Within-field variability can be managed through Precision Viticulture (PV) protocols aiming at identifying homogeneous zones and addressing site-specific operations including selective harvesting (SH). Several authors demonstrated SH profitability in extensive viticulture while very little information is available within the Italian context, characterized by hillside locations, relatively small plots and significant within field variability.
Matteo Gatti from the Department of Sustainable Crop Production of UCSC, Piacenza, presents the results of research focused on two experiments that were conducted: the first, focused on variable rate fertilization, and the second, related to selective harvesting.
Based on a NDVI-derived vigor map, a 3-year study was performed in a mature Barbera vineyard from Colli Piacentini. Ground-truthing of 3 vigor zones encompassed soil properties, canopy growth, yield and fruit composition. Experimental wines were made and sensory analysis performed for comparing vigor classes. Which were the differences detected between HV, MV and LV wines?
In addition to this, a professional-targeted survey aimed at explaining technical and economic potential of SH was carried out.
Video of the seminar held during Enoforum USA 2021 (4-5 May 2021)
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