Trials Talks
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
Kevin Sass Moderator Winemaker, Halter Ranch Vineyard
Francois Cordesse Francis Ford Coppola Winery
Francis Ford Coppola Winery Trial Sorting Fruit: Gravity-fed vs. Crusher-destemmer Fed
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.51 3.45.027 First day.53 3.5.028 9 th Day.65 3.47.034 9 th Day.65 3.5.048 2/2/16.55 3.47.049 2/2/16.51 3.55.06
Gravity-fed vs crusher-destemmer fed Gravity Anthocyanins (mg/l) Tannins (mg/l) Total Tannins (mg/l) First day 53 15 115 9 th Day 489 363 1,418 Four Months 370 246 1,346 Crushed-destemmed Anthocyanins (mg/l) Tannins (mg/l) Total Tannins (mg/l) First day 188 52 367 9 th Day 527 655 2,019 Four Months 376 514 (52% more tannins vs gravity) 1,885 (28.5% more total tannins vs gravity)
Keith Orlebeck, South Coast Winery
South Coast Winery Trial Second-Year Regulated Deficit Irrigation
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
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
Irrigation Scheduling Methodology Weekly Irrigation Events 1. Calculate Real Time Crop Coefficient (Kc) Based on Percent Shaded Area (PSA) Kc = PSA X 0.017 2. 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%
Total Water Applied 2014 Total water usage (AF/Acre) T1 T2 T3 0.94 0.65 0.69 2015 Total water usage (AF/Acre) T1 T2 T3 0.86 0.65 0.69 2 Year Total Total water usage (AF/Acre) T1 T2 T3 1.81 1.44 1.50 Total water usage (gallons) T1 T2 T3 306,300 211,803 224,837 29% less 25% less Total water usage (gallons) T1 T2 T3 280,232 211,803 224,837 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
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- 25.6 PH- 3.72 Total Clusters/ Vine Total Lbs. Harvested Pounds Per Vine Harvest Weights Cluster Weight (Oz) Prune Weight Crop-To- Prune Ratio Gallons/ Vine/ Season TA- 0.37 N/A 1715 13.847 N/A N/A N/A 338.64 24Sept Brix- 25.7 PH- 4.04 TA- 0.47 22.5 2,595 14.18 8 2.75 5.15 309.55 01Sep Brix- 25.3 PH- 3.71 TA- 0.37 N/A 1255 9.88 N/A N/A N/A 285.58 24Sept Brix- 24.2 PH- 4.06 TA- 0.45 23 2,510 13.21 9.47 3.13 4.22 232.86 01Sep Brix- 25.1 PH- 3.70 TA- 0.39 N/A 1190 9.224 N/A N/A N/A 289.87 24Sept Brix- 24.7 PH- 4.05 TA- 0.42 23 2,130 10.979 8.7 3.1 3.54 248.51 NOTES: Difference in #vines was to ensure at least 1 ton each treatment ;added row ea. Treatment in 2015. 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.
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.
Thank You
Cameron Parry, Groth Vineyards & Winery
Groth Vineyards & Winery Trial Effects of Closure Oxygen Transmission Rates on Aroma and Flavor Profile
Andrew Schweiger, Schweiger Vineyards
Schweiger Vineyards Trial Stainless Steel vs. French Oak EGG Fermentation
Trials Talks: Schweiger Vineyards
Trials Talks: Schweiger Vineyards
Gina Hennen, Adelsheim Vineyards
Adelsheim Vineyards Trials Selective Sort for Sunburn Removal
Laura Diaz-Munoz, Galerie Wines
Galerie Wines Trial No Shade Cloth vs. Shade Cloth on Sauvignon Blanc
Daniel Daou, DAOU Vineyards
DAOU Vineyards Trial Yeast Selection s Influence on Color Stability and Acidity