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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.Mamo, T.Gebeyehu, G.[Integration of forage legumes into cereal cropping systems in Vertisols of the Ethiopian highlands]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]Landform and phosphorus effects on nitrogen fixed by annual clovers and its contribution to succeeding cereals in the Ethiopian highlands
Haque, I.Amare, T.[Abstracts/Summaries of publications of Soil Science & Plant Nutrition Section: 1984-1989]Abstracts/Summaries of publications of Soil Science & Plant Nutrition Section: 1984-1989
Haque, I.Amare, T.[Soil science & plant nutrition annual reports: 1983-1990 and projects protocols: 1991-1993]Soil science & plant nutrition annual reports: 1983-1990 and projects protocols: 1991-1993

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, EPFeijoo Martínez, AlexanderPena, J[Cuantificación de la macrofauna en un vertisol bajo diferentes sistemas de manejo en el Valle del Cauca, Colombia]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, AGarcía Ocampo, A.Escobar Chalarca, C.A.Amézquita Collazos, EdgarSampayo, TJ[Condiciones hidrofísicas de suelos con alta saturación de magnesio en el Valle del Cauca, Colombia]Condiciones hidrofísicas de suelos con alta saturación de magnesio en el Valle del Cauca, Colombia
Wangui, Elizabeth EdnaOkello, O.O.Gardiner, A.J.Kruska, R.L.Baya, M.S.Reid, Robin S.[Land-use change after tsetse control in Kanyati communal land, northwestern Zimbabwe. Poster]Land-use change after tsetse control in Kanyati communal land, northwestern Zimbabwe. Poster

Discusses low cost animal drawn implements developed by the Vertisol team in Ethiopia for land shaping, planting, weeding, minimum tillage and for constructing water reservoirs in resource poor farming situations.


Astatke, A.Mohamed-Saleem, M.A.[Low cost animal drawn implements for better utilization of Vertisols in the Ethiopian highlands]Low cost animal drawn implements for better utilization of Vertisols in the Ethiopian highlands

This paper discusses the traditional management of vertisols and land-use types the broadbed maker (BBM) and its evolution; Maresha - a traditional plough; additional attachements to the BBM for improving tillage efficiency and resource conservation; the land-use intensification opportunities; an...


Astatke, A.Jabbar, M.A.[Low-cost animal drawn implements for Vertisol management and strategies for land use intensification]Low-cost animal drawn implements for Vertisol management and strategies for land use intensification
Astatke, A.Jabbar, M.A.Mohamed-Saleem, M.A.[Performance of minimum tillage with animal drawn implements on Vertisols in Ethiopia]Performance of minimum tillage with animal drawn implements on Vertisols in Ethiopia

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