena, Gliridia, and no-tree control treatments. In conclusion, the current work shows that the functioning of the often hypothesized ‘safety-net’ of trees in a cropping system depends on (i) the tree species and on (ii) the presence of a subsoil of suitable quality, i.e., clay enriched and with high Ca saturation.
dc.description.sponsorshipDirectorate-General for Development Cooperation and Humanitarian Aid, Belgium
dc.language.isoen
dc.subjectGliricidia Sepium
dc.subjectLeucaena Leucocephala
dc.subjectSubsoil
dc.subjectLitterfall Prunings
dc.subjectSoil Ph
dc.subjectSubsoil Ca Content
dc.subjectTopsoil
dc.subjectTrees
dc.subjectBiomass
dc.titleSenna siamea trees recycle Ca from a Carich subsoil and increase the topsoil pH in agroforestry systems in the West African derived savanna zone
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationInternational Center for Tropical Agriculture
cg.contributor.affiliationInstitut National des Recherches Agricoles du Bénin
cg.contributor.affiliationInstitut Togolais de Recherche Agronomique
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationKatholieke Universiteit Leuven
cg.coverage.regionAfrica
cg.coverage.regionAcp
cg.coverage.regionEast Africa
cg.coverage.regionWest Africa
cg.coverage.regionEurope
cg.coverage.countryKenya
cg.coverage.countryBenin
cg.coverage.countryTogo
cg.coverage.countryNigeria
cg.coverage.countryBelgium
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectSoil Information
cg.iitasubjectSoil Health
cg.iitasubjectIntegrated Soil Fertility Management
cg.iitasubjectFarm Management
cg.iitasubjectAgronomy
cg.iitasubjectSoil Fertility
cg.iitasubjectSoil Surveys And Mapping
cg.accessibilitystatusLimited Access
local.dspaceid95036
cg.identifier.doihttps://dx.doi.org/10.1007/s11104-004-0599-3


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