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Caractérisation et performances de systèmes de culture et de production en rupture

Abstract : Most of my work has been concerned with the knowledge of the viticultural technical management route and the evaluation of its multiple performances. In a general way, this knowledge has the ambition to contribute to allow the viticulture to make its agroecological transition while maintaining the quality of its grapes and wines, for many Protected Designation of Origin (PDO) in France. To answer to this double constraint, I hypothesized that the vineyard technical management route and the practices that are articulated within it, are central to advance the sustainability of the vineyard systems while perpetuating the quality of grapes and wines. The major contribution of my work lies first in the knowledge and the place of technical management routes. I have described precisely the technical management routes of the vineyard and the practices that constitute it and are articulated in it. To do this, I was interested in the most common vineyard systems in France, but I also tracked down innovative vineyard systems with very low input use that could meet the challenges of the agro-ecological transition in viticulture. This allowed me to co-design with winegrowers and extension agents, vineyard systems that are much more environmentally friendly while maintaining their yield and quality performances. This knowledge also allowed me to characterize the place of the technical management route within the concepts of vineyard terroir and wine typicity, which until then had been regularly focused on the triptych soil, subsoil and climate. The major contribution of my work on the evaluation of vineyard systems is the design and adaptation of methods for evaluating sustainability (environmental, social and economic) and grape and wine quality for viticulture at different scales and with different prerequisites: (i) by enriching the environmental assessment of the specificities of the vine, a perennial crop, in relation to the maintenance of the quality of grape and wine that allow the elaboration of PDO wines; (ii) by producing environmental impact indicators at different spatial scales (plot, farm and watershed); (iii) building a socio-economic evaluation indicator for innovative low-input viticultural systems; (iv) contributing to the aggregation of environmental and quality evaluations; (v) contributing to the adaptation of LCA to viticulture. The tools that I have contributed to develop are usable beyond viticulture and existing production systems. This allows me to build a follow-up to my work. And so, at the end of this thesis, I present the research questions that I wish to address in the continuation of my research work: (i) what are the specificities of innovative viticulture and agricultural systems with very low exogen inputs? and (ii) how to evaluate the sustainability and performance of innovative viticulture and agricultural systems with very low exogen inputs?
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Accreditation to supervise research
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https://hal.univ-lorraine.fr/tel-03295544
Contributor : Marie Thiollet-Scholtus <>
Submitted on : Thursday, July 22, 2021 - 11:09:25 AM
Last modification on : Friday, July 23, 2021 - 3:49:40 AM

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Marie Thiollet-Scholtus. Caractérisation et performances de systèmes de culture et de production en rupture. Agronomie. Université de Lorraine; École doctorale SIReNa - Science et ingénierie des ressources naturelles, 2021. ⟨tel-03295544⟩

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