Effect of row orientation, trellis type, shoot and bunch position on the variability of Sauvignon Blanc (Vitis vinifera L.) juice composition

摘要

Background and Aims: Variation in grape berry composition around the mean has seldom been studied in its own right. From the perspective of the researcher and the viticulturist, increased variation requires greater replication to achieve good estimates of composition. Bunch position on the vine, berry position on the bunch and/or vine location in the vineyard may all contribute to differences in composition (TSS, titratable acidity, pH and malic acid) between berries. Our aim was to understand how variation may be influenced by maturity, row orientation and vine training.