Kevin Sass Moderator Winemaker Halter Ranch Vineyards

Transcription

1 Trials Talks

2 Trials Talks Kevin Sass Moderator Winemaker Halter Ranch Vineyards Francois Cordesse Francis Ford Coppola Winery Keith Orlebeck South Cost Winery Cameron Parry Groth Winery and Vineyards Andrew Schweiger Schweiger Vineyards Gina Hennen Adelsheim Vineyards Daniel Daou DAOU Vineyards Laura Diaz Munoz Galerie Wines

3 Kevin Sass Moderator Winemaker, Halter Ranch Vineyard

4 Francois Cordesse Francis Ford Coppola Winery

5 Francis Ford Coppola Winery Trial Sorting Fruit: Gravity-fed vs. Crusher-destemmer Fed

6 Gravity-fed vs crusher-destemmer fed Fermentations Time: Crushed-destemmed tank 3 days of cold soak + 11 days of fermentation / Gravity-fed tank 3 days cold soak + 6 days of fermentation Temperature: Crushed-destemmed tank heat spike 13 degrees F higher than gravity fed tank Filterability Gravity-fed: three X more wine able to go through a.45 micron filter. Fining trials Gravity-fed: 30 % less gelatin needed Gravity fed TA(g/100ml) ph VA (g/100ml ac.acid) Crushed- Destemmer TA (g/100ml) ph VA (g/100ml ac.acid) First day First day th Day th Day /2/ /2/

7 Gravity-fed vs crusher-destemmer fed Gravity Anthocyanins (mg/l) Tannins (mg/l) Total Tannins (mg/l) First day th Day ,418 Four Months ,346 Crushed-destemmed Anthocyanins (mg/l) Tannins (mg/l) Total Tannins (mg/l) First day th Day ,019 Four Months (52% more tannins vs gravity) 1,885 (28.5% more total tannins vs gravity)

8 Keith Orlebeck, South Coast Winery

9 South Coast Winery Trial Second-Year Regulated Deficit Irrigation

10 Regulated Deficit Irrigation Strategies for Vineyards Rancho California Water District (RCWD) Justin Haessly University of California Cooperative Extension Carmen Gispert, Keith Orlebeck South Coast Winery Jon McPherson, Tom Stolzer

11 Purpose Project focuses on the use of technologies for implementing Regulation Deficit Irrigation (RDI) as a best management practice for enhancing water use efficiency in local winegrowing operations while improving the quality of red wine grape varieties

12 Irrigation Scheduling Methodology Weekly Irrigation Events 1. Calculate Real Time Crop Coefficient (Kc) Based on Percent Shaded Area (PSA) Kc = PSA X Calculate Irrigation Requirement (IR) Based on Weather Data IR = Eto X Kc 3. Apply the Deficit (D) -Dependent of Treatment D = IR X 10%, 50%, or 100%

13 Total Water Applied 2014 Total water usage (AF/Acre) T1 T2 T Total water usage (AF/Acre) T1 T2 T Year Total Total water usage (AF/Acre) T1 T2 T Total water usage (gallons) T1 T2 T3 306, , ,837 29% less 25% less Total water usage (gallons) T1 T2 T3 280, , ,837 21% less 17% less 1 acre-foot of water: 325,851 gallons 43,560 cubic feet T1 - Sustained 50%ET T2-50%ET from set to veraison and 10% ET thereafter T3-10% ET from fruit set to veraison and 50%ET thereafter

14 RDI Vineyard Data Summary Vineyard/ Varietal/ Vintage Carter Estate/ Tempranillo/ 2014 Carter Estate/ Tempranillo/ 2015 Carter Estate/ Tempranillo/ 2014 Carter Estate/ Tempranillo/ 2015 Carter Estate/ Tempranillo/ 2014 Carter Estate/ Tempranillo/ 2015 Block Total #Vines Treatment 1 (T1) 50% ET throughout the season (No deficit) 124 Treatment 1 (T1) 50% ET throughout the season (No deficit) 183 Treatment 2 (T2) 50% ET from set to veraison and 10% thereafter (late deficit) 127 Treatment 2 (T2) 50% ET from set to veraison and 10% thereafter (late deficit) 190 Treatment 3 (T3) 10% ET from set to veraison and 50% ET thereafter (early deficit) 129 Treatment 3 (T3) 10% ET from set to veraison and 50% ET thereafter (early deficit) 194 Harvest Data 01Sep Brix PH Total Clusters/ Vine Total Lbs. Harvested Pounds Per Vine Harvest Weights Cluster Weight (Oz) Prune Weight Crop-To- Prune Ratio Gallons/ Vine/ Season TA N/A N/A N/A N/A Sept Brix PH TA , Sep Brix PH TA N/A N/A N/A N/A Sept Brix PH TA , Sep Brix PH TA N/A N/A N/A N/A Sept Brix PH TA , NOTES: Difference in #vines was to ensure at least 1 ton each treatment ;added row ea. Treatment in A Crop-Prune Ratio of 5-7 is reasonable; A ratio of 3-5 is preferred for higher quality wines. Example: a vine with 3 lbs. of canes is reasonable to carry 15 lbs. of grapes.

15 Summary Deficit blocks (early and late) received on average 25 gallons/vine less than grower block and on average 51 gallons/vine less than the 50% ET throughout growing season Blocks under RDI showed a reduction of 17% to 29% water applied when compared with the non-deficit block (irrigated at 50% throughout the season) Quantitative assessments of berry and wine attributes in response to water deficit are essential for irrigation scheduling. Regulation of grapevine water relations is an important tool for quality management in irrigated viticulture.

16 Thank You

17 Cameron Parry, Groth Vineyards & Winery

18 Groth Vineyards & Winery Trial Effects of Closure Oxygen Transmission Rates on Aroma and Flavor Profile

19 Andrew Schweiger, Schweiger Vineyards

20 Schweiger Vineyards Trial Stainless Steel vs. French Oak EGG Fermentation

21 Trials Talks: Schweiger Vineyards

22 Trials Talks: Schweiger Vineyards

23 Gina Hennen, Adelsheim Vineyards

24 Adelsheim Vineyards Trials Selective Sort for Sunburn Removal

25 Laura Diaz-Munoz, Galerie Wines

26 Galerie Wines Trial No Shade Cloth vs. Shade Cloth on Sauvignon Blanc

27 Daniel Daou, DAOU Vineyards

28 DAOU Vineyards Trial Yeast Selection s Influence on Color Stability and Acidity