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Showing items 1 through 9 of 56.
  1. Library Resource
    Conference Papers & Reports
    December, 1995
    Mali, Africa, Western Africa

    In the Sahelian rangelands biomass production is constrained by soil moisture in the drier (100-250 mm) parts and by soil nutrients in the wetter parts. Similarly, for a given Sahelian range, nutrient deficiency would be more prominent in good than in poor rainfall years. To test this hypothesis, fertiliser trials were carried out at sites distributed along the bioclimatic gradient in the Gourma (Mali) over contrasting rainfall years between 1988 and 1992.

  2. Library Resource
    Conference Papers & Reports
    December, 1986
    Kenya, Africa, Eastern Africa

    Discusses the results of the measurement of environmental changes in grazed ecosystems with reference to correlated changes in livestock management in Kenya; includes techniques used to measure the changes, and proposed methods; presents data on a case study at a group ranch located in western Kenya which covers 50,000 ha.; ends with comparison of surveys, i.e., that of 1978 and 1981.

  3. Library Resource
    Conference Papers & Reports
    December, 1986
    Nigeria, Africa, Western Africa

    Summarises the performance of three species of stylosanthes, viz, S. guianensis cvs Cook and Schofield, S. hamata cv. Verano and S. humilis under different production systems in Nigeria, such as in pure legume pastures, mixed pastures, with crops, in rangeland and under seed production.

  4. Library Resource
    Conference Papers & Reports
    December, 1976
    Africa, Sub-Saharan Africa

    Recommendations for preservation and improvement of sub-Saharan rangelands, and for training people in range management and animal production.

  5. Library Resource
    Conference Papers & Reports
    December, 1995
    Africa, Western Africa

    The integration of crops and livestock has often been cited as a model for agricultural development in semi-arid West Africa. Recent formulations treat the adoption of more intensive forms of manuring as a critical step in agricultural development. These analyses have been criticised for ignoring or underestimating the possible negative consequences of such management on rangeland and livestock productivity. This paper critically examines this debate. It is argued that the agronomic benefits of manuring depend largely on nutrient transfers from non-cropped grazing lands.

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