VASCM: Next VASCM Meeting June 30: Annual BBQ & Potluck with CAFF Meeting on Vine Water Use Issues

[Mary Lindsay]

	Community Alliance with Family Farmers




The next meeting of the Viticulture Association is a joint meeting with 
CAFF - and our annual BBQ/potluck. Here are the details:

*Tuesday, June 30, 2:30pm - 6:30 (or so)**
**at Silver Mountain**
*

*New Perspectives and Tools for Vine Water Use and Saving Water
A Joint program with Community Alliance of Family Farmers (CAFF)* - 
details to come.

Speakers include:

- *Tom Shapland, Tule Technologies*. Tom spoke to us a year ago and is 
returning with an update. Tule has recently installed sensors measuring 
vine water status in several vineyards in the Santa Cruz Mountains 
(Ridge, Muns, Windy Oaks) and is now able to talk about the results they 
are measuring in our region. This presentation will address different 
seasonal stress targets for different production goals (for example, 
quality vs yield), as well as the stress levels and irrigation amounts 
on different soil types in Santa Cruz and other coastal regions.


- *Lars Pierce with CSU Monterey Bay*:  The Vineyard Soil Irrigation 
Model (VSIM) provides free, automated irrigation forecasts. The VSIM 
model couples a canopy ETc model to a soil water balance model to 
estimate daily block water balances.  For each day from Jan. 1, vine and 
cover crop water use (ETc) are calculated as the product of ETo and the 
crop coefficient (Kc).  We then subtract ETc from soil moisture (SMy) 
and add in rainfall (R) and irrigation (I) to estimate the current soil 
moisture (SMd). When estimated soil moisture exceeds field capacity 
(FC), excess water is subtracted from soil moisture to estimate deep 
drainage (D).  From soil moisture we estimate leaf water potential 
(LWP).  As water stress increases, we reduce daily ETc using a Ks scalar 
designed to estimate the effects of water stress on stomatal closure. 
For more information, see the website at 
https://sites.google.com/a/csumb.edu/vsim/ 
<https://sites.google.com/a/csumb.edu/vsim/>.




- *Rich Casale, NRCS:  'The Forgotten Practices' That Help Save Water in 
The Vineyard*
Many if not most water conservation efforts and programs concentrate on 
irrigation practices, improving irrigation system efficiencies, system 
conversions and all sorts of water management and monitoring methods. 
There are, however, many other practices (often overlooked) that can 
help reduce irrigation water use and/or save water.


*The Annual BBQ*:
Will start about 5:00pm following the presentations. Please bring a 
potluck dish to share. Barbecue tri-tip and chicken will be provided 
from The Summit Store, compliments of CAFF.

All are welcome to come to the meeting. As usual, please bring a bottle 
of wine to share.

See directions to Silver Mountain below.

Thank you, and we look forward to seeing you on the 30th.

Regards,
The VASCM Board:
- Mary Lindsay
- Rachel Ormes
- June Salsbury
- Rick Clarke

www.vascm.org

Directions to Silver Mountain:

*From Hwy 1:* Take the Bay/Porter Street exit north (Porter becomes San 
Jose-Soquel)
10.7 miles to right turn on Miller Cut Off
0.9 mile to left turn on Silver Mountain Drive

*From Hwy 17:* Exit onto Summit Rd., turn east on Summit
3.8 miles to right turn on San Jose-Soquel Rd.
0.5 miles to left turn on Miller Cut Off
0.9 mile to left turn on Silver Mountain Drive


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