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Showing items 1 through 9 of 19.
  1. Library Resource
    Reports & Research
    December, 1988
  2. Library Resource
    Reports & Research
    December, 1988
    Mali, Africa, Western Africa
  3. Library Resource
    Conference Papers & Reports
    December, 1988

    A regional workshop was held in Ethiopia (Eastern Africa) to assess the status, future needs, and methodological issues of soil fertility research for bean cropping systems on the continent. Traditional forms of soil fertility maintenance, diagnosis of soil fertility constraints, nutrient requirements, use of fertilizers, cropping systems and soil fertility, and soil organic matter and the use of green manures and mulching were addressed.

  4. Library Resource
    Conference Papers & Reports
    December, 1988
    Tanzania, Zambia, Malawi, Sub-Saharan Africa, Africa

    Several traditional methods of maintaining soil fertility in bean-based cropping systems are reviewed as follows: visoso, large- scale chitemene, ngoro or matengo pit (Mbinga District, Tanzania), mambwe land-use system of northern Zambia (fundikila), mounds of the Wafipas (SW Tanzania), tumba land-use system (southern Tanzania), guie (central highlands of Ethiopia), mafuku in Zaire, termite mounds, agroforestry, relay intercropping systems, coffee- banana-bean cropping system of the Wahayas of Bukoba (Tanzania), removal of maize tassels (northern Malawi), and storage of nutrients in weeds (

  5. Library Resource
    Reports & Research
    December, 1988
    Ecuador, Bolivia, Peru, Brazil, Guatemala, South America, Central America
  6. Library Resource
    Conference Papers & Reports
    December, 1988

    Presents papers dealing with the use of crop residues as livestock feed in smallholder crop/livestock farming systems, and the role of plant breeding in maintaining or improving their nutritive value. Discusses factors limiting the nutritive value of crop residues, and the effect of genotype and environment on the nutritive value of crop residues. Outlines perspectives and implications for crop improvement programmes. Includes recommendations.

  7. Library Resource
    Conference Papers & Reports
    December, 1988
    Ethiopia, Africa, Eastern Africa

    Presents the results of investigations on the relative distribution of the various phosphorus forms, fixing capacity and status of some Ethiopian highland Vertisols.

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