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Showing items 1 through 9 of 4.
  1. Library Resource
    Journal Articles & Books
    December, 1991
    Nigeria, Africa, Western Africa

    In agriculture, surveying is required to prepare topographical maps that indicate variations in the level of the land's surface. Topographical maps are necessary as a base for the preparation of research station maps which include layout of field, buildings, roads, and soil conservation measures.

  2. Library Resource
    Journal Articles & Books
    December, 1991
    France, Zambia, Afghanistan, Zimbabwe, Australia, Greece, Guinea, Ethiopia, Pakistan, Colombia, Panama, Kenya, Jordan, Philippines, Libya, Italy, Botswana, Netherlands, Argentina, Sudan, Europe, Asia, Africa, Northern America

    Extensive grazing is the predominant form of land use on at least a quarter of the world’s land surface, in which livestock are raised on food that comes mainly from rangelands. Extensive grazing differs from crop or forestry production, in which the produce remains in situ whilst growing. Evaluation for extensive grazing, unlike that for cropping or forestry, must take into account the production of both grazing forage, termed primary production, and the livestock that feed on this forage, termed secondary production.

  3. Library Resource
    Journal Articles & Books
    December, 1991
    Egypt, Bangladesh, Nigeria, Kenya, Israel, Chile, Peru, China, Ethiopia, Republic of Korea, Niger, Thailand, Nepal, Morocco, Philippines, Somalia, Italy, Tanzania, India, Sudan, Brazil

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