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Does Conversion to Organic Farming Impact Vineyards Yield? A Diachronic Study in Southeastern France

Abstract : Given the need to reduce pesticide use and rising consumer demand for healthy food, organic vineyard areas have increased since 2000. Converting to organic farming requires numerous changes in pest and disease management, fertilization and weeding techniques. These changes can lead to difficulties in sustaining yields. Some studies have highlighted higher yields in conventional farming than in organic agriculture, but knowledge on yield dynamics during conversion is lacking. A set of 26 plots, under conventional management and in conversion to organic farming, were monitored from 2013 to 2016 in southern France throughout the three-year conversion phase to investigate the dynamics of grape yield and yield components. The survey showed that the yield and yield components remained similar levels as in conventional farming from the third year of conversion. However, the first two years of conversion were a transitional and less successful period during which yield and yield components decreased. Based on the in-depth analysis of the yield components, we have put forwards hypotheses on the processes at play and technical advice that could support winegrowers as they convert to organic farming.
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https://hal.inrae.fr/hal-03079437
Contributor : Christine Riou <>
Submitted on : Tuesday, May 25, 2021 - 9:48:58 AM
Last modification on : Thursday, May 27, 2021 - 5:04:06 PM

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Anne Merot, Nathalie Smits. Does Conversion to Organic Farming Impact Vineyards Yield? A Diachronic Study in Southeastern France. Agronomy, MDPI, 2020, 10 (11), pp.1626. ⟨10.3390/agronomy10111626⟩. ⟨hal-03079437⟩

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