Objetivo THIS PROJECT CONTINUES THE WORK BEGUN IN OUR COLLABORATIVE PROJECT UNDER STD 2. PRESENT COLLABORATORS ARE : THE UNIVERSITY OF CAMBRIDGE, ESTACION EXPERIMENTAL DEL ZAIDIN, GRANADA, SPAIN AND THE UNIVERSITY 0F COSTA RICA. THIS PROPOSED PROJECT WOULD ALSO INCLUDE THE INSTITUTE 0F TERRESTRIAL ECOLOGY. UK. WE HAVE LARGE (2+HA.), CAREFULLY MONITORED TRIAL AREAS OF ALLEY-CROPPING AND CLEAR CROPPING IN THE HUMID TROPICAL LOWLANDS OF COSTA RICA. THE SOIL IS VERY ACID (ULTISOL) ; PHOSPHORUS AVAILABILITY IS VERY LOW ; PHOSPHORUS SORBTION BY ALL BUT THE MOST SUPERFICIAL SOIL LAYERS IS VERY HIGH. MULCHING THE SOIL WITH FRESHLY PRUNED FOLIAGE FROM CERTAIN ACID-TOLERANT LEGUME TREE SPECIES, GROWN IN SITU, PRODUCES A VERY MARKED RAISING 0F (MYCORRHIZAL) FINE ROOTS OF THE ALLEY TREES AND CROP PLANTS. APPLICATION 0F ROCK PHOSPHORUS TO THIS MULCH PRODUCES A RESPONSE IN THE CROPS AND TREES AND APPEARS TO DEFEAT PHOSPHORUS SORBTION IN THE SOIL. APPLICATION OF GROUND BASIC ROCKS BENEFITS THE SYSTEM. OUR FOCUS oF INTEREST IS IN SUSTAINABILITY OF PRODUCTION ;THESE PROCESSES ARE VITAL To IT. WE SHALL HAVE 3 YEARS' CROPPING DATA BY THE END OF THE PROJECT UNDER STD 2 ;FOR CONSIDERATIONS OF SUSTAINABILITY WE SHALL NEED 7 YEARS. Ámbito científico natural sciencesbiological sciencesecologyagricultural sciencesagriculture, forestry, and fisheriesagriculturegrains and oilseedslegumes Programa(s) FP3-STD 3 - Specific research and technological development programme (EEC) in the field of the life sciences and technologies for developing countries, 1990-1994 Tema(s) Data not available Convocatoria de propuestas Data not available Régimen de financiación CSC - Cost-sharing contracts Coordinador University of Cambridge Aportación de la UE Sin datos Dirección Downing Place CB2 3EN Cambridge Reino Unido Ver en el mapa Enlaces Sitio web Opens in new window Coste total Sin datos Participantes (3) Ordenar alfabéticamente Ordenar por aportación de la UE Ampliar todo Contraer todo CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS España Aportación de la UE Sin datos Dirección 1,Profesor Albareda 1 18008 GRANADA Ver en el mapa Coste total Sin datos NERC Institute of Terrestrial Ecology Reino Unido Aportación de la UE Sin datos Dirección Merlewood Research Station Windermere Road LA11 6JU Grange-over-Sands Ver en el mapa Coste total Sin datos Universidad de Costa Rica Costa Rica Aportación de la UE Sin datos Dirección Ciudad Universitaria San José Ver en el mapa Coste total Sin datos
