Senapati B.K. auteur aut IRD Lavelle P. auteur aut IRD Giri S. auteur aut IRD Pashanasi B. auteur aut IRD Alegre J. auteur aut IRD Decaëns Thibaud auteur aut IRD Jimenez J.J. auteur aut IRD Albrecht Alain auteur aut IRD Blanchart Eric auteur aut IRD Mahieux M. auteur aut IRD Rousseaux Laurent auteur aut IRD Thomas R. auteur aut IRD Panigrahi P.K. auteur aut IRD Venkatachalam M. auteur aut IRD text bookSection eng text/pdf reformatted digital access Collaborative research in the Macrofauna project has enabled development of some techniques that presently are at different stages of advancement, from promising pilot experiments (tomato production and inoculation in plant nursery bags at Yurimaguas and in India) to the fully developed technique of massive worm production and biofertilization of tea gardens in Tamil Nadu (India) (patent deposited). Failures have also helped to gain better insight into the potential feasibility of techniques that had been considered in the objectives of this project. Endogeic earthworms (Pontoscolex corethrurus) may be produced in large quantities, i.e.about 12000 worms (1.6-2.8 kg live wt)/m2/year in specific culture beds using either sawdust (Yurimaguas, Peru) or a mixture of high and low quality materials (Tamil Nadu, India) mixed into soil as substrates. Cost of production of 1 kg of earthworm biomass through bed culture is about 3.6 Euro, much lower than the cost of hand collection of worms from pastures/grasslands where these species are abundant (6-125 Euro depending on the cost of labour and earthworm density). The theorical value of an active earthworm community with an average biomass of 400 kg live wt has been estimated at 1400 Euro, the price that it would cost to reintroduce an equivalent biomass produced in our culture units, indicating the cost of land restoration. Direct inoculation of earthworms in the field to improve production may only affect plant growth positively if a large biomass (greater than 30 g live wt/m2) is inoculated from the beginning. An alternative may be to concentrate the inoculum in small areas regularly distributed across the field... (D'après résumé d'auteur) specialized LOMBRIC AGROSYSTEME TECHNOLOGIE INOCULATION CULTURE MULTIPLICATION VEGETATIVE MATIERE ORGANIQUE PROPRIETE PHYSIQUE SOL ETUDE EXPERIMENTALE ETUDE COMPARATIVE ZONE TROPICALE HUMIDE PEROU INDE MARTINIQUE COLOMBIE 074FAUSOL03 076AGRO Lavelle P. ed. edt IRD Brussaard L. ed. edt IRD Hendrix P. ed. edt IRD 199-237 Wallingford CABI 1999 https://www.documentation.ird.fr/hor/fdi:010021560 [F A010021553] https://www.documentation.ird.fr/hor/fdi:010021560 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers16-03/010021560.pdf IRD - Base Horizon / Pleins textes 2000-06-05 2016-04-01 fdi:010021560 fre