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    Investigating the consequences of trimming and crop removal on soluble solids and titratable acidity for Sauvignon Blanc and Pinot Noir

    Parker, Amber; Hofmann, Rainer; van Leeuwen, C.; McLachlan, Andrew R.; Trought, Michael C.
    Abstract
    Trimming vines and crop removal are vineyard management practices grapegrowers use to manage yield, control vegetative growth and vigour. However, these techniques may impact on berry composition at harvest. Trimming and crop removal alter the source-sink balance of the vine: trimming removes leaves, reduces the source of photosynthates needed for berry ripening, while removing crop reduces the sink demand for photosynthates and other assimilates. Grape composition at harvest is a result of an accumulation or decrease in berry components throughout the ripening phase. It is important, therefore, to understand how trimming and crop removal alter the development of berry ripening. The time of trimming or crop removal may also influence the outcome. For example, lower total soluble solids (TSS) at harvest may be due to a slower rate of TSS accumulation, a delay in the start of ripening or both. Would trimming at veraison have the same effect and are other components such as titratable acidity also altered in the berry?... [Show full abstract]
    Keywords
    viticulture; vine; trimming; crop removal; soluble solids; titratable acidity; Sauvignon Blanc; Pinot Noir; New Zealand; yield; vegetative growth; vigour; development; berry components; ripening; leaf area; fruit; ratio; fruitset; veraison; accumulation; weight
    Fields of Research
    070604 Oenology and Viticulture; 0703 Crop and Pasture Production; 0706 Horticultural Production
    Date
    2015-09
    Type
    Journal Article
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    • Department of Wine, Food and Molecular Biosciences [716]
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    2015 Parker_et_al_SeptOct15_Wine&Viticulture_Journal.pdf
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    © Winetitles Media Pty Ltd (Division of Provincial Press Group). All Rights Reserved.
    Citation
    Parker, A.K., Hofmann, R.W., van Leeuwen, C., McLachlan, A.R.G., & Trought, M.C.T. (2015). Investigating the consequences of trimming and crop removal on soluble solids and titratable acidity for Sauvignon Blanc and Pinot Noir. Wine and Viticulture Journal, 30(5), 40-42.
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