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Title: Using Grape Leaf Reflectance for Spatially Variable Vineyard Management
Contributor(s): Brown, Ralph B (author); Lamb, David  (author)
Publication Date: 2004
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Abstract: Spectral reflectance of grape leaves was measured over the range of 450-2400 nm. Reflectance spectra of leaves from healthy and phylloxera-infested vines were compared and significant differences were noted in the visible part of the spectrum. A Green-Red Ratio (GRR) was evaluated to distinguish between the two groups of leaves. The GRR was also tested against leaves of different nitrogen tissue levels from otherwise healthy vines. While showing a positive correlation with leaf nitrogen content, the relationship was not significant for effective diagnostic use.
Publication Type: Conference Publication
Conference Details: 2004 ASAE/CSAE Annual International Meeting, Ottawa, Canada, 1 - 4 August, 2004
Source of Publication: Presented at the 2004 ASAE/CSAE Annual International Meeting
Publisher: ASABE: American Society of Agricultural and Biological Engineers
Place of Publication: United States of America
Field of Research (FOR): 090903 Geospatial Information Systems
Socio-Economic Objective (SEO): 820306 Wine Grapes
HERDC Category Description: E2 Non-Refereed Scholarly Conference Publication
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