41st annual meeting of the ASEV.

There will be 31 technical sessions, with subjects ranging from sulfur dioxide to Cabernet Sauvignon clones at the 41st annual meeting of the American Society for Enology and Viticulture to be held june 28-30 at the Los Angeles Convention Center. Besides the technical sessions, there will be

The workshops will be held june 27, the day before the official opening of the show on Thursday. Registration for the workshops is limited to 75 people. Workshop I will be held from 9 a. m. to 5 p. m. in the Los Angeles Room of the Hilton Hotel (the official headquarters hotel) and will be on problem fermentations. The workshop was organized by Prof. Linda F. Bisson of the U.C., Davis department of Viticulture and Enology. Other participants include Profs. Ralph E. Kunkee and Roger Boulton of Davis and Prof. Thomas Henick-Kling of Cornell.

Workshops 11 on Vine Water Use will run concurrently in the Garden West Room of the Hilton. It will be coordinated by Dr. Daniel Roberts of Sterling Vineyards. Other participants include Tucker Catlin, Sterling Vineyards; Profs. Mark Matthews, Michael Mullins and Richard Snyder, U.C. Davis; Jim Frisinger, Beringer Vineyards; Daniel Bosch, Robert Mondavi Winery; Dr. Larry Williams, Kearney Agricultural Station; Dr. Larry Swancki, Extension Irrigation Specialist, U.C., Davis; Dr. Terry Pritchard, Extension Soils and Waters Specialist and Craig Williams, Joseph Phelps Winery.

There will also be a forum on Phylloxera and Rootstocks Friday at 9 a.m., moderated by Ed Weber, U.C. Viticulture Farm Advisor for Napa County.

The Champagne Reception and awards banquet honoring Robert Mondavi, this year's winner of the ASEV merit award and a former Wine Industry Technical Symposium man of the year, will be Saturday night at the Hilton hotel. A dance will follow with music provided by [H sub.2].

The James F. Guymon lecturer this year is Edward A. Crowell and the Honorary Research Lecturer is Dr. Harold Olmo.

There will be a golf and tennis tournament on Wednesday.

Technical Program

ENOLOGY

THURSDAY 9:20-9:40 - Clark R. Smith. Minimum Sulfur Dioxide Odor Differences Detected by Individual Subject in the Headspace Above a White Wine 9:40-10:00 - Uli Fischer. Effects of Ethanol and pH on Sourness, Bitterness, and Astringency 10:00-1 0:20 - Rose-Marie Canal. Aroma Enhancement of Wines with Glycosidases 10:20-10:40 - A.C. Noble. Changes in Free and Glycosidically Bound Terpenes as a Function of Fermentation, Wine Aging, and Enzyme Treatment 11:00-11:20 - Claus Prahl. Viniflora A New Way of Inducing Malolactic Fermentation in Must by Direct Inoculation with Homofermentative Lactobacilli 11:20-11:40 -Donald J. Cox. The Effect of the ATP Pool and Energy Charge on Malate Dependent ATP Synthesis in Lactobacillus plantarum 11:40-12:00 - Thomas Henick-Kling. Energy Production From Malolactic Fermentation (Conversion) and Growth at Low pH 2:30-2:50 - Francisco F. Monteiro. Amino Acid Consumption and Release by Saccharmyces During Fermentation of Grape Juice 2:50-3:10 - Danmei An. Urea Excretion and Uptake From Yeast as Affected by Various Factors 3:10-3:30 - Michael R. Murtaugh. Precipitation of the Calcium Salts of Malate and Tartrate from Model Solutions 3:30-3:50 - Michel Valade. Control of Malolactic Fermentation in Champagne

SATURDAY 10:00-10:20 - Manfred Hoffmann. Crossflow Microfiltration for the Prefiltration of Wine 10:20-10:40 - Ralph E. Kunkee. A Report on Current and Emerging Problems of Microbiological Spoilage in California Wines 10:40-1 1:00 - Clark R. Smith. Studies of Sulfur Dioxide Toxicity to Two Wine Yeasts 11:00-11:20 - Noel M. Fong. Expression of Bovine-Casein by Saccharomyces During Vinification Fermentations 11:20-11:40 - Linda F. Bisson. Sensory Effects and Fermentation Differences of Eleven Commercial Wine Yeasts in Chenin Blanc Juice

