Lookup NU author(s): Dr James Taylor
This is the authors' accepted manuscript of an article that has been published in its final definitive form by American Society for Enology and Viticulture, 2017.
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Goals: This report aims to present a clear protocol to (a) deploy proximal canopy sensors into single high-wire trellis vineyards and (b) to convert the canopy sensor response into an indication of vine size (pruning weight). The protocol is designed to be robust and practical for easy adoption in commercial systems. Evidence will be presented of the efficacy of vine size prediction using the protocol in multiple research and commercial vineyards over two seasons and the advantages, disadvantages and expected outcomes discussed. Key Findings: The protocol performed well in over 80 % of cases with deployment by a variety of growers and pruning crews. It permitted growers to generate maps of actual vine size within vineyards. This provides a valuable indication of the current site-specific production potential and a baseline to assess changes in vine size over time. In a few vineyards, the proposed simplified calibration process did not generate any clear relationship between the canopy response and vine size. This indicates that the protocol is dependent on effective local validation. Impact and Significance: Managing vine size is critical to the long-term sustainability of cool climate viticulture. It is also critical to managing quality in all viticulture systems. However, convincing growers to routinely measure vine size has historically been difficult due to the time involved and the noise in the data. The proposed protocol uses technology and targeted sampling to minimize the effort required and presents more coherent information that growers can quickly react to, so that the value of information outweighs the cost of collection. It should therefore promote the continual measurement and ultimately management of vine size variation within vineyards.
Author(s): Taylor JA, Link K, Taft T, Jakubowski R, Joy P, Martin M, Hoffman J, Jankowski J, Bates TR
Publication type: Article
Publication status: Published
Journal: Catalyst: Discovery into Practice
Print publication date: 01/08/2017
Online publication date: 06/06/2017
Acceptance date: 01/05/2017
Date deposited: 12/07/2017
ISSN (electronic): 2469-7974
Publisher: American Society for Enology and Viticulture
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