creators_name: VIAN, Jean François
creators_name: PEIGNE, Joséphine
creators_name: CHAUSSOD, Rémi
creators_name: DAVID, Christophe
creators_name: ROGER-ESTRADE, Jean
type: conference_item
datestamp: 2006-05-09
lastmod: 2009-09-09 13:39:59
metadata_visibility: show
title: Spatial variability of microbial indicators and assessment of tillage systems on the soil microbiological functioning on organic farming.
ispublished: pub
subjects: 4nutrient
subjects: 2soilbiol
subjects: 1soilqual
full_text_status: public
abstract: Reduction tillage, in modifying the soil microorganisms’ environment, modifies their potential to supply plants nutrients. This is of primary importance in organic farming as the nutrients availability is mainly dependent on the organic matter degradation by microorganisms. To study the effect of tillage on soil physical and microbiological properties, we compare 4 tillage practises (deep and shallow ploughing, chisel and no tillage) in an experimental field near Lyon. Our objective is to link a structural statement with a microbiological functioning in order to study the microorganisms’ abilities to supply nitrogen and phosphorus. For such studies, it is of primary importance to use a convenient sampling design as the microbiological properties are highly variable in space and time. So, we first studied, before the treatments differentiation, the spatial variability of some microbiological properties. We first present this study briefly and its utilities for the future assessment of the tillage practises on the soil microbiological functioning.
date: 2006
date_type: published
refereed: never
citation: VIAN, Ph D Jean François; PEIGNE, Dr Joséphine; CHAUSSOD, Dr Rémi; DAVID, Dr Christophe and ROGER-ESTRADE, Pr Jean (2006) Spatial variability of microbial indicators and assessment of tillage systems on the soil microbiological functioning on organic farming. Joint Organic Congress, Odense, Denmark, May 30-31, 2006.
document_url: http://orgprints.org/7635/1/Tillage_and_nutrition.pdf