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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

Mamo, T. ,  Haque, I. ,  [Phosphorus status of some Ethiopian soils. II. Forms and distribution of inorganic phosphates and their relation to available phosphorus] ,  Phosphorus status of some Ethiopian soils. II. Forms and distribution of inorganic phosphates and their relation to available phosphorus

Nnadi, L.A. ,  Haque, I. ,  [Agronomic effectiveness of rock phosphate in an andept of Ethiopia] ,  Agronomic effectiveness of rock phosphate in an andept of Ethiopia

Nnadi, L.A. ,  Haque, I. ,  Mugwira, L.M. ,  [Phosphorus response and mineral composition of Ethiopian highland Trifolium (clover) species] ,  Phosphorus response and mineral composition of Ethiopian highland Trifolium (clover) species

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

Mamo, T. ,  Haque, I. ,  [Phosphorus status of some Ethiopian soils. III. Evaluation of soil test methods for available phosphorus] ,  Phosphorus status of some Ethiopian soils. III. Evaluation of soil test methods for available phosphorus

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

Mugwira, L.M. ,  Haque, I. ,  [Screening forage and browse legumes germplasm to nutrient stresses: III. Tolerance of Sesbania to aluminium and low phosphorus in soils and nutrient solution] ,  Screening forage and browse legumes germplasm to nutrient stresses: III. Tolerance of Sesbania to aluminium and low phosphorus in soils and nutrient solution

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

Kamara, C.S. ,  Haque, I. ,  [Intercropping maize & forage type cowpeas in the Ethiopian highlands: I. Growth & dry matter yields. II. Soil moisture, soil temperature, solar radiation regimes and water use efficiency] ,  Intercropping maize & forage type cowpeas in the Ethiopian highlands: I. Growth & dry matter yields. II. Soil moisture, soil temperature, solar radiation regimes and water use efficiency