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Showing items 1 through 9 of 155.
  4. Library Resource

    A review of mixed farming systems in the semi-arid zone of sub-Saharan Africa

    Reports & Research
    December, 1991
    Rangelands, Drylands & Pastoralism
    environment
    farming systems
    rangelands

    The paper is divided into four chapters. The frist chapter is the introduction. Chapter two discusses the conceptualisation of the farming system with reference to the livestock component and reviews some alternative typologies that have been employed or proposed. A typological framework that is consistent with ILCA's objectives is then outlined. Chapter 3 develops a regionalisation of the semi arid zones of sub-Saharan Africa in four orders of increasing scale. The first order sub-division is between "West and North" and "East and South" geographical regions.

  5. Library Resource

    A review of the sampling methods used in aerial survey

    Journal Articles & Books
    December, 1981
    land use

    Reviews procedures for obtaining reliable information on animal populations, other ecological features and land use generally from low-flying aircraft by direct observation or conventional photography, with reference to types of sampling unit, and the relative merits of unstratified systematic and stratified random sampling.

  9. Library Resource

    A survey of the farming systems of Vertisol areas of the Ethiopian highlands

    Reports & Research
    December, 1993
    Ethiopia, Africa, Eastern Africa
    natural resources management
    farming systems

    In 1986, ILCA carried out informal surveys at Dogollo and Inewari in order to understand the farming systems. Such surveys were also conducted by the Institute of Agricultural Research (IAR) at Ginchi in 1986 and by the Alemaya University of Agriculture at Ada/Debre Zeit in 1988/89. This was followed by one-time detailed formal farm surveys at Dogollo, Inewari and Ginchi in 1988/89. This chapter mostly presents the results of these formal surveys.

  10. Library Resource

    Adapting social science to the changing focus of international agricultural research. Proceedings of a Rockefeller Foundation-ILCA social science research fellows workshop

    Conference Papers & Reports
    December, 2004
    Africa, Asia
    Rangelands, Drylands & Pastoralism
    environment
    food security
    rangelands
    natural resources management
    agriculture
    research

    The papers in this proceedings provide a cross section of science research in international agricultural research centres (IARCs), where the objectives and research foci within the Consultative Group on International Agricultural Research (CGIAR) have changed substantially in the 1990s. The book is divided in five sections. The first explores priority setting and research evaluation of commodity programmes. The second looks at institutional issues. The third explores issues related to commodity policies and food security.

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