Guide sur les techniques de restauration du sol en viticulture

Guidelines for soil functionality restoration in degraded areas of vineyard (French language

ReSolVe : restaurer la fertilité des sols viticoles en agriculture biologique

Le projet ReSolVe (programme Core Organic Plus) regroupe 6 pays dans l’objectif de restaurer la fertilité des sols viticoles par des méthodes alternatives dans des parcelles conduites en agriculture biologique présentant des zones caractérisées par des déficiences de vigueur, de récolte ou encore de qualité. L’objectif est de tester des techniques compatibles avec l’agriculture biologique afin de rétablir la fertilité et le fonctionnement du sol dans ces zones dégradées : ajout de compost, semis d’engrais verts, et semis d’un enherbement géré en mulch. 6 parcelles d'essai ont été mises en place en France. Les relations entre caractéristiques des sols, biodiversité (dont mésofaune), décomposition de la matière organique et conséquences sur la productivité de la vigne ont été évaluées lors d'une première année témoin en 2015 et les effets de la mise en place des modalités commencent à être évalués en 2016

SOIL ENZYME ACTIVITIES RECOVERY AFTER ORGANIC TREATMENTS OF DEGRADED AREAS WITHIN VINEYARDS

Soil enzymes were used to assess the impact of different treatments applied in four farms, each one with three vineyards as replicates, on soil functionality. 8 enzymes related to C, N, S and P cycling were measured and functional diversity indexes were estimated. Three treatments were compared: compost, green manure and dry mulching with respect to degraded and non-degraded soil. The four vineyards showed different enzymatic patterns and response to treatments. Vineyards with the largest difference between degraded and non-degraded soil have benefited more largely from the treatments. In particular, dry mulching seemed to be more effective than green manure or compost, with the exception of San Disdagio. However, the effect the short term

Protocol for soil functionality assessment in vineyards

Protocols used by Resolve partners during the project, to assess soil functionality on degraded aeras and evaluate soil restoration after applying recovering practices

Restoring soil functionality in degraded areas of organic vineyards - Preliminary results of the ReSolVe project in the French vineyards

Degraded soil areas in vineyards are associated with problems in vine health, grape production and quality. Different causes for soil degradation are possible such as poor organic matter content, lower plant nutrient availability, pH, water deficiency, soil compaction / lower oxygenation… The aim of this preliminary study is to assess soil functionality (OM decomposition), biodiversity through mesofauna diversity and consequences for vine growth and quality

Effect of organic treatments on soil carbon and nitrogen dynamics in vineyard

The work aims to investigate the effects of different soil management strategies on carbon sequestration and total nitrogen in areas of vineyards suffering from loss of soil functionality. Treatments, selected for inter-row management, to re-install soil functionality were based on compost or other organic amendments (COMP), green manure (GM), and dry mulching (DM) strategies using winter legumes and cereals. Cover crops were seeded in fall and mown in late spring, leaved in the ground for mulching in DM or incorporated into the uppermost soil layers in GM. Such approaches were investigated in six vineyards in Italy, six in France, and two vineyards in Slovenia and Turkey. The results showed that COMP significantly increased total organic carbon (TOC) and total nitrogen (Ntot) in the topsoil after one year of application. Also DM tends to increase significantly TOC in the topsoil, but only after two years. Modelling 20-year carbon stock dynamics in Italy vineyards, the average increase resulted 0.49, 0.34, 0.21 and 0.03 Mg C ha-1 yr-1 for COMP, DM, GM and control, respectively

L’agroécologie en viticulture: où en sommes-nous?

Report of the workshop "Agroecology and Viticulture" at Bordeaux Science Agro, 14-15 November 2017