Technical Report

 

Development of Viticultural Practices to Improve Winegrape Performance Experiment I: Effect of Trellis Type and Canopy Location on Yield Components, Fruit Composition, Fruit Set, and Shoot Morphology in Pinot noir Grapevines 1997-1998 Public Deposited

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  • Five different trellis and training systems were compared in their effect on yield components, fruit composition, fruit set, and shoot morphology in Pinot noir grapevines in 1996 and 1997. This trial was performed on established vines planted on a low-vigor valley floor site, in the Willamette Valley of Oregon. The treatments were: upright vertical, cane pruned (Guyot); upright vertical, spur pruned (Bilateral Cordon); Scott Henry, cane pruned; Lyre, cane pruned; and Geneva Double Curtain (GDC,) cane pruned. The GDC and the Scott Henry had the highest yield, but were not significantly different from the Lyre or Bi-lateral Cordon in 1996. There were no significant differences in yield in 1997. The GDC, Scott Henry, and Lyre had the most clusters per shoot, the GDC had the highest cluster weight and the GDC and Scott Henry had the most berries per cluster in 1996. These differences were not seen in 1997. In 1996, the Scott Henry had significantly higher anthocyanins than did the other systems. There were no significant differences in juice soluble solids, pH, or titratable acidity between the different trellis systems in either year. The three double canopy trellis systems were also evaluated by canopy to determine differences within the vine. In 1996, there were no significant differences in yield components between double canopies within the vine. In 1997, the top canopy of the Scott Henry had a significantly higher titratable acidity and more berries per cluster than did the bottom canopy.
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  • Ratliff-Peacock, J., & Candolfi-Vasconcelos, M. C. (1998). Development of Viticultural Practices to Improve Winegrape Performance Experiment I: Effect of Trellis Type and Canopy Location on Yield Components, Fruit Composition, Fruit Set, and Shoot Morphology in Pinot noir Grapevines 1997-1998. Oregon Wine Advisory Board Research Progress Report.
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  • description.provenance : Made available in DSpace on 2016-02-03T18:51:48Z (GMT). No. of bitstreams: 1 Trellis Type Canopy Location on Yield in Pinot noir Grapevines.pdf: 321459 bytes, checksum: 3f0b50aa13c494a14190d086a0dd4867 (MD5) Previous issue date: 1998
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