Burgos S., Almendros S., Fortier E.
Revue suisse de viticulture arboriculture horticulture 42(5), 288-295, 2010
Terroir studies are common nowadays but few have used precise pedoclimatic measures for evaluating precocity potential. This work aimed (i) to assess the effect of terroir main parameters (soil, climate and topography) influencing phenological vine development and (ii) to evaluate the accuracy of a geostatistic approach using a high number of existing plots (higher variability) to analyze the terroir parameters' impact. Results showed that the plots had different development timing for budbreak and during growing season. Both periods were not influenced by the same pedoclimatic parameters. This emphasizes that the influence of these parameters can vary during the growing season. Some parameters derived from a digital elevation mode, like modelized incoming radiations, seem promising for estimating the precocity potential of the different zones. Finally, the results showed that the observation of numerous vineyards of the practice is convenient to define terroir main factors, despite natural variability or human influence.
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Key words: phenology, mesoclimate, PCA, precocity potential, GIS, terroir
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