Abstract
The delineation of zones within a vineyard is one of the main goals of precision viticulture, and focuses on searching areas with homogeneous features in relation to one or more parameters relevant to grape composition. Definition of zones can be very useful for winery management, allowing the realization of specific cultural practices at each zone, and segregating grapes according to their quality potential. The aim of this work was to evaluatethe oenological significance of zones delineated using normalized difference vegetation index (NDVI) images or shoot cross-sectional basal area (SCSA) in combination with bunch number (BN) measured on site, pooling data from 4 non-contiguous vineyards with different training systems and plant spacing. The delineation of zones was carried out using ‘fuzzy k-means’ analysis on two different combinations; NDVI with BN data and SCSA with BN data. The results obtained showed that this zone delineation was satisfactory even when relatively distant vineyards with diversity of training systems and plant spacing were considered.
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