Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 53.
  1. Library Resource
    Articles et Livres
    décembre, 2004
    Afrique, Afrique occidentale

    In order to identify options suitable for providing livestock feed in the wetter part of the moist savanna, the DM yield, botanical composition, crude protein, in sacco digestibility and neutral detergent fibre of combinations of 4 herbaceous legumes and 2 grasses were evaluated between June 1994 and December 1995 at Ibadan, south-western Nigeria. The legumes, Stylosanthes guianensis, Aeschynomene histrix, Centrosema pubescens and Chamaecrista rotundifolia, were each planted in combination with Brachiaria ruziziensis and Cynodon nlemfuensis.

  2. Library Resource
    Documents et rapports de conférence
    décembre, 2004
    Afrique, Asie

    The papers in this proceedings provide a cross section of science research in international agricultural research centres (IARCs), where the objectives and research foci within the Consultative Group on International Agricultural Research (CGIAR) have changed substantially in the 1990s. The book is divided in five sections. The first explores priority setting and research evaluation of commodity programmes. The second looks at institutional issues. The third explores issues related to commodity policies and food security.

  3. Library Resource
    Articles et Livres
    décembre, 2004
    Mexique

    Site degradation occurs mainly through deterioration of the soil's capacity to capture and store water, as well as the loss of organic matter or the accumulation of salts or other toxic substances in the soil. This degradation process, leading to the reduction of the biotic potential of the site, is known as desertification. In this study, changes in bulk density, organic matter, and electrical conductivity are used as indicators of desertification in northeast Mexico.

  4. Library Resource
    Articles et Livres
    décembre, 2004
    Espagne

    A survey of abomasal parasites in cervids from Central Spain was conducted at 3 sites, Quintos de Mora (Toledo), Maluéñez de Arriba (Cáceres), and La Herguijuela (Cáceres). Commonly occurring helminths belonged to 3 polymorphic species of the Ostertagiinae: Spiculopteragia asymmetrica/S. quadrispiculata, Ostertagia leptospicularis/O. kolchida, and O. drozdzi/O. ryjikovi. Trichostrongylus axei was found in very few cases. Ostertagia drozdzi/O. ryjikovi and the minor male morphotype, S. quadrispiculata, are reported for the first time in red deer from Spain.

  5. Library Resource
    Articles et Livres
    décembre, 2004

    The vegetation dynamics of semi-arid and arid landscapes are temporally and spatially heterogeneous and subject to various disturbance regimes that act on decadal scales. Traditional field-based monitoring methods have failed to sample adequately in time and space in order to capture this heterogeneity and thus lack the spatial extent and the long-term continuous time series of data necessary to detect anomalous dynamics in landscape behavior.

  6. Library Resource
    Législation et politiques
    Législation
    avril, 2004
    Équateur

    This is a general agricultural land law passed in 1997 in Ecuador.

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