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Presents the results of investigations on the relative distribution of the various phosphorus forms, fixing capacity and status of some Ethiopian highland Vertisols.


Mamo, T.Haque, I.Kamara, C.S.[Phosphorus status of some Ethiopian highland Vertisols]Phosphorus status of some Ethiopian highland Vertisols

Vertisols and soils with vertic properties are an important soil group in the Ethiopian highlands. Poor drainage, soil, water and nutrient erosion are the most serious problems on highland Vertisols. Due to their high moisture- storage capacity, they have high production potential and this potent...


Haque, I.Abebe, M.Mamo, T.Dibabe, A.[Nutrient management]Nutrient management
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

Eight chemical methods were employed for estimating the available P in 32 Ethiopian soils using Phasey bean (Macroptilium lathyroides c.Murray) as a test crop grown in small pots in a glasshouse and the soil test values then correlated with plant characteristics. Olsens' method gave the highest c...


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

Summarises available information on bulk density and porosity, soil moisture infiltration, N, P and mineralogy. Literature on the phosphorus (P) status of soils, P nutrition of forage legumes and crops, mycorrhizal and P nutrition, species and varietal variation in response to P, P sorption isoth...


Haque, I.Mamo, T.Astatke, A.[Nutrients and soil surface management on highland vertisols of Ethiopia]Nutrients and soil surface management on highland vertisols of Ethiopia

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