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Mostrando ítems 1 a 9 de 18.
  1. Library Resource
    Artículos de revistas y libros
    Diciembre, 1994
    Mozambique, Polonia, Eslovaquia, Estados Unidos de América, Hungría, México, Italia

    The forestry and forest industries sectors have been borne on the tide of this wider reform. This issue of Unasylva offers an analysis of experiences with regard to forestry in transitional economies, with the aim of facilitating an understanding of the important issues involved in the process.

  2. Library Resource
    Artículos de revistas y libros
    Diciembre, 1994
    Malasia, Malawi, Italia

    This issue of Unasylva examines a number of facets of forestry research, emphasizing needs for and efforts made towards strengthening national capability in the developing countries.

  3. Library Resource
    Documentos de conferencias e informes
    Diciembre, 1994
    Nigeria, África, África occidental

    Reports on completed and planned research to examine farmers' perceptions of different breeds, the discretion they exercise over breed composition, and the impacts of breed perceptions on breeding practices. ILCA has recently undertaken three household surveys that shed light on farmers' breed preferences and breeding practices. The survey results indicate that farmers' breed prortfolios are the outcome of dynamic processes that vary across farmers and environmental conditions.

  4. Library Resource
    Artículos de revistas y libros
    Diciembre, 1994
    Uganda, África oriental

    The potential of Crotalaria ochroleuca check for this species in other resources as a green manure crop was evaluated in a series of on-station and on-farm trials on reddish kaolinitic loam and sandy clay loam soils in Uganda. Production of the green manure by intercropping Crotalaria with either maize or beans was found to be feasible with little reduction in food crop yield and a mean Land Equivalent Ratio of 1.3. The large amounts of N in the Crotalaria indicates that large quantities of N were biologically fixed.

  5. Library Resource
    Informes e investigaciones
    Diciembre, 1994
    África, África occidental

    IITA developed alley cropping (also called hedgerow intercropping by ICRAF) in the mid 1970s to alleviate the problems of reduced soil fertility, reduced yields and soil erosion that were associated with population growth and reduced fallow periods. In the early 1980s this technology was adapted by ILCA to serve as a source of feed. On-farm research was conducted in two locations of South-West and South-East Nigeria. The locations differ in terms of population density, soil fertility, land tenure and typical farm layout.

  6. Library Resource
    Informes e investigaciones
    Diciembre, 1994
    Etiopía, África, África oriental

    This research is being undertaken as an ILCA project with support from the Rockefeller Post-Doctoral Fellowship Programme. There are three objectives. One objective is very similar to that of the World Bank and Niger studies: to determine the effects of land tenure on investment, productivity and efficiency in crop-livestock systems in the Ethiopian highlands.

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