A major problem facing the areas already under cultivation, is the seriousness of soil degradation and loss of soil fertility due to indiscriminate misuse of agricultural lands, forests and grazing lands. The modern thinking assigns to soil conservation a comprehensive and more positive role than in the past. in that sustained improvement complemented by the preservation of available resources should form the central concept. Soil conservation must not be limited solely to agricultural and grazing lands.
Résultats de la recherche
Showing items 1 through 9 of 4.-
Library ResourceArticles et Livresdécembre, 1977Kenya, Maroc, Nigéria, Philippines, Chine, République-Unie de Tanzanie, Inde, Australie, Canada, Tunisie, Venezuela, Malawi, Pakistan, Ghana
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Library ResourceArticles et Livresdécembre, 1977France, Nigéria, Espagne, Zambie, Iraq, Australie, Côte d'Ivoire, Kenya, Jordanie, Maroc, République arabe syrienne, Libye, Somalie, Madagascar, République-Unie de Tanzanie, Botswana, Argentine, Inde, Soudan, Liban
There is a urgent need for a better understanding of the risks of soil degradation and their geographical distribution as well as a better knowledge of where degradation occurs at present. it would be desirable to combine soil conservation activities with other elements for increasing crop production.Erosion, salinity and alkalinity and the loss of soil fertility seriously reduce the natural potential of soils to produce food fibres. During the meeting, many criteria to assess the various types of soil degradation were outlined by the experts.
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Library ResourceConstitutionjanvier, 1977République-Unie de Tanzanie, Afrique, Afrique orientale
The Constitution of the Republic of Tanzania was ratified in 1977. Since 1977, several amendments have been applied to the original Constitution. Many of these are related to the relationship between the united government and the Zanzibar government. This Constitution shall apply to Mainland Tanzania as well as Tanzania Zanzibar.
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Library ResourceConstitutiondécembre, 1977République-Unie de Tanzanie
A joint conference of the parties drafted the constitution before it was approved by the legislature.
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