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Quantification of the fate of residue N is essential in low-input tropical cropping systems for the development of management practices that optimize N-use efficiency. The recovery of N from 15N-labeled leucaena (Leucaena leucocephala (Lam.) de Wit) and dactyladenia (Dactyladenia barteri (Hook f ...


Vanlauwe, BernardSanginga, N.Merckx, R.[Recovery of leucaena and dactyladenia residue nitrogen15 in alley cropping systems]Recovery of leucaena and dactyladenia residue nitrogen15 in alley cropping systems

Evaluation of soil aggregate stability under managed fallow systems is very relevant in the assessment of their agricultural sustainability. It is also important to identify the parameters that are most responsive to the effects of these fallow systems on aggregate stability. This study was carri...


Salako, F.K.Babalola, O.Hauser, S.Kang, B.T.[Soil macroaggregate stability under different fallow management systems and cropping intensities in southwestern Nigeria]Soil macroaggregate stability under different fallow management systems and cropping intensities in southwestern Nigeria

In tropical cropping systems with few external imputs, efficient management of mineral N derived from added organic residues is essential for the proper functioning of the system. We studied the dynamics of mineral Nitroden (N) in the top 100 cm of soil with a system tensiometers and suction cups...


Vanlauwe, BernardDiels, J.Duchateau, L.Sanginga, N.Merckx, R.[Mineral N dynamics in bare and cropped Leucaena leucocephala and Dactyladenia barteri alley cropping systems after the addition of 15Nlabelled leaf residues]Mineral N dynamics in bare and cropped Leucaena leucocephala and Dactyladenia barteri alley cropping systems after the addition of 15Nlabelled leaf residues

Farmers of rainfed cowpea/groundnut/millet/sorghum cropping systems in Kano, Nigeria, ranked arthropods as the major production constraint in cowpea and groundnut in 1991 and 1992. At least 25% of the farmers also reported severe infestations by Striga gesneroides a parasitic weed of cowpea. Drou...


Bottenberg, H.[Farmers perceptions of crop pests and pest control practices in rainfed cowpea cropping systems in Kano, Nigeria]Farmers perceptions of crop pests and pest control practices in rainfed cowpea cropping systems in Kano, Nigeria

En Ikom, Nigeria del Sudeste, se realizó en el año de 1981/82 un análisis en campo de sistemas de cultivo orientados al cacao en suelos basálticos. El objetivo fue elaborar las principales características del sistema de producción y sus limitaciones. El sistema se realiza en dos grupos de product...


Eshett, E.T.Ay, P.Omueti, J.A.I.Juo, A.S.R.[A cocoabased cropping system on basaltic soils (typic tropohumult) in southeastern Nigeria]A cocoabased cropping system on basaltic soils (typic tropohumult) in southeastern Nigeria

The humid tropics are exposed to an unprecedented modernisation of agriculture involving rapid and mixed land-use changes with contrasted environmental impacts. Afforestation is often mentioned as an unambiguous solution for restoring ecosystem services and enhancing biodiversity. One consequence...


Lacombe, GuillaumeRibolzi, OlivierRouw, Anneke dePierret, A.Latsachak, K.Silvera, N.Dinh, R.P.Orange, D.Janeau, Jean L.Soulileuth, B.Robain, H.Taccoen, A.Sengphaathith, P.Mouche, E.Sengtaheuanghoung, OlothTran Duc, T.Valentin, Christian[Contradictory hydrological impacts of afforestation in the humid tropics evidenced by long-term field monitoring and simulation modelling]Contradictory hydrological impacts of afforestation in the humid tropics evidenced by long-term field monitoring and simulation modelling
Ek, G.A. vanHenriet, J.Blade, S.Singh, B.[Quantitative assessment of traditional cropping systems in the Sudan savanna of northern Nigeria II. Management and productivity of major cropping systems]Quantitative assessment of traditional cropping systems in the Sudan savanna of northern Nigeria II. Management and productivity of major cropping systems
Henriet, J.Ek, G.A. vanBlade, S.Singh, B.[Quantitative assessment of traditional cropping systems in the Sudan savanna of northern Nigeria: III. Importance of trees, shrubs and secondary crops in the cropping systems]Quantitative assessment of traditional cropping systems in the Sudan savanna of northern Nigeria: III. Importance of trees, shrubs and secondary crops in the cropping systems

The recovery of a single application of leucaena (Leucaena leucocephala) leaf N (78 kg N ha−1) in a maize crop, the hedgerow and the top 10 cm soil of a leucaena alley cropping system was measured for 236 d through the use of 15N labeled residues. The leucaena-derived-N (LDN) was followed in the ...


Vanlauwe, BernardSwift, M.J.Merckx, R.[Soil litter dynamics and N use in a leucaena (Leucaena leucocephalaLam. (de Witt)) alley cropping system in southwestern Nigeria]Soil litter dynamics and N use in a leucaena (Leucaena leucocephalaLam. (de Witt)) alley cropping system in southwestern Nigeria

Composite agricultural systems with permanent maize cultivation in the uplands and irrigated rice in the valleys are very common in mountainous southeast Asia. The soil loss and fertility decline of the upland fields is well documented, but little is known about reallocation of these sediments wi...


Slaets, J.I.F.Schmitter, Petra S.Hilger, T.Vien, T.D.Cadisch, Georg[Sediment trap efficiency of paddy fields at the watershed scale in a mountainous catchment in northwest Vietnam]Sediment trap efficiency of paddy fields at the watershed scale in a mountainous catchment in northwest Vietnam

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