Cel THE INTRODUCTION OF ENDOGEIC EARTHWORMS IN LOW-INPUT OF THE HUMID TROPICS MAY INCREASE CROP PRODUCTION BY UP TO 40-100% AT THE EARLY STAGES OF THE CROPPING CYCLE (LAVELLE ET AL., PROJECT STD2-2362). NONETHELESS, THE RESULT VARIES DEPENDING ON THE INTRODUCED EARTHWORM SPECIES, TYPE OF CROP AND SOIL TYPE, AND IT IS NECESSARY TO CONTINUE THE EXPERIMENTS. IT IS THEREFORE NECE SSARY TO 1) BROADEN THE BASIC ECOLOGICAL KNOWLEDGE ON TROPICAL ENDOGEIC EARTHWORMS AND THEIR EFFECTS ON SOIL PROCESSES AND CROP PRODUCOTION, NECESSARY TO IDENTIFY ADAPTABLE AND PERFORMING SPECIES FOR INTRODUCTION; APPLY THAT KNOWLEDGE TO 2) REPEAT SUCCESSFULL SMALL-SCALE EXPERIMENTS AT THE REAL SCALE OF A FARMER'S PLOT; AND 3) TEST THE FEASIBILITY OF EARTHWORM INTRODUCTION TO RESTORE DEGRADED SOILS; 4) TEST FOR THE CULTURAL ACCEPTABILITY AND ECONOMIC PROFITABILITY OF TECHNIQUES DERIVED FROM THIS RESEARCH. RESEARCH INTEGRATES SIX RESEARCH THEMES I.E. 1) IDENTIFY POSSIBLY ADAPTABLE SPECIES ON THE BASIS OF THEIR WIDE DISTRIBUTION AND/OR TOLERANCE FOR SPECIFIC ENVIRONMENT CONDITIONS; THE OBJECTIVE IS TO INTEGRATE 400 SPECIES FROM TROPICAL AMERICA, AFRICA AND INDIA IN THE DATABASE ORGANISED IN THE STD2 PROJECT; 2) INVESTIGATE ECOLOGICAL PERFORMANCES OF 10 SPECIES WITH WIDE ECOLOGICAL TOLERANCE SELECTED FROM THE DB IN ITS PRESENT STATE (160 SPECIES; 700 SITES); 3) ASSESS EFFECTS ON SOIL PROCESSES AND FERTILITY IN SHORT-SCALE DESIGNS; ONGOING EXPERIMENTS ON SOIL ORGANIC MATTER DYNAMICS USING NATURAL 13C LABELLING WILL BE CONTINUED AT LAMTO (IVORY COAST) AND YURIMAGUAS (PERU); MORE SMALL-SCALE EXPERIMENTS WILL EVALUATE A RANGE OF SOIL-CROP-EARTHWORM INTERACTIONS IN MEXICO AND COSTA RICA (4 SOILS, 3 CROPS 3-5 EARTHWORM SPECIES): 4) DEVELOP EXPERIMENTATION AT A REAL SCALE TO EVALUATE THE PRACTICAL FEASIBILITY OF THE TECHNIQUE AT YURIMAGUAS WHERE PROMISING RESULTS HAVE BEEN OBTAINED AND SUITABLE CONDITIONS FOR AGRONOMIC EXPERIMENTATION ARE AVAILABLE; TWO OPTIONS WILL BE CONSIDERED I.E. A- THE DIRECT INTRODUCTION, JUST AFTER CLEARING OF THE FOREST, OF A MINIMUM QUANTI TY OF EARTWORMS PRODUCED IN LABORATORY CULTURES (60KG HA-1) IN THE ORIGINAL FOREST, ONE YEAR BEFORE CLEARING TO ALLOW NATURAL MULTIPLICATION OF POPULATIONS TO INCREASE BIOMASS UNTIL SUITALBE LEVELSL 5) CONSIDER THE APPLICATION TO THE REGENERATION OF DEGRADED SOILS; Dziedzina nauki natural sciencescomputer and information sciencesdatabasessocial sciencessociologydemographyfertilityagricultural sciencesagriculture, forestry, and fisheriesagricultureagricultural sciencesagricultural biotechnologybiomass Program(-y) FP3-STD 3 - Specific research and technological development programme (EEC) in the field of the life sciences and technologies for developing countries, 1990-1994 Temat(-y) Data not available Zaproszenie do składania wniosków Data not available System finansowania CSC - Cost-sharing contracts Koordynator Institut Français de Recherche Scientifique pour le Développement en Coopération (ORSTOM) Wkład UE Brak danych Adres 70-74 route d'Aulnay 93143 Bondy Francja Zobacz na mapie Koszt całkowity Brak danych Uczestnicy (7) Sortuj alfabetycznie Sortuj według wkładu UE Rozwiń wszystko Zwiń wszystko Institut Français de Recherche Scientifique pour le Développement en Coopération - ORSTOM Martynika Wkład UE Brak danych Adres 15,Rue Raymond Garcin 97259 Fort-de-France Zobacz na mapie Koszt całkowity Brak danych Instituto de Ecologia A.C. Meksyk Wkład UE Brak danych Adres KM 2.5,Antigua Carretera a Coatepec 91000 Xalapa - Veracruz Zobacz na mapie Koszt całkowity Brak danych Landbouwuniversiteit Wageningen Niderlandy Wkład UE Brak danych Adres 10,Duivendaal 6701 AR Wageningen Zobacz na mapie Koszt całkowity Brak danych North Carolina State University Peru Wkład UE Brak danych Adres 1894,Javier Prado Este Lima Zobacz na mapie Koszt całkowity Brak danych Sambalpur University Indie Wkład UE Brak danych Adres TH 715 768019 Jyoti Bihar Zobacz na mapie Koszt całkowity Brak danych UNIVERSIDAD COMPLUTENSE DE MADRID Hiszpania Wkład UE Brak danych Adres Isaac Peral 28040 MADRID Zobacz na mapie Koszt całkowity Brak danych Université Nationale du Rwanda Rwanda Wkład UE Brak danych Adres Campus Universitaire de Butaré Butaré Zobacz na mapie Koszt całkowity Brak danych