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Showing items 1 through 9 of 4.
  1. Library Resource
    Conference Papers & Reports
    March, 1984
    Ethiopia

    It soon became apparent that soil degradation in the Ethiopian Highlands may be posing a threat not only in terms of the physical loss of soils, but also in terms of deteriorating, soil chemical fertility. This study has therefore emphasized both the physical and chemical deterioration of soils due to degradation.

  2. Library Resource
    Journal Articles & Books
    December, 1984
    Kenya, France, Nigeria, Philippines, Micronesia, Australia, Ghana, Congo, Guinea, India, Sierra Leone, Ethiopia, Niger, Brazil

    Shifting cultivation, under its diverse forms of slash and burn system, is a traditional method of cultivating tropical upland soils, mostly for subsistence purposes. This traditional system of cultivation is in ecological balance with the environment and does not irreversibly degrade the soil resource, provided a sufficient length of fallow is allowed for soil restoration. However, increasing population pressures necessitate more intensive use of land. The consequence is extended cropping periods and shortened fallows.

  3. Library Resource
    Journal Articles & Books
    December, 1984
    Ethiopia, Africa, Eastern Africa

    Compares the climates and soils and vegetation of the Ethiopian Rift Vallety with those of other areas in Africa, with particular reference to the screening of forage species. Examines the diversity of climates and soil conditions as they constitute constraints to forage or crop production in the Rift Valley, classifying major tribes in the grass flora, & analysing the adaptability of some genera of tropical forage legumes in commercial use to water stress, heat stress & poor soil.

  4. Library Resource
    Journal Articles & Books
    December, 1984
    Ethiopia, Africa, Eastern Africa

    Reports experiences with on-farm trials to assess the use of single oxen for work on mixed smallholder farms in the central highlands of Ethiopia, with particular reference to draft power and agricultural production, design and testing of the single ox technique, and results obtained during the 1983 crop year and future prospects with respect to feed requirements and advantages of using the single ox.

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