Poor drainage of Vertisols in the Ethiopian mid-altitude highlands limits farming operations and cropping in the early rainy season. Thus, traditional crops are grown late in the season on the residual moisture in the dry season when waterlogging is less of a problem. Consequently performance of ...
Tedla, A.
,
Sherington, J.
,
Mohamed-Saleem, M.A.
,
[Integration of forage and food crops grown sequentially on Vertisols under rainfed conditions in the mid-altitude Ethiopian highlands]
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Integration of forage and food crops grown sequentially on Vertisols under rainfed conditions in the mid-altitude Ethiopian highlands
The paper first discusses the need for moving from disciplinary to transdisciplinary research in addressing problems of human development and environmental management. Then the experience of a research project in highland Ethiopia is described. This started with disciplinary research and componen...
Jabbar, M.A.
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Mohamed-Saleem, M.A.
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Li-Pun, H.
,
[Towards transdisciplinarity in technology and resource management research: A project in Ethiopia]
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Towards transdisciplinarity in technology and resource management research: A project in Ethiopia
The impact of grazing on physical properties of Vertisol was studied from 1996 to 2000 in the Ethiopian highlands. The study was conducted at 2 sites with 0-4 and 4-8% slopes at Tero Jemjem watershed in Ginchi, 80 km west of Addis Ababa. The objective of the study was to compare selected soil phy...
Taddese, G.
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Mohamed Saleem, M.A.
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Ayaleneh, W.
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[Effect of livestock grazing on physical properties of a cracking and self-mulching Vertisol]
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Effect of livestock grazing on physical properties of a cracking and self-mulching Vertisol
Animal traction has been an integral part of most agricultural systems in Ethiopia for thousands of years. There is evidence that cattle were first used for ploughing in the latter part of the third millennium BC (Goe and Astatke, 1989). Today, the traditional cattle economy is directed mainly to...
Astatke, A.
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Mohamed-Saleem, M.A.
,
[Draught animal power for land-use intensification in the Ethiopian highlands]
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Draught animal power for land-use intensification in the Ethiopian highlands
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...
Haque, I.
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Lupwayi, N.Z.
,
[Responses of clover and desmodium to Egyptian rockphosphate in Ethiopia]
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Responses of clover and desmodium to Egyptian rockphosphate in Ethiopia
Field studies were conducted between 1987-1989 at sites on Vertisols at different altitudes in Ethiopia to assess the effects of mixtures of clover undersowings on grain, straw yield and the total biomass production of several wheat varieties. Wheat varieties grown at the medium altitude location...
Tedla, A.
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Mamo, T.
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Gebeyehu, G.
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[Integration of forage legumes into cereal cropping systems in Vertisols of the Ethiopian highlands]
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Integration of forage legumes into cereal cropping systems in Vertisols of the Ethiopian highlands
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...
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]
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Landform and phosphorus effects on nitrogen fixed by annual clovers and its contribution to succeeding cereals in the Ethiopian highlands
Se cuantificó la biodiversidad, abundancia y biomasa de la macrofauna en diferentes usos del suelo utilizando la metodología propuesta por el programa Tropical Soil Biology and Fertility (TS.B.F.).
La mayor biodiversidad la presento el cacaotal (47 u.-t.), mientras que el tratamiento con mulch ti...
Marin, EP
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Feijoo Martínez, Alexander
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Pena, J
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[Cuantificación de la macrofauna en un vertisol bajo diferentes sistemas de manejo en el Valle del Cauca, Colombia]
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Cuantificación de la macrofauna en un vertisol bajo diferentes sistemas de manejo en el Valle del Cauca, Colombia
En las planicies del Valle del Cauca existen 116.872 ha con dominio del ion Mg+2 en el complejo de cambio, especialmente asociadas con vertisoles, lo que ocasiona marcado efecto sobre las propiedades físicas del suelo y el crecimiento de las plantas. Se seleccionó un grupo de suelos (13) entre lo...
Torrente Trujillo, A
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García Ocampo, A.
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Escobar Chalarca, C.A.
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Amézquita Collazos, Edgar
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Sampayo, TJ
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[Condiciones hidrofísicas de suelos con alta saturación de magnesio en el Valle del Cauca, Colombia]
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Condiciones hidrofísicas de suelos con alta saturación de magnesio en el Valle del Cauca, Colombia
Sahile, G.
,
Tedla, A.
,
[The effect of weeding practices on grain yields of Durum wheat under two drainage conditions of a Vertisol in the Ethiopian highlands]
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The effect of weeding practices on grain yields of Durum wheat under two drainage conditions of a Vertisol in the Ethiopian highlands