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Journal Article 1998

Autor: Haque, I. Lupwayi, N.Z. Ssali, H.

Phosphorus (P) is required to improve soil fertility for food and feed produciton in sub-Saharan Africa, but the high cost of conventional, water-soluble P fertilizers limits their use by resource-poor farmers. Rockphosphates are a low-cost alternative. The effectiveness, in terms of seed product...

Enlace original: https://cgspace.cgiar.org/handle/10568/28873

Investigación en Agricultura
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Haque, I. ,  Lupwayi, N.Z. ,  Ssali, H. ,  [Agronomic evaluation of unacidulated and partially acidulated Chilembwe rockphosphates for clover seed production] ,  Agronomic evaluation of unacidulated and partially acidulated Chilembwe rockphosphates for clover seed production
Journal Article 1999

Autor: Lupwayi, N.Z. Haque, I.

A litter bag technique was used to study the decomposition and release of N, P, K, Ca and Mg from Leucaena leucocephala and L. pallida prunings and cattle manure in a hedgerow intercropping trial conducted in the Ethiopian highlands. Hedgerow inter-cropping (also called alley cropping or alley fa...

Enlace original: https://cgspace.cgiar.org/handle/10568/30101

Investigación en Agricultura
Enlace permanente
Lupwayi, N.Z. ,  Haque, I. ,  [Leucaena hedgerow intercropping and cattle manure application in the Ethiopian highlands. I. Decomposition and nutrient release] ,  Leucaena hedgerow intercropping and cattle manure application in the Ethiopian highlands. I. Decomposition and nutrient release
Journal Article 1998

Autor: Lupwayi, N.Z. Haque, I.

The N.P.K. Ca and Mg release patterns of the leaves of four accessions of Sesbania species and two accessions of Leucaena species were evaluated in a 5-week laboratory incubation. Leaves of these leguminous trees, applied at an equivalent rate of 3 t dm ha-1, were significant sources of N, K and ...

Enlace original: https://cgspace.cgiar.org/handle/10568/29639

Investigación en Agricultura
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Lupwayi, N.Z. ,  Haque, I. ,  [Mineralization of N, P, K, Ca and Mg from sesbania and leucaena leaves varying in chemical composition] ,  Mineralization of N, P, K, Ca and Mg from sesbania and leucaena leaves varying in chemical composition
Journal Article 1996

Autor: Haque, I. Lupwayi, N.Z. Luyindula, N.

Field experiments were conducted to study the effects of inoculation and application of P on the productivity of Desmodium intortum on an Ultisol and Sesbania sesban on a Vertisol, Alfisol and Ultisol in the Ethiopian highlands. On the Vetisol, the effect of drainage by using broad-bed-and-furrow...

Enlace original: https://cgspace.cgiar.org/handle/10568/28124

Investigación en Agricultura
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Haque, I. ,  Lupwayi, N.Z. ,  Luyindula, N. ,  [Inoculation and phosphorus effects on Desmodium intortum and Sesbania sesban in the Ethiopian highlands] ,  Inoculation and phosphorus effects on Desmodium intortum and Sesbania sesban in the Ethiopian highlands
Journal Article 1997

Autor: Mugwira, L.M. Haque, I. Lupwayi, N.Z. Luyindula, N.

Phosphorus deficiency is the major soil fertility problem limiting forage production in many parts of Africa. The objective of this study was to screen African Trifolium species for dry matter production, nutrient use efficiency and nitrogen fixation potential at different rates of applied Twenty...

Enlace original: https://cgspace.cgiar.org/handle/10568/28127

Investigación en Agricultura
Enlace permanente
Mugwira, L.M. ,  Haque, I. ,  Lupwayi, N.Z. ,  Luyindula, N. ,  [Evaluation of phosphorus uptake and use efficiency and nitrogen fixation potential by African clovers] ,  Evaluation of phosphorus uptake and use efficiency and nitrogen fixation potential by African clovers
Journal Article 1999

Autor: Lupwayi, N.Z. Haque, I. Saka, A.R. Siaw, D.E.K.A.

The effects of Leucaena leucocephala and L. pallida prunings and cattle manure on maize nutrient uptake and yield were investigated in a hedgerow inter-cropping trial in the Ethiopian highlands. Hedgerow inter-cropping (also called alley cropping) is an agroforestry system in which trees are grow...

Enlace original: https://cgspace.cgiar.org/handle/10568/30100

Investigación en Agricultura
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Lupwayi, N.Z. ,  Haque, I. ,  Saka, A.R. ,  Siaw, D.E.K.A. ,  [Leucaena hedgerow intercropping and cattle manure application in the Ethiopian highlands. II. Maize yields and nutrient uptake] ,  Leucaena hedgerow intercropping and cattle manure application in the Ethiopian highlands. II. Maize yields and nutrient uptake
Journal Article 1999

Autor: Haque, I. Lupwayi, N.Z.

Poor drainage of Vertisols and nitrogen (N) and phosphorus (P) deficiencies are some if the major constraints to food and feed production in the Ethiopian highlands. The effects of soil drainage and P supply on N fixation by annual trifolium species and their residual value to succeeding crops wa...

Enlace original: https://cgspace.cgiar.org/handle/10568/28370

Investigación en Agricultura
Enlace permanente
Haque, I. ,  Lupwayi, N.Z. ,  [Landform and phosphorus effects on nitrogen fixed by annual clovers and its contribution to succeeding cereals in the Ethiopian highlands] ,  Landform and phosphorus effects on nitrogen fixed by annual clovers and its contribution to succeeding cereals in the Ethiopian highlands
Journal Article 1999

Autor: Lupwayi, N.Z. Haque, I.

Balances between nutrients applied or mineralized and nutrients removed in maize grain and stover were calculated in a hedgerow intercropping experiment in which Leucaena leucocephala and L. pallida prunings and cattle manure were applied. Hedgerow intercropping (also called alley cropping) is an...

Enlace original: https://cgspace.cgiar.org/handle/10568/30099

Investigación en Agricultura
Enlace permanente
Lupwayi, N.Z. ,  Haque, I. ,  [Leucaena hedgerow intercropping and cattle manure application in the Ethiopian highlands. III. Nutrient balances] ,  Leucaena hedgerow intercropping and cattle manure application in the Ethiopian highlands. III. Nutrient balances

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