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Résultats de la recherche

Showing items 1 through 9 of 46.
  1. Library Resource

    Seminario Regional sobre Metropolización y Medio Ambiente

    Documents et rapports de conférence
    avril, 1982
    Brésil, Chili, Cuba, Mexique, Pérou, Venezuela, Amérique du Sud, Amérique centrale

    Presenta la organizacion de los trabajos, las conclusiones y recomendaciones del seminario.

  2. Library Resource
    Rapports et recherches
    décembre, 1982
    Kenya

    Few studies exist that show the relationship between urban transportation and urban structure in the developing world. As the developing countries become rapidly urbanized, there is growing need for adequate planning for a balanced urban development. Urban planners should pay attention to urban transportation for it provides access to urban areas and helps to reduce intra-urban inequality.

  3. Library Resource
    Rapports et recherches
    février, 1982
    Afrique

    The report contains suggestions for a greater effort to be made in the understanding of the problems of agricultural development from the point of view, of the small, farmers and for a consequent reorientation of actions so that the relevant institutions would be able to serve the interests of the small farmers and the nation at large.

  4. Library Resource
    Documents et rapports de conférence
    mars, 1982
    Afrique

    It will be recalled that, at its 5th meeting held at Rabat, the ECA Conference of ministers decided to include studies and related activities concerning the establishment of agricultural commodity exchange for Eastern and Southern African States in the work programme of the Lusaka MULPOC for 1980-1981. Thereafter, the Lusaka MULPOC Council of Ministers, at its 3rd meeting held at Gaborone, Botswana, formally incorporated that project in its work programme for 1980.

  5. Library Resource
    Articles et Livres
    décembre, 1982

    Chemical analysis and missing element trials with Sorghum vulgare L. showed that three Panamanian soils, representative of three great soil groups, were deficient in both nitrogen (N) and phosphorus (P). When a greenhouse trial was undertaken to test the response of Cajanus cajan to rhizobial inoculation, N and P fertilization in these soils, no response was obtained in either the Río Hato or Los Santos soils. There was a definite response to P and a slight response to inoculation in the Pacora soil, which had the poorest fertility level. N applications depressed nodulation.

  6. Library Resource
    Articles et Livres
    décembre, 1982

    Biological nitrogen (N2) fixation in both free-living and symbiotic organisms is an energy-requiring process dependent upon a supply of carbon and energy. In this paper the energy costs for N2 fixation and nodule respiration in symbiotic systems are compared with those of free-living N2-fixing systems, with the theoretical energy requierement for N2 fixation, and with the cost of utilization of combined N.

  7. Library Resource
    Articles et Livres
    décembre, 1982
    Colombie, Amérique centrale, Amérique du Sud

    Se describen los resultados obtenidos durante 1981 por la seccion de Microbiologia del Suelo del Programa de Pastos Tropicales del CIAT, cuyos objetivos especificos son: 1) seleccionar leguminosas forrajeras promisorias que no requieren inoculacion; 2) seleccionar cepas de Rhizobium para leguminosas que si necesitan inoculacion; y 3) evaluar el efecto de las tecnicas de inoculacion y practicas de manejo de pastos en la nodulacion y fijacion de N en el campo. Se presentan los resultados de 1) expt.

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