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Title: Electrically heated cables protect vine from frost damage at flowering
Contributor(s): Lamb, David (author)
Publication Date: 2008
DOI: 10.1111/j.1755-0238.2008.00034.x
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Abstract: Background and Aims: Current methods of frost protection in vineyards involve fans, air heaters or sprinklers; each is limited by environmental constraints or available water. An alternative, all-electrical technique offers growers wider choice to match options with their vineyard operations. This study evaluates the ability of electrical heating cables, wrapped around the vine cordons, to protect inflorescences from frost damage. Methods and Results: Five heating cable treatments in six replicates were applied to a 2-ha block of Sauvignon Blanc in the southern New England Region of Australia. Vines were subjected to a single −3°C frost event in November 2006 when at approximately 30% capfall. Non-heated vines suffered 41% (Control) and 46% (No heat) inflorescence loss. Those subjected to Low heat suffered a 28% loss, Medium-heated vines suffered a 16% loss and High-heated vines suffered a 13% loss. Qualitative scoring of the vines indicated that more than half of the Medium-/High-heated vines suffered no appreciate damage, whereas all non-heated vines suffered some form of potential crop loss or damage. Conclusion: Electrical heating cables of minimum 10 W/m power rating were found to significantly reduce frost damage to inflorescences at 30% capfall. Significance of the Study: At approximately 43 kW/ha, electrical heating cable offers an alternative frost protection method for small vineyards.
Publication Type: Journal Article
Source of Publication: Australian Journal of Grape and Wine Research, 15(1), p. 79-84
Publisher: Australian Society of Viticulture and Oenology Inc
Place of Publication: Adelaide (SA), Australia
ISSN: 1755-0238
Field of Research (FOR): 050205 Environmental Management
070399 Crop and Pasture Production not elsewhere classified
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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Appears in Collections:Journal Article
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