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Determines the status of the different forms of potassium (K) in relation to some soil characteristics and the extent of K fixation in 32 Ethiopian soils.


Mamo, T.Haque, I.[Potassium status of some Ethiopian soils]Potassium status of some Ethiopian soils

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...


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

A study conducted to develop a classification for Ethiopian clovers based on the performance and phosphorus requirement which has potential for selecting accessions from the rest of the ILCA germplasm suitable for different levels of soil The effects of different P levels on the growth and N and ...


Mugwira, L.M.Haque, I.[Variability in the growth and mineral nutrition of African clovers]Variability in the growth and mineral nutrition of African clovers

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...


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

Alfisols, Vertisols, Inceptisols, Aridisols, Mollisols, and Entisols were sampled (0-30 cm) from 32 locations across Ethiopia. The soils were analyzed for copper (Cu), zinc (Zn), manganese (Mn), and iron (Fe) contents using 0.005 M diethylene triamine pentaacetic acid (DTPA), 0.05 M hydrochloric ...


Haque, I.Lupwayi, N.Z.Tadesse, T.[Soil micronutrient contents and relation to other soil properties in Ethiopia]Soil micronutrient contents and relation to other soil properties in Ethiopia

Asesses the role of Vesicular Arbuscular Mycorrhizal fungus in Lucerne mineral nutrition, and the response of phosphate fertilization to Lucerne.


Mamo, T.Haque, I.[Response of lucerne (Medicago sativa) to phosphate fertilization and inoculation with vesicular arbuscular mycorrhizal fungus in a P-deficient Vertisol]Response of lucerne (Medicago sativa) to phosphate fertilization and inoculation with vesicular arbuscular mycorrhizal fungus in a P-deficient Vertisol

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 ...


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

This paper reports on studies of Faidherbia albida trees and their effects on some properties of vertisols in the Ethiopian highlands. The study was carried at the experiment station of ILCA at Debre Zeit with 850 mm rainfall and at an altitude of 1850 m. Studies on the lateral and vertical influ...


Kamara, C.S.Haque, I.[Faidherbia albida and its effects on Ethiopian highland Vertisols]Faidherbia albida and its effects on Ethiopian highland Vertisols

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