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Showing items 1 through 9 of 124.
  1. Library Resource
    Reports & Research
    December, 1994
    Africa, Western Africa

    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.

  2. Library Resource
    Journal Articles & Books
    December, 1994
    Colombia, South America

    The effect of different types of land management on the soil macrofauna of the savanna has been assesed using the T.S.B.F. method. Macrofauna of the forest and savanna has a high density (4293 and 2830 ind.m(2)) and moderate biomass (13.6 and 15.3 g.m(-2)). Traditional grazing significantly increase earthworm biomass but does not modify biomass (16.8 g.m(-2)) and density (1971 ind.m(-2)). Burning the savanna leads to a momentarily but important disruption of the soil fauna. After 6 months, soil macrofauna has regained its initial level.

  3. Library Resource
    Reports & Research
    December, 1994

    This report at first presents summary of a talk given at ILRAD. Following this, it discusses tickborne diseases particularly epidemiology and biology, parasite antigens with vaccine, vaccine development etc. The report also reviews trypanosomiasis and topics covered within parasite-host interaction, anemia and others. In addition, socioeconomics and environmental impact, cooperative programs, training and information, research support, etc are outlined in the report.

  4. Library Resource
    Journal Articles & Books
    December, 1994

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