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Frost Protection
UCCE Frost Protection Training Units
The two websites below contain narrated training units in a variety of important frost protection topics. These narrated presentations are also available in Spanish. All of these presentations are viewable online in Flash format; you will need audio on your computer to hear the narration.
English versions:
http://lawr.ucdavis.edu/ce_frost_protection.htm
Spanish versions:
http://lawr.ucdavis.edu/ce_frost_protection_spanish.htm
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UC Davis Biometeorology Program Frost Protection Website
Dr. Rick Snyder, Cooperative Extension Biometeorology Specialist, provides detailed frost protection information at the following website:
http://biomet.ucdavis.edu/frost-protection.html
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FAO Frost Protection Publication
A very detailed publication covering all aspects of frost protection is the book titled "Frost protection: fundamentals, practice, and economics" which is available free online at the following website of the UN FAO:
http://www.fao.org/docrep/008/y7223e/y7223e00.htm
A Spanish language version of the above document is available as a free PDF file at the following website:
http://www.fao.org/docrep/012/y7223s/y7223s00.htm
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Assessing and Responding to Winter Cold Injury to Grapevine Buds
The website below created by Dr. Robert Pool at Cornell University discusses winter cold damage to grapevine buds, and has very detailed pictures of the compound bud and how individual buds within the compound bud can be damaged to varying degrees:
http://www.fruit.cornell.edu/grape/pool/winterinjurybuds.html
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Other Frost Protection Resources
Dr. Robert Evans, Supervisory Agricultural Engineer with the USDA-ARS, has written these comprehensive summaries of frost protection science and practice:
Frost Protection in Orchards and Vineyards
The Art of Protecting Grapevines From Low Temperature Injury
Temperature inversion information
The instruction sheet below provides information on how to assemble and install the 35 foot towers that are useful for assessing the temperature inversion conditions at individual sites. These are relatively inexpensive and highly portable, but are not intended for permanent or long-term use.
The December 2011 Grape Notes newsletter provides a detailed example of how the data from these towers can be used to measure inversion conditions and assessing the suitability of wind machines for frost protection.