Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 82.
  1. Library Resource
    Articles et Livres
    décembre, 1994
    Nigéria, Afrique, Afrique occidentale

    Large areas of land are presently cleared of their natural cover, endangering the worldwide ecosystem. Land clearing, if necessary, should be carried out with great care after very careful consideration. Different land types require different clearing techniques. Often, soil needs to be stabilized after clearing. All clearing processes require training of persons involved.

  2. Library Resource
    Documents et rapports de conférence
    décembre, 1994
    Sri Lanka, Asia du sud-est

    Summaries of papers of a workshop which was organized with the objective of reviewing and comparing experiences in the application of computerized decision support tools to improve the performance of water management in irrigation systems of Sri Lanka.

  3. Library Resource
    Articles et Livres
    décembre, 1994

    Cinco poblaciones de maíz tropical del CIMMYT están siendo mejoradas para tolerancia a suelos ácidos mediante selección recurrente de hermanos completos. Se evaluaron tres ciclos de selección en un diseño de parcela dividida, con número variable de repeticiones, en cinco ambientes edáficos: uno con suelos normales (LNA) y los restantes cuatro con grados variables de estrés edáfico (LSA).

  4. Library Resource
    Documents et rapports de conférence
    décembre, 1994

    This workshop was conceived in recognition of the fact that, over the years, a great deal of research has been conducted on trypanotolerance. With the advent of new and powerful means to identify markers and genes controlling traits of interest, and with the developments in animal breeding bringing greater speed in dissemination of desirable genotypes, there is increasing interest in trypanotolerance as a way forward in trypanosomiasis control.

  5. Library Resource
    Rapports et recherches
    décembre, 1994

    This presentation concerns the key property rights issues arising in the West African Semi-Arid Tropics (WASAT). The WASAT contains three main agro-climatic zones: Sahel (300–600 mm of annual rainfall falling in 2.5–4 months); Sudanian (600–900 mm, 4 to 6 month rainy season); and Guinean (900–1100 mm, 6–7 month rainy season). The author presented a conceptual framework to explain the responses that farmers in the WASAT region have adopted to deal with changes in their environment.

Rechercher dans la bibliothèque foncière

Grâce à notre moteur de recherche robuste, vous pouvez rechercher n'importe quel document parmi les plus de 64 800 ressources hautement conservées dans la bibliothèque du foncier.

Si vous souhaitez avoir un aperçu de ce qui est possible, n'hésitez pas à consulter le guide de recherche.

 

Partagez cette page