Cutting and carrying of mulch from established tree plots is an alternative to in situ mulch in agroforestry systems. Through the cut-and-carry method, the undesirable e ects of tree-crop competition characterized by in situ mulching can be avoided. An economic evaluation of the cut-and-carry met...
Kormawa, P.M.
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Kamara, A.Y.
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Jutzi, S.C.
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Sanginga, N.
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[Economic evaluation of using mulch from multipurpose trees in maizebased production systems in southwestern Nigeria]
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Economic evaluation of using mulch from multipurpose trees in maizebased production systems in southwestern Nigeria
It has been difficult to explain the rotation effect based solely on N availability in maize-soybean cropping systems in the moist savanna zone of sub-Saharan Africa. Although arbuscular mycorrhizal fungi (AMF) can contribute to plant growth by reducing stresses resulting from other nutrient defi...
Sanginga, N.
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Carsky, R.J.
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Dashiell, Kenton E.
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[Arbuscular mycorrhizal fungi (AMF) respond to rhizobial inoculation and cropping systems in farmers fields in the Guinea savanna]
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Arbuscular mycorrhizal fungi (AMF) respond to rhizobial inoculation and cropping systems in farmers fields in the Guinea savanna
Leaf extracts and mulch from 14 multipurpose trees were used to test their effects on maize germination, growth and yield. Maize germination was significantly reduced by leaf extracts of all species with increasing extract concentration. The most drastic reductions were caused by Gliricidia sepiu...
Kamara, A.Y.
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Akobundu, I.O.
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Sanginga, N.
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Jutzi, S.C.
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[The effects of mulch from selected multipurpose trees on nitrogen nutrition, growth and yield of maize (Zea mays)]
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The effects of mulch from selected multipurpose trees on nitrogen nutrition, growth and yield of maize (Zea mays)
The 13C natural labeling technique in combination with modeling could potentially be used to analyze SOM changes in long-term experiments involving complex cropping systems such as agroforestry systems. It requires information on quantity and 13C abundance of all plant materials entering the soil...
Diels, J.
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Vanlauwe, Bernard
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Sanginga, N.
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Coolen, E.
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Merckx, R.
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[Temporal variations in plant delta 13C values and implications for using the 13C technique in longterm soil organic matter studies]
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Temporal variations in plant delta 13C values and implications for using the 13C technique in longterm soil organic matter studies
Although the fertility status of soils in the West African moist savanna is generally believed to be low, crop yields on farmers' fields vary widely from virtually nil to values near the potential production. The soil fertility status was evaluated for a number of farmers' fields selected at rand...
Vanlauwe, Bernard
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Diels, J.
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Lyasse, O.
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Aihou, K.
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Iwuafor, E.
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Sanginga, N.
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Merckx, R.
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Deckers, J.
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[Fertility status of soils of the derived savanna and northern guinea savanna benchmarks and response to major plant nutrients, as influenced by soil type and land use management]
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Fertility status of soils of the derived savanna and northern guinea savanna benchmarks and response to major plant nutrients, as influenced by soil type and land use management
Improved cropping systems with in-situ production of organic matter require the input of additional inorganic N to maintain crop production in a sustainable way. For proper management of this fertilizer-N, it is necessary to quantify how the applied fertilizer N is used by the various components ...
Vanlauwe, Bernard
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Sanginga, N.
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Merckx, R.
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[Alley cropping with Senna siamea in southwestern Nigeria: 1 Recovery of 15N labelled urea by the alley cropping system]
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Alley cropping with Senna siamea in southwestern Nigeria: 1 Recovery of 15N labelled urea by the alley cropping system
A litterbag experiment with Leucaena leucocephala and Senna siamea residues collected during four different pruning activities was carried out in no-tree-control and alley cropping plots. Decomposition was followed for 112 days after the respective pruning dates. Other factors studied were “amoun...
Vanlauwe, Bernard
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Sanginga, N.
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Merckx, R.
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[Decomposition of four Leucaena and Senna prunings in alley cropping systems under subhumid tropical conditions: the process and its modifiers]
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Decomposition of four Leucaena and Senna prunings in alley cropping systems under subhumid tropical conditions: the process and its modifiers
Quantification of the movement of residue N through various biologically meaningful soil organic matter (SOM) fractions is essential in low-input tropical cropping systems for the development of management practices aimed at optimizing N-use efficiency. The flow of N derived from 15N-labeled leuc...
Vanlauwe, Bernard
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Sanginga, N.
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Merckx, R.
,
[Soil organic matter dynamics after addition of nitrogen15 labeled leucaena and dactyladenia residues]
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Soil organic matter dynamics after addition of nitrogen15 labeled leucaena and dactyladenia residues
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, Bernard
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Sanginga, N.
,
Merckx, R.
,
[Recovery of leucaena and dactyladenia residue nitrogen15 in alley cropping systems]
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Recovery of leucaena and dactyladenia residue nitrogen15 in alley cropping systems
The moist savanna of West-Africa is characterized by a wide range of climates and soil types. The impact of the biophysical environment on hedgerow N uptake, wood production and maize grain yield was assessed for three years in three alley cropping trials with a selected number of hedgerow specie...
Tossah, B.K.
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Zamba, D.K.
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Vanlauwe, Bernard
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Sanginga, N.
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Lyasse, O.
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Diels, J.
,
Merckx, R.
,
[Alley cropping in the moist savanna of West Africa II. Impact on soil productivity in a northtosouth transect in Togo]
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Alley cropping in the moist savanna of West Africa II. Impact on soil productivity in a northtosouth transect in Togo