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In cover cropping systems in the tropics with herbaceous legumes, plant residues are expected to supply nitrogen (N) to non-legume crops during decomposition. Field experiments were carried out to (i) determine the effects of residue quality on decomposition and N release patterns of selected pla...


Sanginga, P.Vanlauwe, BernardMerckx, R.Ibewiro, B.[Nitrogen contributions from decomposing cover crop residues to maize in a tropical derived savanna]Nitrogen contributions from decomposing cover crop residues to maize in a tropical derived savanna

Populations of plant parasitic nematodes and their effects on symbiotic nitrogen (N) fixation in herbaceous legumes and on some selected characteristics of other plant species associated with such cover crops were studied. Two legume species [mucuna, Mucuna pruriens (L) DC. var. utilis (Wright) B...


Sanginga, P.Vanlauwe, BernardMerckx, R.Ibewiro, B.[Influence of phytoparasitic nematodes on symbiotic N2 fixation in tropical herbaceous legume cover crops]Influence of phytoparasitic nematodes on symbiotic N2 fixation in tropical herbaceous legume cover crops

Reliable estimates of symbiotically fixed N2 in herbaceous legumes are important in order to determine their role in maintaining or improving N levels in tropical low-external-input farming systems. We have studied the effects of different management systems on the suitability of two non-N2-fixin...


Ibewiro, B.Sanginga, P.Vanlauwe, BernardMerckx, R.[Evaluation of symbiotic dinitrogen inputs of herbaceous legumes into tropical cover crop systems]Evaluation of symbiotic dinitrogen inputs of herbaceous legumes into tropical cover crop systems

The fate of 15N-labeled plant residues from different cover-cropping systems and labeled inorganic N fertilizer in the organic, soil mineral, microbial biomass and soil organic matter (SOM) particle-size fractions was investigated in a sandy Lixisol. Plant residues were from mucuna (legume), labl...


Ibewiro, B.Vanlauwe, BernardSanginga, P.Merckx, R.[Transformations and recovery of residue and fertilizer nitrogen15 in a sandy Lixisol of West Africa]Transformations and recovery of residue and fertilizer nitrogen15 in a sandy Lixisol of West Africa

Sulfur (S) deficiency in soils is increasingly recognized in agricultural systems. The quantification of S mineralization/immobilization processes after incorporation of organic materials into soils is a key factor to predict the availability of S to growing plants. However, immobilization and mi...


Nziguheba, G.Smolders, E.Merckx, R.[The mineralization of sulfur from organic residues measured by inverse isotope dilution]The mineralization of sulfur from organic residues measured by inverse isotope dilution

Phosphorus (P) uptake by plant roots depends on P intensity (I) and P quantity (Q) in the soil. The relative importance of Q and I on P uptake is unknown for soils with large P sorption capacities because of difficulties in determining trace levels of P in the soil solution. We applied a new isot...


Pypers, PieterDelrue, JDiels, J.Smolders, EMerckx, R.[Phosphorus intensity determines short-term P uptake by pigeon pea (Cajanus cajan L.) grown in soils with differing P buffering capacity : Comparison of E- and L-values]Phosphorus intensity determines short-term P uptake by pigeon pea (Cajanus cajan L.) grown in soils with differing P buffering capacity : Comparison of E- and L-values

There are several indications that legumes are capable of accessing sparingly soluble phosphorus (P) in the soil through root-induced processes. We hypothesize that this plant-induced mobilization of P can be demonstrated if the plant accessible P assessed by isotopic dilution ( L-value ) exceeds...


Pypers, PieterLoon, L. vanDiels, J.Abaidoo, R.C.Smolders, EMerckx, R.[Plant-available P for maize and cowpea in P-deficient soils from the Nigerian Northern Guinea savanna : Comparison of E- and L-values]Plant-available P for maize and cowpea in P-deficient soils from the Nigerian Northern Guinea savanna : Comparison of E- and L-values
Vandeplas, IVanlauwe, BernardDriessens, LMerckx, R.Deckers, J.[Reducing labour and input costs in soybean production by smallholder farmers in south-western Kenya]Reducing labour and input costs in soybean production by smallholder farmers in south-western Kenya

Research on agricultural technology adoption generally occurs ex post, after the introduction of a technology. In this paper, the authors use a choice experiment to reveal farmers’ preferences for new agricultural technologies ex ante, before new technologies are developed and introduced. The aut...


Lambrecht, I.Vranken, L.Merckx, R.Vanlauwe, BernardMaertens, M.[Ex ante appraisal of agricultural research and extension: a choice experiment on climbing beans in Burundi]Ex ante appraisal of agricultural research and extension: a choice experiment on climbing beans in Burundi

Intensification of smallholder agriculture in sub-Saharan Africa is necessary to address rural poverty and natural resource degradation. Integrated soil fertility management (ISFM) is a means to enhance crop productivity while maximizing the agronomic efficiency (AE) of applied inputs, and can th...


Vanlauwe, BernardDescheemaeker, KatrienGiller, Ken E.Huising, JeroenMerckx, R.Nziguheba, GeneroseZingore, Shamie[Integrated soil fertility management in sub-Saharan Africa: unravelling local adaptation Integrated soil fertility management in sub-Saharan Africa: unravelling local adaptation]Integrated soil fertility management in sub-Saharan Africa: unravelling local adaptation Integrated soil fertility management in sub-Saharan Africa: unravelling local adaptation

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