Abstract
Own-rooted Chancellor vines were trained to five training treatments [Geneva Double Curtain (GDC); Hudson River Umbrella (HRU); 6-arm Kniffin (6AK); midwire cordon (MWC); Y-trellis (YT)] and three vine spacings (1.4, 1.8, and 2.4 m). Weight of cane prunings (vine size) per m canopy length was nearly optimal in the GDC and YT systems, but was excessive in the other three training treatments. Increased vine spacing decreased vine size on a per meter of row basis. Yields of divided canopies (GDC and YT) averaged 42% higher than non-divided systems, but cluster weights and berries per cluster tended to be lower in the divided canopies. The GDC system produced fruit with lowest °Brix, but also with lowest titratable acidity (TA) and pH, and highest anthocyanin content. Vine spacing had a limited influence on yield and fruit composition, but interacted with training system on some components. HRU training led to lower cluster exposure, but with higher leaf and cluster temperatures, lower leaf diffusive resistance, higher transpiration rate, and lower midday leaf water potentials than GDC training.
- Copyright 1995 by the American Society for Enology and Viticulture
Sign in for ASEV members
ASEV Members, please sign in at ASEV to access the journal online.
Sign in for Institutional and Non-member Subscribers
Log in using your username and password
Pay Per Article - You may access this article (from the computer you are currently using) for 2 day for US$10.00
Regain Access - You can regain access to a recent Pay per Article purchase if your access period has not yet expired.
Vol 46 Issue 1
