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Traditionally, crop production in sub-Saharan Africa (SSA) depends primarily on mining soil nutrients. Integrated Soil Fertility Management (ISFM) is an approach for intensifying agriculture in SSA that aims at maximizing the agronomic efficiency (AE) of applied nutrient inputs. ISFM contains the...


Vanlauwe, BernardKihara, JobChivenge, P.P.Pypers, PieterCoe, R.Six, Johan[Agronomic use efficiency of N fertilizer in maize-based systems in sub-Saharan Africa within the context of integrated soil fertility management]Agronomic use efficiency of N fertilizer in maize-based systems in sub-Saharan Africa within the context of integrated soil fertility management

Major challenges for combined use of organic and mineral nutrient sources in smallholder agriculture include variable type and quality of the resources, their limited availability, timing of their relative application and the proportions at which the two should be combined. Short-term nutrient su...


Mtambanengwe, F.Mapfumo, PaulVanlauwe, Bernard[Comparative short-term effects of different quality organic resources on maize productivity under two different environments in Zimbabwe]Comparative short-term effects of different quality organic resources on maize productivity under two different environments in Zimbabwe

Aggregation and stabilization of soil organic C (SOC) and N are highly dependent on soil texture and addition of organic resources (ORs). While OR quality may influence SOC and N stabilization within aggregates, the simultaneous addition of N-fertilizers may enhance OR decomposition resulting in ...


Chivenge, P.P.Vanlauwe, BernardGentile, RSix, Johan[Comparison of organic versus mineral resource effects on short-term aggregate carbon and nitrogen dynamics in a sandy soil versus a fine textured soil]Comparison of organic versus mineral resource effects on short-term aggregate carbon and nitrogen dynamics in a sandy soil versus a fine textured soil

Background and Aims: The forage grass Brachiaria humidicola (Bh) has been shown to reduce soil microbial nitrification. However, it is not known if biological nitrification inhibition (BNI) also has an effect on nitrogen (N) cycling during cultivation of subsequent crops. Therefore, the objective...


Karwat, HannesMoreta, DaniloArango, JacoboNúñez, JonathanRao, Idupulapati M.Rincón, ÁlvaroRasche, FrankCadisch, Georg[Residual effect of BNI by Brachiaria humidicola pasture on nitrogen recovery and grain yield of subsequent maize]Residual effect of BNI by Brachiaria humidicola pasture on nitrogen recovery and grain yield of subsequent maize
Chivenge, P.P.Vanlauwe, BernardGentile, RWangechi, HKMugendi, DNKessel, Chris vanSix, Johan[Organic and mineral input management to enhance crop productivity in Central Kenya]Organic and mineral input management to enhance crop productivity in Central Kenya

The application of nitrogen in a soil under agricultural production is subject to several pathways including de-nitrification, leaching and recovery by an annual crop. This is as well greatly influenced by the management practices, nitrogen source and soil conditions. The main objective of this s...


Kimetu, J.M.Mugendi, DNBationo, B. AndréPalm, C.A.Mutuo, PKKihara, JobNandwa, SMGiller, Ken E.[Partial balance of nitrogen in a maize cropping systems in humic nitisol of Central Kenya]Partial balance of nitrogen in a maize cropping systems in humic nitisol of Central Kenya

Organic C inputs and their rate of stabilization influence C sequestration and nutrient cycling in soils. This study was undertaken to explore the influence of the combined application of different quality organic resources (ORs) with N fertilizers on the link between aggregate dynamics and soil ...


Chivenge, P.P.Vanlauwe, BernardGentile, RSix, Johan[Organic resource quality influences short-term aggregate dynamics and soil organic carbon and nitrogen accumulation]Organic resource quality influences short-term aggregate dynamics and soil organic carbon and nitrogen accumulation

Nitrogen deficiency severely limits production of the bean maize association grown by small-scale farmers in upland Peru. Sixty-four bean Rhizobium isolates were evaluated for induction of a plant growth response in pots of soil from the area and 14 of the most promising strains of these were tes...


Pineda, PKipe-Nolt, Judith A.Rojas Alvarado, E[Rhizobium inoculation increases of bean and maize yields in intercrops on farms in the Peruvian Sierra]Rhizobium inoculation increases of bean and maize yields in intercrops on farms in the Peruvian Sierra
Friesen, Dennis K.Thomas, Richard J.Rivera, M.Asakawa, N.Bowen, W.[Dinámicas de nitrógeno en monocultivos y cultivos en rotación en oxisoles de los Llanos Orientales de Colombia]Dinámicas de nitrógeno en monocultivos y cultivos en rotación en oxisoles de los Llanos Orientales de Colombia

Crop simulation models have been used successfully to evaluate many systems and the impact of change on these systems, e.g. for climatic risk and the use of alternative management options, including the use of nitrogen fertilisers. However, for low input systems in tropical and subtropical region...


Delve, Robert J.Probert, MECobo Borrero, Juan G.Ricaurte Oyola, José JaumerRivera Pena, MBarrios, E.Rao, Idupulapati M.[Simulating phosphorus responses in annual crops using APSIM : Model evaluation on contrasting soil types]Simulating phosphorus responses in annual crops using APSIM : Model evaluation on contrasting soil types

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