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The decline of soil organic matter (SOM) and its associated fertility is one of the most important constraints to enhanced crop productivity in sub-Saharan Africa. Integrated soil fertility management recognizes the potential benefits of the combined use of organic residue and mineral fertilizer ...


Gentile, RVanlauwe, BernardChivenge, P.P.Six, Johan[Trade-offs between the short and long term effects of residue quality on soil C and N dynamics]Trade-offs between the short and long term effects of residue quality on soil C and N dynamics

Promiscuous soyabean varieties have potential to contribute significantly to income generation, food security and soil N budgets on smallholder farms. One of the major factors limiting this potential is farmers preference to allocate nutrient resources to food security cereal crops on the most f...


Zingore, ShamieMurwira, HKDelve, Robert J.Giller, Ken E.[Variable grain legume yields, responses to phosphorus and rotational effects on maize across soil fertility gradients on African smallholder farms]Variable grain legume yields, responses to phosphorus and rotational effects on maize across soil fertility gradients on African smallholder farms

Soil carbon distribution with depth, stable carbon isotope ratios in soil organic matter and their changes as a consequence of the presence of legume were studied in three 12-year-old tropical pastures (grass alone Brachiaria decumbens (C4), legume alone Pueraria phaseoloides (C3) and grass + l...


Rao, Idupulapati M.Ayarza, Miguel AngelThomas, Richard J.[The use of carbon isotope ratios to evaluate legume contribution to soil enhancement in tropical pastures]The use of carbon isotope ratios to evaluate legume contribution to soil enhancement in tropical pastures

Acacia senegal, an important leguminous tree in arid and semi-arid environments, has shown promise as a multipurpose species, including gum production and soil fertility improvement, linked with N2-fixation capabilities. Of particular interest are ontogenetic and edaphic effects on A. senegal per...


Isaac, M.E.Harmand, JMLesueur, DidierLelon, J[Tree age and soil phosphorus conditions influence N2-fixation rates and soil N dynamics in natural populations of Acacia senegal]Tree age and soil phosphorus conditions influence N2-fixation rates and soil N dynamics in natural populations of Acacia senegal
Salinas, JGCastilla, Carlos E.Gualdron, R[Requerimientos de micronutrimentos por algunas leguminosas forrajeras tropicales en los Llanos Orientales de Colombia]Requerimientos de micronutrimentos por algunas leguminosas forrajeras tropicales en los Llanos Orientales de Colombia
Salinas, JG[Oxisoles y ultisoles de Colombia y Latinoamerica: Caracteristicas diagnosticas implicadas en su uso y manejo]Oxisoles y ultisoles de Colombia y Latinoamerica: Caracteristicas diagnosticas implicadas en su uso y manejo

Different fields within a farm have been observed to have different soil fertility status and this may affect the response of a maize crop to applied N, P, and K fertiliser. A limiting nutrient trial was carried out at six farms each, in three districts of Western Kenya. In each of the farms, the...


Vanlauwe, BernardTittonell, Pablo A.Mukulama, J[Within-farm soil fertility gradients affect response of maize to fertilizer application in Western Kenya]Within-farm soil fertility gradients affect response of maize to fertilizer application in Western Kenya

Se estudió el cambio en el contenido nutricional de los tallos de yuca ocasionado por diferentes niveles de fertilización al suelo y el efecto de las estacas obtenidas de esos tallos sobre el cultivo subsiguiente. Los 9 niveles nutricionales del suelo incidieron en la altura y vigor de las planta...


López Molina, J.El-Sharkawy, Mabrouk A.López, Y.[Fertilidad del suelo y calidad nutricional de estacas de yuca (Manihot esculenta Crantz)]Fertilidad del suelo y calidad nutricional de estacas de yuca (Manihot esculenta Crantz)

The increasing attention paid to local soil knowledge in recent years is the result of a greater recognition that the knowledge of people who have been interacting with their soils for long time can offer many insights about the sustainable management of tropical soils. This paper describes two a...


Barrios, E.Trejo Tercero, M.T.[Implications of local soil knowledge for integrated soil management in Latin America]Implications of local soil knowledge for integrated soil management in Latin America

To guide soil fertility investment programmes in sub-Saharan Africa, better understanding is needed of the relative importance of soil and crop management factors in determining smallholder crop yields and yield variability. Spatial variability in crop yields within farms is strongly influenced b...


Tittonell, Pablo A.Shepherd, Keith D.Vanlauwe, BernardGiller, Ken E.[Unravelling the effects of soil and crop management on maize productivity in smallholder agricultural systems of western Kenya : An application of classification and regression tree analysis]Unravelling the effects of soil and crop management on maize productivity in smallholder agricultural systems of western Kenya : An application of classification and regression tree analysis

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