The effects of nitrogen, tillage and irrigation on the color of Willamette Valley Pinot noir wine Public Deposited

http://ir.library.oregonstate.edu/concern/honors_college_theses/f4752m99v

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Various vineyard practices influence the quality of a wine. In 1999, three levels of nitrogen (N), two levels of tillage and two levels of irrigation were applied to Pinot noir grape cultivars at Benton Lane Vineyards in the Southern Willamette Valley. N treatments were zero, soil and foliar applications. Every other row was tilled by machine. Those vines that were irrigated received 0.5 gal/hr of water for 200 hours during ripening in August. The grapes were harvested and wines were fermented from three replicates of each treatment. Spectrophotometric readings at 420nm and 520nm were used to determine the "Color Intensity" and "Hue." Ten untrained but experienced panelists rated the "Overall Color Intensity," "Purple Hue," and "Garnet Hue" of the wines using a traditional 16-point intensity scale. The panelists' intensity ratings indicated that N and irrigation had a significant effect on the Overall Color Intensity and Purple Hue of the wine. There were no significant differences in Garnet Hue intensity among the wines. The instrumental results were correlated with the panelists' ratings and clearly indicated that a direct correlation exists between the measured Color Intensity and the sensory analyses of Overall Color Intensity and Purple Hue. Soil N application and no irrigation contributed most to the high color intensity of Willamette Valley Pinot noir wine studied.
License
Resource Type
Date Available
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Non-Academic Affiliation
Rights Statement
Publisher
Peer Reviewed
Language
File Format
File Extent
  • 570812 bytes
Digitization Specifications
  • Master files scanned at 600 ppi (256 Grayscale) using Capture Perfect 3.0 on a Canon DR-9080C in TIF format. PDF derivative scanned at 300 ppi (256 B+W), using Capture Perfect 3.0, on a Canon DR-9080C. CVista PdfCompressor 3.1 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Made available in DSpace on 2007-12-11T17:34:30Z (GMT). No. of bitstreams: 1Helms_Kel.pdf: 570812 bytes, checksum: 72303964ba5fe1a3e0dd32d473cab170 (MD5)
  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2007-12-11T17:34:30Z (GMT) No. of bitstreams: 1Helms_Kel.pdf: 570812 bytes, checksum: 72303964ba5fe1a3e0dd32d473cab170 (MD5)
  • description.provenance : Submitted by Sara MIntonye (smscanner@gmail.com) on 2007-12-10T17:58:24ZNo. of bitstreams: 1Helms_Kel.pdf: 570812 bytes, checksum: 72303964ba5fe1a3e0dd32d473cab170 (MD5)

Relationships

Parents:

This work has no parents.

Last modified

Downloadable Content

Download PDF

Items