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

The 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 t...

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Veröffentlicht in:	Plant and soil 2005-02, Vol.269 (1-2), p.285-296
Hauptverfasser:	Vanlauwe, B, Aihou, K, Tossah, B.K, Diels, J, Sanginga, N, Merckx, R
Format:	Artikel
Sprache:	eng
Schlagworte:	Acid soils Agricultural soils Agroforestry Agronomy. Soil science and plant productions Alley cropping ash Biological and medical sciences Cation exchange Cations Chemical, physicochemical, biochemical and biological properties Cropping systems Dry matter Fundamental and applied biological sciences. Psychology General agronomy. Plant production Gliricidia sepium Leaching Leucaena Leucaena leucocephala Mineral components. Ionic and exchange properties Organic soils Physics, chemistry, biochemistry and biology of agricultural and forest soils Plant species Pruning Savanna soils Savannahs Senna siamea soil depth Soil fertility soil nutrients Soil organic matter soil pH Soil science Soil-plant relationships. Soil fertility Soil-plant relationships. Soil fertility. Fertilization. Amendments Subsoil Subsoils Topsoil Trees Tropical soils
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