This series of African compendium of environment statistics, presents environmental and environment –related data for the African region.
Résultats de la recherche
Showing items 1 through 9 of 24.-
Library ResourceDocuments et rapports de conférencedécembre, 1995Afrique
-
Library ResourceDocuments et rapports de conférencemai, 1995Eswatini
The mission was in accordance with Programme Element 20.48 of the approved United Nations Regular Programme for Technical Cooperation for the 1994-1995 Biennium which calls for the provision of advisory services and training to member countries and inter-governmental organizations in support of their efforts at developing their agricultural support services.
-
Library ResourceDocuments et rapports de conférencedécembre, 1995Mali, Afrique, Afrique occidentale
In the Sahelian rangelands biomass production is constrained by soil moisture in the drier (100-250 mm) parts and by soil nutrients in the wetter parts. Similarly, for a given Sahelian range, nutrient deficiency would be more prominent in good than in poor rainfall years. To test this hypothesis, fertiliser trials were carried out at sites distributed along the bioclimatic gradient in the Gourma (Mali) over contrasting rainfall years between 1988 and 1992.
-
Library ResourceDocuments et rapports de conférencedécembre, 1995Afrique, Afrique occidentale
The integration of crops and livestock has often been cited as a model for agricultural development in semi-arid West Africa. Recent formulations treat the adoption of more intensive forms of manuring as a critical step in agricultural development. These analyses have been criticised for ignoring or underestimating the possible negative consequences of such management on rangeland and livestock productivity. This paper critically examines this debate. It is argued that the agronomic benefits of manuring depend largely on nutrient transfers from non-cropped grazing lands.
-
Library ResourceDocuments et rapports de conférencedécembre, 1995
The papers are grouped into four categories: land management practices for intensive agriculture; overcoming soil constraints; technology adoption; and planned research and development.
-
Library ResourceDocuments et rapports de conférencedécembre, 1995Honduras, Amérique centrale, Amérique du Sud
-
Library ResourceDocuments et rapports de conférencedécembre, 1995Honduras, Amérique centrale, Amérique du Sud
-
Library ResourceDocuments et rapports de conférencedécembre, 1995Honduras, Amérique centrale, Amérique du Sud
-
Library ResourceDocuments et rapports de conférencedécembre, 1995
This workshop was conducted to identify and prioritise areas of rumen ecology which are promising for their potential impact on improving nutrition status of tropical ruminants, to develop a rumen ecology research programme for ILRI based on relevance to developing countries and ILRI's comparative advantage vis-a-vis other institutions, to identify potential collaborators in advanced research institutes, and to define model(s) of collaboration.
-
Library ResourceDocuments et rapports de conférencedécembre, 1995Afrique, Afrique sub-saharienne
The important position and role of mixed farming systems in land use intensification in subSaharan Africa is reviewed. This is done by examining the current situation that is followed with a justification for mixed farming. Further sections follow on changing patterns of land use, including the effects of tsetse flies and trypanosomiasis, and on constraints to further crop-livestock integration.
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.