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Showing items 1 through 9 of 7.
  1. Library Resource
    Conference Papers & Reports
    March, 1984
    Ethiopia

    It soon became apparent that soil degradation in the Ethiopian Highlands may be posing a threat not only in terms of the physical loss of soils, but also in terms of deteriorating, soil chemical fertility. This study has therefore emphasized both the physical and chemical deterioration of soils due to degradation.

  2. Library Resource
    Legislation
    December, 1984
    Brazil

    This Law, consisting of 22 articles, provides for agricultural soil preservation within the State of Paraná. The agricultural land is a National Patrimony and, consequently, it is under the responsibility of the State, the rightful owners, the temporary occupants and the community to preserve it, exercising in it the right of ownership or temporary possession with the limitations established in this agricultural land code of use. The use of agricultural land will only be allowed through land use planning, according to its capacity through the use of appropriate technology.

  3. Library Resource
    Reports & Research
    December, 1984
    Netherlands

    De in 1981 en 1982 verleende en geweigerde bouw- en aanlegvergunningen in 25 Drentse gemeenten zijn geinventariseerd en er is nagegaan welke procedure de gemeenten hebben gevolgd. Het betreft uitsluitend vergunningaanvragen van land- en tuinbouwers voor de uitvoering van werken en werkzaamheden ten behoeve van de uitoefening van hun bedrijf. Van de 451 aangevraagde vergunningen voor bouw binnen een bouwperceel zijn er slechts 2 geweigerd; voor bouwen buiten het bouwperceel werden 11 vergunningen verleend en 2 geweigerd.

  4. Library Resource
    Journal Articles & Books
    December, 1984
    Ethiopia, Africa, Eastern Africa

    Compares the climates and soils and vegetation of the Ethiopian Rift Vallety with those of other areas in Africa, with particular reference to the screening of forage species. Examines the diversity of climates and soil conditions as they constitute constraints to forage or crop production in the Rift Valley, classifying major tribes in the grass flora, & analysing the adaptability of some genera of tropical forage legumes in commercial use to water stress, heat stress & poor soil.

  5. Library Resource
    Journal Articles & Books
    December, 1984
    Kenya, France, Nigeria, Philippines, Micronesia, Australia, Ghana, Congo, Guinea, India, Sierra Leone, Ethiopia, Niger, Brazil

    Shifting cultivation, under its diverse forms of slash and burn system, is a traditional method of cultivating tropical upland soils, mostly for subsistence purposes. This traditional system of cultivation is in ecological balance with the environment and does not irreversibly degrade the soil resource, provided a sufficient length of fallow is allowed for soil restoration. However, increasing population pressures necessitate more intensive use of land. The consequence is extended cropping periods and shortened fallows.

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