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Journal Article 1999

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

The majority of soils in Africa are P-deficient, but the high cost of conventional, water-soluble P fertilisers limits their use by resource-poor farmers. Rockphosphates are a low-cost alternative. The relative agronomic effectiveness of unacidulated (RP), 25 percent partially acidulated (PARP25)...

Enlace original: https://cgspace.cgiar.org/handle/10568/27815

Investigación en Agricultura
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Haque, I. ,  Lupwayi, N.Z. ,  Ssali, H. ,  [Agronomic effectiveness of unacidulated and partially acidulated Minjingu rockphosphates on Stylosanthes guianensis] ,  Agronomic effectiveness of unacidulated and partially acidulated Minjingu rockphosphates on Stylosanthes guianensis
Journal Article 1994

Autor: Tedla, A. Lupwayi, N.Z. Regassa, H.

An on farm tiral, in which a wheat-clover mixed cropping treatment was compared to an unfertilized (control) and N-fertilized (23 kg N ha-1) pure wheat treatments, was conducted at Ginchi (2200 metres above sea level (masl) and Deneba (2600 masl) in the Ethiopian highlands. The total crop residue...

Enlace original: https://cgspace.cgiar.org/handle/10568/29603

Investigación en Agricultura
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Tedla, A. ,  Lupwayi, N.Z. ,  Regassa, H. ,  [Cereal-forage legume mixed cropping systems in the Ethiopian highlands] ,  Cereal-forage legume mixed cropping systems in the Ethiopian highlands
Journal Article 1999

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

Most soils in sub-Saharan Africa are P deficient, but the high cost of water-soluble P fertilizers limits the use of P fertilizers by resource-poor farmers. A low-cost alternative is to apply phosphate rocks. We evaluated the effectiveness of unacidulated (PR), 25 percent partially acidulated (PA...

Enlace original: https://cgspace.cgiar.org/handle/10568/28536

Investigación en Agricultura
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Haque, I. ,  Lupwayi, N.Z. ,  Ssali, H. ,  [Agronomic evaluation of unacidulated and partially acidulated Minjingu and Chilembwe phosphate rocks for clover production in Ethiopia] ,  Agronomic evaluation of unacidulated and partially acidulated Minjingu and Chilembwe phosphate rocks for clover production in Ethiopia
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.

Although the majority of soils in Africa are P deficient, the high cost of conventional water-soluble P fertilizers limits their use by resource-poor farmers. Rockphosphates are a low-cost alternative. The effect of Egyptian rockphosphate (ERP) from two sources, applied at 50 kg P ha-1, on annual...

Enlace original: https://cgspace.cgiar.org/handle/10568/29704

Investigación en Agricultura
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Haque, I. ,  Lupwayi, N.Z. ,  [Responses of clover and desmodium to Egyptian rockphosphate in Ethiopia] ,  Responses of clover and desmodium to Egyptian rockphosphate in Ethiopia
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
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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
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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
Journal Article 2000

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

In most small-scale farms in sub-Saharan Africa, net negative balances of nutrients result when nutrients are removed from the farm by harvested crops, because farmers cannot afford inorganic fertilizers. A key resource that could be useful in reversing this trends is manure from livestock. The N...

Enlace original: https://cgspace.cgiar.org/handle/10568/30016

Investigación en Agricultura
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Lupwayi, N.Z. ,  Girma, M. ,  Haque, I. ,  [Plant nutrient contents of cattle manures from small-scale farms and experimental stations in the Ethiopian highlands] ,  Plant nutrient contents of cattle manures from small-scale farms and experimental stations in the Ethiopian highlands

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