Cet article présente le nouveau cadre conceptuel d’évaluation de la durabilité de l’exploitation agricole développé dans la méthode IDEA v4. Il combine une approche évaluative basée sur les objectifs assignés à une agriculture durable et une évaluation des propriétés des systèmes agricoles durables. Il s’ancre dans le champ de la durabilité forte, de la multifonctionnalité et prend en compte les enjeux globaux d’une agriculture durable. Ce cadre conceptuel a permis de construire 53 indicateurs permettant d’analyser la durabilité de l’exploitation agricole selon ces deux approches complémentaires. La première évalue la durabilité en organisant ces 53 indicateurs selon les 3 dimensions normatives du développement durable (agroécologique, socio-territoriale, économique), structurées en 13 composantes ; l’évaluation repose sur un système de notation basé sur 100 unités de durabilité pour chacune des 3 dimensions qui ne se compensent pas entre elles. La seconde évalue la durabilité en organisant les 53 indicateurs selon les 5 propriétés des systèmes agricoles durables (autonomie, robustesse, capacité productive et reproductive de biens et services, ancrage territorial et responsabilité globale) qui sont structurées de manière arborescente en 15 branches ; l’agrégation des indicateurs y suit une démarche qualitative et hiérarchique mobilisant l’outil DEXi. Le potentiel pédagogique du concept de propriétés des systèmes favorise une approche transdisciplinaire de l’exploitation agricole. À la suite de ses trois précédentes versions, IDEA v4 renouvelle son potentiel d’usage pour accompagner la transition agroécologique.

Purpose This study aims to analyze the wine industry’s response to changing societal attitudes towards the environment. Environmental considerations are now an increasingly important factor in both production and purchasing behavior. While many eco-certifications exist, there is still consumer confusion between the multitude of eco wine certifications, lack of clarity about what consumers think about the wines, and not enough data about their willingness to pay (WTP) for these environmental characteristics. Design/methodology/approach This study clarifies what the various wine eco certifications are, quantifies consumer knowledge and ascertains their WTP for five environmental or sustainable wine certifications, namely, biodynamic, fair trade, organic, natural and sustainable. The authors surveyed 456 wine drinkers in the USA. Findings The authors found that millennials, women, unmarried individuals, those purchasing eco-certified foods, low-income individuals and those looking to celebrate a special occasion have a higher WTP for eco-certified wines compared to respondents who are older, male, married, do not buy eco-certified goods, have higher incomes and are purchasing the wine for a regular occasion. They recommend marketing and targeting those in the former group for environmental or sustainable wines. Originality/value The study is the only research project, of this kind, to evaluate five types of eco-certifications for wine in a single WTP analysis.

An increasing number of vineyards are converting to organic farming due to concerns about the environmental impacts of agriculture. How difficult this shift is depends on farms' biophysical and economic situations as well as on their specific dynamics. Methods to analyze, assess, and support transition strategies are needed. In this context, the hypothesis can be made that the efficiency-substitution-redesign approach, which is used for describing the level, intensity, and speed of changes made by vineyards, could be used to classify transition strategies. On-farm interviews and surveys were conducted at vineyards in conversion to organic farming in two French winegrowing regions: Languedoc and Bordeaux. The agronomic changes made to various grape production technical operations during the conversion period were described and assessed by using the efficiency-substitution-redesign approach. Potential economic consequences of conversion were measured by looking at farms' accounting records. Considering the high number of variables taken into account in the detailed analysis of each operation for the conversion to organic farming, the efficiency-substitution-redesign approach was successfully used to classify transition strategies according to the type of changes made. The results showed that change intensity varied between farms with no clear correlation between the type of changes and economic consequences. Farm trajectories were then correlated to the speed and intensity of changes with quantitative transition indicators. Here, a quantitative application of the efficiency-substitution-redesign approach was used for the first time to assess and classify organic farming conversion strategies according to a scale of change intensity and speed of changes. These results are essential to enhance understanding of what happens during conversion to organic farming and to better support winegrowers' trajectories.

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Grapevine curettage was re-introduced in France in the early 2000s, and is important for facilitating recovery of plants from esca disease. This surgical practice involves removal of deadwood of vines with leaf symptoms, focusing on white rot generally observed at the centres of grapevine trunks. Assessment of the efficacy of this practice was initiated in the Bordeaux region in 2014. One ‘Sauvignon Blanc’ vineyard severely affected by esca was initially surveyed in the summer of 2014, to identify and treat vines with esca foliar symptoms. Annually thereafter, from 2014 to 2018, selected vine stocks were curetted. Two other ‘Sauvignon Blanc’ vineyards also displaying high levels of esca damage were added to the study in 2015 and 2016. Curettage treatments ceased in 2018, resulting in 11 trials (vineyard × year combinations). In total, 856 vines (422 curetted and 434 control vines) were then surveyed annually up to 2021, for assessments and comparisons of esca development. At each site, plants with esca symptoms recovered well after curettage: on average 85% of all curetted vines became asymptomatic the year immediately after the treatment. Six years after treatment, for curettage campaigns carried out in 2014 and 2015, more than half of the curetted vines were symptom-free, whereas <12% of the control vines were asymptomatic, and gradual loss of efficacy was observed at each site. The mean annual proportion of efficacy erosion was approx. 8% per year. This study highlights the possible short- and mid-term benefits of trunk surgery to enable recovery of esca-affected vines, and for them to recover and remain leaf-asymptomatic for several years.

Sustainability in production and consumption is increasing in importance in many diverse industries worldwide. The wine industry is no exception. There are many wine-related eco-certifications that incorporate sustainability concepts; however, it is unknown to what extent wine consumers value such certifications in wine-producing countries such as Chile. An online survey was conducted in which 526 Chilean wine consumers were asked about their attitudes towards and willingness to pay for sustainably produced wines. Statistical analysis was undertaken using multiple linear regression. It is notable that 76% of respondents had previously purchased eco-certified wines (fairtrade, biodynamic, organic, natural, and sustainable), and there was an evident willingness to buy eco-certified wines in the future—78% expressed a willingness to buy organic wines, and 77% sustainable wines. Furthermore, we asked how much more willing the respondents would be to pay for wines with eco-certification; 22% indicated that they would be willing to pay a premium price, ranging from USD 5 to USD 16 more, for organic wines, while 19% expressed a willingness to pay the same price premium for sustainable wines.

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