Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 37.
  1. Library Resource
    Articles et Livres
    décembre, 2018
    Algérie, Burkina Faso, Nigéria, Mauritanie, Mali, Éthiopie, Érythrée, Cameroun, Soudan du Sud, République centrafricaine, Sénégal, Tchad, Niger, Soudan, Afrique occidentale, Afrique

    Feed and grazing management affect both the quantity and quality of animal manure and consequently nutrient cycling in the mixed crop-livestock systems in West Africa Sahel. Dietary measures can significantly influence the composition of manure and hence it’s agricultural value. High nutrient feed will generally result in higher nutrient content of the manure whereas a decline in feed quality will generally lead to increase in the indigestible fractions in the feeds.

  2. Library Resource
    Articles et Livres
    octobre, 2018
    Soudan, Afrique

    In the Gash Delta of Eastern Sudan, spate irrigation (flood-recession farming) contributes substantially to rural livelihoods by providing better yields than rainfed dryland farming. However, spate irrigation farmers are challenged by the unpredictability of flooding. In recent decades, the number of farmers practicing spate irrigation has decreased, due to varying rainfall intensity and frequency, insufficient infrastructure and farmers’ limited capacity to manage such variations.

  3. Library Resource
    Articles et Livres
    décembre, 2017
    Égypte

    The Nile Delta of Egypt is known for its large irrigated area supplied with water diverted from the Nile River, with a limited use of groundwater, largely for domestic and industrial use. Official statistics for the whole delta indicate that there are a few thousand individual wells used for agriculture by a population of over 2 million farmers. This study, however, shows that a phenomenon of groundwater development for irrigation has been unfolding over the last few years, largely below the radar of managers and researchers.

  4. Library Resource
    Articles et Livres
    décembre, 2017
    Tunisie

    Avoiding the negative effects of intensive groundwater resource use is challenging, especially when the interactions and causal pathways between biophysical and socioeconomic processes are complex, and when users, management, and regulatory bodies are spatially dispersed. The plain of Haouaria, in north-eastern Tunisia, has witnessed an important development of groundwater abstraction, fueled by the multiplication of wells tapping the underlying shallow and deep aquifers.

  5. Library Resource
    Articles et Livres
    décembre, 2005
    Équateur, El Salvador, Ghana, Guatemala, Haïti, Honduras, Kenya, Madagascar, Malawi, Mexique, Nicaragua, Nigéria, Panama, Soudan, République-Unie de Tanzanie, Ouganda, Bénin, Cameroun, Colombie, Costa Rica, Cuba, République dominicaine, Afrique, Caraïbes, Amérique centrale, Amérique du Sud
  6. Library Resource
    Articles et Livres
    décembre, 2013
    Maroc, Sénégal, Ghana, Algérie, Burkina Faso, Égypte, Afrique

    When discussing water and sanitation issues, technology is often seen as the key element by many stakeholders. Within a multinational project, the opportunity was taken to analyse the experiences with the existing water infrastructure to look behind this assumption and - if not working satisfactory - to identify the key requirements that obviously have not been met. Following this, it should be possible to prepare a set of requirements to learn from this.

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