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A laboratory incubation experiment with 15N labeled root and leaf residues of 3 agroforestry species (Leucaena leucocephala, Dactyladenia harto'i and Flemingia macrophylla) was conducted under controlled conditions (25 °C) for 56 days to quantify residue C and N mineralization and its relationshi...


Vanlauwe, BernardNwoke, O.C.Sanginga, N.Merckx, R.[Impact of residue quality on the C and N mineralization of leaf and root residues of three agroforestry species]Impact of residue quality on the C and N mineralization of leaf and root residues of three agroforestry species

Appropriate 15N-labeling methods are crucial for estimating N2-fixation in trees used in agroforestry systems. A 4-year field experiment was conducted on an Alfisol in Southwestern Nigeria to compare the estimates of Na fixed in Leucaena leucocephala, using two non-N2-fixing leguminous trees, Sen...


Sanginga, N.Danso, S.K.A.Zapata, F.[Field measurements of nitrogen fixation in leguminous trees used in agroforestry systems: influence of 15Nlabelling approaches and reference trees]Field measurements of nitrogen fixation in leguminous trees used in agroforestry systems: influence of 15Nlabelling approaches and reference trees

Yields under alley cropping might be improved if the most limiting nutrients not adequately supplied or cycled by the leaves could be added as an inorganic fertilizer supplement. Three historic leaf management strategies had been in effect for 3 years in a Leucaena leucocephala alley cropping tri...


Jones, R.B.Wendt, W.Bunderson, W.T.Itimu, O.A.[Leucaena + maize alley cropping in Malawi: Part 1: Effects of N, P, and leaf application on maize yields and soil properties]Leucaena + maize alley cropping in Malawi: Part 1: Effects of N, P, and leaf application on maize yields and soil properties

In order to determine how dependent a woody legume can be upon potential N sources, the time course of N2 fixation and N absorption was studied on Gliricidia sepium cv. ILG50, Leucaena leucocephala cv. K28, and Albizia lebbeck in a screenhouse for 16 months using Senna siamea as a reference tree....


Kadiata, B.D.Mulomgoy, K.Isirima, N.O.[Time course of biological nitrogen fixation, nitrogen absorption and biomass accumulation in three woody legumes]Time course of biological nitrogen fixation, nitrogen absorption and biomass accumulation in three woody legumes

Pot experiments were carried out to assess the nutrient availability of earthworm casts (wormcasts) of Hyperiodrilus africanus that were collected from plots of Dactyladenia barteri, Leucaena leucocephala and Treculia africana grown on an Alfisol (Oxic paleustalf) as affected by drying and grindi...


Kang, B.T.Ojo, A.[Nutrient availability of earthworm casts collected from under selected woody agroforestry species]Nutrient availability of earthworm casts collected from under selected woody agroforestry species

The effect of pruning on the dynamics of N release in the root zone of Albizia lebbeck and Leucaena leucocephala was studied using potted soil and minilysimeters with presterilized sand-medium supplied with Nfree nutrient solution. Plants were pruned twice at 11 and 13 months and leachates were c...


Kadiata, B.D.Mulongoy, K.Mambani, B.[Pruning effect on nitrogen nutrient release in the root zone of Albizia lebbeck and Leucaena leucocephala]Pruning effect on nitrogen nutrient release in the root zone of Albizia lebbeck and Leucaena leucocephala

Field studies carried out in a forest transition site on a tropical Alfisol in southwestern Nigeria, show that shading by gliricidia (Gliricidia sepium (Jacq.) Steud) and leucaena (Leucaena leucocephala (Lam.) de Wit) hedgerow species reduced density of speargrass (Imperata cylindrica (L.) Raeusc...


Anoka, U.A.Akobundu, I.O.Okonkwo S.N.C.[Effects of Gliricidia sepium (Jacq) Steud and Leucaena leucocephala (Lam.) de Wit on growth and develoment of Imperata cylindrica (L.) Reuschel]Effects of Gliricidia sepium (Jacq) Steud and Leucaena leucocephala (Lam.) de Wit on growth and develoment of Imperata cylindrica (L.) Reuschel

Effects of hedgerow species on surface soil physical properties were studied in an on-going trial established since 1981 on an Oxic Paleustalf in southwestern Nigeria. The experimental treatments were Leucaena leucocephala, Gliricidia sepium, Alchornea cordifolia and Acioa barterii hedgerows plan...


Hulugalle, N.R.Kang, B.T.[Effect of hedgerow species in alley cropping systems on surface soil physical properties of an Oxic Paleustalf in southwestern Nigeria]Effect of hedgerow species in alley cropping systems on surface soil physical properties of an Oxic Paleustalf in southwestern Nigeria

Seedlings of Acacia auriculiformis A. Cunn. ex. Benth., Albizia lebbeck (L.) Benth., Gliricidia sepium (Jac.) Walp and Leucaena leucocephala (Lam.) de Wit. were inoculated with an ectomycorrhizal (Boletus suillus (L. ex. Fr.) or indigenous vesicular-arbuscular mycorrhizal (VAM) fungi in a low P s...


Osonubi, O.Mulongoy, K.Awotoye, O.O.Atayese, M.O.Okali, D.U.U.[Effects of ectomycorrhizal and vesculararbuscular mycorrhizal fungi on drought tolerance of four leguminous woody seedlings]Effects of ectomycorrhizal and vesculararbuscular mycorrhizal fungi on drought tolerance of four leguminous woody seedlings

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

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