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Showing items 1 through 9 of 14.
  1. Library Resource
    Reports & Research
    December, 1991
    Sri Lanka, South-Eastern Asia
  2. Library Resource
    Journal Articles & Books
    December, 1991
    Thailand, Asia, South-Eastern Asia

    The success of Thailand`s cassava var. Rayong 3 is highlighted, particularly between cassava starch producers. Compared with Rayong 1, its fresh root yield is almost the same, starch production is higher, and drying time is shorter (2 vs. 3 days). Farmers planting Rayong 3 increased their revenues by at least 10-15 percent. Comparative data are provided for both var. regarding different agronomic characteristics.

  3. Library Resource
    Journal Articles & Books
    December, 1991
    Pakistan, Southern Asia
  4. Library Resource
    Journal Articles & Books
    December, 1991
    Indonesia, Vanuatu, France, Europe

    En el curso de la historia, los bosques fueron apreciados por la multiplicidad de productos y beneficios que rendan, ya sea como medio de subsistencia que de comercio: comestibles, medicinas, especias, resinas, gomas, ltex, fauna, combustible, y madera y productos forestales, etc. La literatura contiene una gran cantidad de ejemplos de comercio internacional de productos forestales, muchos de los cuales se refieren a la ms remota antigedad. Casi siempre se trata de resinas, aceites, especias, etc., y raramente de madera.

  5. Library Resource
    Journal Articles & Books
    December, 1991
    Nepal, France, Bolivia, Sudan, Thailand, Italy

    To produce the desired results, therefore, watershed management efforts must incorporate "forest hydrology", "soil and water conservation" and "land use planning" into a broader, logical framework that takes into consideration not only physical interrelationships but economic, social and institutional factors as well. In this issue, Unasylva examines several facets of watershed management.

  6. Library Resource
    Journal Articles & Books
    December, 1991
    Indonesia, Vanuatu, France, Italy, Europe

    Throughout history, the forests have been valued for the multiplicity of products and benefits that they provide, both for subsistence and for trade: foods, medicines, spices, resins, gums, latexes, wildlife, fuelwood, and of course timber and other wood products. The literature is rich with examples of international trade in forest products, many dating back thousands of years. Significantly, in most cases the products sought by traders were resins, oils, spices, and much less frequently timber.

  7. Library Resource
    Journal Articles & Books
    December, 1991
    Nepal, France, Bolivia, Colombia, China

    Para que produzcan los resultados apetecidos, las actividades de ordenacin de cuencas hidrogrficas han de incorporar hidrologa forestal, conservacin de suelos y aguas y planificacin del uso de la tierra en un marco lgico ms amplio que tome en consideracin no slo los fenmenos fsicos, sino tambin los factores econmicos, sociales e institucionales. En este nmero, Unasylva examina varios aspectos de la ordenacin de cuencas hidrogrficas.

  8. 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.

  9. Library Resource
    Journal Articles & Books
    December, 1991
    Fiji, Bangladesh, Nigeria, Nepal, Israel, Peru, Sri Lanka, Indonesia, Bulgaria, Ghana, Congo, Guinea, Niger, Kenya, Yemen, Australia, Tanzania, Ecuador, Argentina, India, Senegal, Chad, China, Togo

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