Coll P. auteur aut IRD Le Cadre E. auteur aut IRD Blanchart Eric auteur aut IRD Hinsinger P. auteur aut IRD Villenave Cécile auteur aut IRD text journalArticle eng text/pdf born digital access The rate of conversion of conventional vineyards into organic farming is currently increasing. This results in modifications of agricultural practices such as the application of organic manure, the use of tillage or grass-cutting to control weeds and the application of natural pesticides with preventive action. One of the aims of organic farming is to preserve the environment. In this context, the objective of our work was to evaluate the long-term effects of organic viticulture on soil quality. The study was conducted in a commercial vineyard where plots which had been organically managed for 7 (Organic7), 11 (Organic11) and 17 years (Organic17) were compared to conventionally managed plots (Conventional). Soil physical and chemical parameters (bulk density, organic matter, available phosphorus, potassium and copper contents) and biological parameters (soil microbial biomass, density of nematode trophic groups and density and biomass of earthworm ecological categories) were measured. The organic farming led to an increase in soil organic matter, potassium content, soil microbial biomass, plant-feeding and fungal-feeding nematode densities. However, organic farming increased soil compaction, decreased endogeic earthworm density and did not modify the soil micro-food web evaluated by nematofauna analysis. Our study highlights the difficulty to show the benefits of organic farming on global soil quality in this particular pecloclimatic area and set of farming practices. 0 2011 Elsevier B.V. All rights reserved. specialized Conventional viticulture Bioindicators Organic matter Microbial biomass Nematodes Earthworms 074 076 50 37-44 2011 0929-1393 https://www.documentation.ird.fr/hor/fdi:010054198 10.1016/j.apsoil.2011.07.013 0929-1393 [F B010054198] https://www.documentation.ird.fr/hor/fdi:010054198 https://www.documentation.ird.fr/intranet/publi/2011/12/010054198.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2012-01-10 2017-08-23 fdi:010054198 fre