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Investigates the effects of improved surface drainage on the productivity of Vertisols in a wheat-and-chickpea cropping trial conducted in 1987 at ILCA;s Debre Zeit research site in the Ethiopian highlands. Chickpea plots were subjected to four irrigation treatments, viz, no irrigation, irrigatio...


Astatke, A.Jutzi, S.C.Tedla, A.[Sequential cropping of Vertisols in the Ethiopian highlands using a broadbed-and-furrow system]Sequential cropping of Vertisols in the Ethiopian highlands using a broadbed-and-furrow system

Reports on the Nitrogen contribution of one forage and three grain legumes, viz, vetch (Vicia villosa), wheat, faba beans, peas & lentils, to a subsequent maize crop in the Ethiopian highlands.


Haque, I.Jutzi, S.C.[Contribution en azote de quatre legumineuses a la culture de mais]Contribution en azote de quatre legumineuses a la culture de mais

Reports on the Nitrogen contribution of one forage and three grain legumes, viz, vetch (Vicia villosa), wheat, faba beans, peas & lentils, to a subsequent maize crop in the Ethiopian highlands.


Haque, I.Jutzi, S.C.[Nitrogen contribution of four legumes to a subsequent maize crop]Nitrogen contribution of four legumes to a subsequent maize crop

Leaves of nine agroforestry tree species (Grevillea robusta. Erythrina abyssinica, Gliricidia sepium, Albizia schimperiana, Acacia nilotica, Acacia polyacantha, Leucaena leucocephala, Leucaena pallida and Entada abyssinica) were compared in a glasshouse incubation experiment under natural tempera...


Anthofer, J.Hanson, JeanJutzi, S.C.[Nitrogen mineralization pattern of agroforestry tree leaves under tropical highland conditions]Nitrogen mineralization pattern of agroforestry tree leaves under tropical highland conditions

Reports on research activities carried out by ILCA's highland programme to devise an appropriate animal feed production strategy for small scale farmeres in the Ethiopian highlands. Gives a critical analysis of the available sources of animal feed, such as, roughages from native pasture, browse a...


Jutzi, S.C.Haque, I.Tedla, A.[The production of animal feed in the Ethiopian highlands: Potentials and limitations]The production of animal feed in the Ethiopian highlands: Potentials and limitations

Reports a concerted interinstitutional attempt to generalize the use of the available draught animal power for the construction of more effective soil surface drainage. The hypothesis is that the relatively high productive potential of the Ethiopian highland vertisols, particularly in high-rainfa...


Jutzi, S.C.Mohamed-Saleem, M.A.[Improving productivity on highland Vertisols: The oxen-drawn broadbed maker]Improving productivity on highland Vertisols: The oxen-drawn broadbed maker

Presents and discusses the effects of animal power use for improved soil surface drainage on food and feed production on the vertisols of the Ethiopian highlands. Examines the on-farm technology validation programme at ILCA; describes crop/livestock interactions in these vertisol areas; highlight...


Asamenew, G.Jutzi, S.C.Tedla, A.McIntire, John M.Ikavalko, E.[Improved draught power use for increased food and feed production on Ethiopian highland vertisols]Improved draught power use for increased food and feed production on Ethiopian highland vertisols

Discusses intermediate technology for increased food and feed production from deep black clay soils (vertisols) in the Ethiopian highlands. Presents examples of improved soil/water/nutrient management on vertisols discussing tillage and animal powered surface drainage and its effect on crop yield...


Jutzi, S.C.Asamenew, G.Tedla, A.Astatke, A.[Intermediate technology for increased food and feed production from deep black clay soils in the Ethiopian highlands]Intermediate technology for increased food and feed production from deep black clay soils in the Ethiopian highlands

Outlines an economic evaluation of an improved surface drainage technology, using the broad-bed-maker (BBM) on-farm in four different vertisol areas of the Ethiopian highlands. Presents data on crops and number of areas covered for the on-farm drainage technology, on cost structure of the BBM, an...


Asamenew, G.Jutzi, S.C.Tedla, A.McIntire, John M.[Economic evaluation of improved vertisol drainage for food crop production in the Ethiopian highlands]Economic evaluation of improved vertisol drainage for food crop production in the Ethiopian highlands

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