Water Content Levels of Wine Grape Berries
Agricultural Electronics Corporation Home Page
Over the years the Phytogram has been used to compile and process Berry Water Content statistics. Such measurements were developed over the entire growing season, 24/7. This has enabled Irrigation Managers to review plant-based site status via the Internet. From this experience, the Agricultural Electronics Corporation is able to suggest hydration level ranges for specific crops. All values are expressed in nfd/mm (nanofarads per millimeter) - U.S. Patent 6,870376B1.
To schedule berry ripeness and flavor the Viticulturist or Irrigation Manager would hold the hydration level within a specific range during the two to three week flavor intensification period prior to harvest. Experience with the Phytogram has shown these berry hydration levels to be:
Chardonnay ............... 14-17 Nanofarads/millimeter
Cabernet Sauvignon ....12-15
Pinot Noir ..................10-14
Pinot Grigio ................10-12
Syrah .......................... 8-10
These ranges are based on results from over fifty berry-block seasons.
See also a more thorough discussion of "Quantification of Berry Ripening, Flavor Development and Harvest Time by Means of the Phytogram by William Gensler, October, 2006 (Berry Ripening Paper))
See altenative irrigation management method "Ontogenetic Irrigation Scheduling" based on development cycle of the fruit.
|PHYTOGRAM - Applications and specifications||Automatic Point and Band Dendrometers - For precise measurements of growth|
|POD - In-the-field solar powered data collection computer operating over extended period of time in various environmental conditions||Manual Band Dendrometers - Schematic drawing and product characteristics|
|Equipment Cost and Support Services - Products, Services, and typical Research Packages||Automatic Root Dendrometers - For measurement of diurnal cycles and growth rates of roots near the surface.|
|Ontogenetic Irrigation Scheduling- When to water and how much to water based on plant development over four seasons||Dendrometer User Group Pages|
|Data Transfer Methods - Various alternatives- primarily cell phone and radio communication capabilities|
|Water Content Levels of Wine Berries- for wine industry, using the Phytogram for indicator of hydration status and berry ripeness|
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