VITICULTURE

THURSDAY 9:20-9:40 - Porter B. Lombard. Giberelic Acid Sprays on Pinot Noir Increase Cluster Looseness By Reduction of Set and Berry Size 9:40-10:00 - Charles F. Krauter. Water Management Using Infrared Thermometry Techniques Adjusted for Different Grape Varieties 10:00-10:20 - Amos Naor. Leaf Water Potential as a Criterion for Irrigation Control in Wine Grapes in Israel 10:20-10:40 - William L. Peacock. Influence of Nitrogen Fertilizer Timing on Grapevines in the San Joaquin Valley 11:00-11:20 - Steven F. Price. The Effects of Vigor Diversion on Pinot Noir Vine Growth, Fruit Set, and Grape Composition 11:20-11:40 - Charles MacGregor. Effect of Vertical Shoot Height on Berry and Cluster Characteristics 11:40-12:00 - W. Mark Kliewer. Relative Performance of Mature French Colombard Vines Converted From a Single Canopy Bilateral Cordon to Divided Canopy GDC and Lyre Trellis Systems 2:30-2:50 - Albert F. Elboudwarej. Measurement of Transpiration of Different Parts of Grape Clusters 2:50-3:10 - Albert F. Elboudwarej. Modified Atmosphere Packaging and Humidity Conrol of Packaged 'Himrod' Table Grape 3:10-3:30 - Douglas 0. Adams. Effect of Sulfhydryl Reagents on the Activity of Malic Enzyme (E.C. 1.1.1.40) Isolated From Grape Berries 3:30-3:50 - Robert L. Wample. Heat Tolerance and Heat Shock Response of Dormant Vitis Vinifera Cuttings

SATURDAY 10:00-10:20 - Dan 0. Chellemi. Influence of Leaf Removal and Fruit Maturity on Incidence and Severity of Grape Powdery Mildew 10:20-10:40 - James A. Wolpert. Performance of VR Hybrid Rootstocks in a Fanleaf Virus Infested Site in Napa Valley 10:40-11:00 - Daniel Roberts. Interaction of Rootstock and Soil Texture on Merlot Growth and Wine Characteristics 11:00-11:20 - Richard T. Nagoaka. The Influence of Rootstock on Vine Performance and Wine Quality of Cabernet Sauvignon II 11:20-11:40 - W. Mark Kliewer. Comparison of the Performance of Cabernet Sauvignon Clones at Davis and Oakville

Poster Presentations Posters will be on display Thursday, from 12:00 noon to 4:00 p. m. and Friday, from 9:00 a.m. to 4:30 p.m. Authors will be present to answer questions only on Friday, June 29 from 2:30 - 4:30, P 1 - Richard M. Blazer. Influence of Environment on the Evaporation Rate of Wine From Barrels P 2 - Carlos E. Daudt. Dithane M-45 (Mancozeb) Residues and Some Minerals in Musts and Wines P 3 - Reiner Stenske. New Large Surface Area Filter Cartridges for the Prefiltration of Wine P 4 - R. Scott Rich. Part VI. Studies of Wine Characteristics Resulting from Various Viticultural and Wine Producing Options for Six Varieties of Grapes Grown in the Dunnigan Hills in 1989 P 5 - Kathryn C. Weiss. Analysis and Removal of Proteins Causing Haze Formation in Wine P 6 - Gary Main. Must Treatments to Reduce Browning in Riesling and Vidal Wines P 7 - Richard Degre. Computerized Wine Yeast Strains Identification by DNA Fingerprint P 8 - C.S. Ough. Amino Acid Uptake by Four Commercial Yeasts at Two Different Temperatures of Growth and Fermentation P 9 - Zhixian Huang. Determination of Amino Acids from Commercial Juice and Wine Samples P 1 0 - Jeff Porter. New Membrane Filtration for the Beverage Industry P 11 - Anthony Aveni. Considerations in

Daily Schedule

Wednesday Friday

June 27 june 29

7:00 8:00-5:00

Golf Tournament Registration

Industry Hills Golf Course Convention Center

8:30-11:30 8:00-9:00

Tennis Tournament Exhibitor Continental Breakfast

Women's & Men's Doubles Convention Center

YMCA Tennis Facility 8:30-11:30

World Trade Center Tennis Tournament

9:00-12:00 Finals Workshops I & II (concurrent) 9:00-10:50

Hilton Hotel Forum

10:00-4:00 Convention Center

Registration 9:00-4:30

Convention Center Poster Sessions

11:30-1:00 Convention Center

Publications Committee (Authors present 2:30-4:30)

Luncheon - Hilton Hotel 10:00-5:00

1:30-5:00 Exhibits Open Workshops I & Il concurrent) 11:00-12:00

Hilton Hotel James F. Guymon Lecture

1:30-5:00 Convention Center Board of Directors Meeting 12:00-1:30

Closed Meeting Scholarship Luncheon

7:00-8:00 Hilton Hotel Board of Directors Reception 1:30-2:30

By Invitation Only Merit Award Lecture

8:00-10:00 Robert Mondavi

Board of Directors Dinner Convention Center

By Invitation Only 5:00-6:30

Thursday Davis Enology & Viticulture

june 28 Alumni Assoc. Wine Social

8:00-5:00 Hilton Hotel

Registration Saturday

Convention Center june 30

8:30-11:30 9:00-12:00

Tennis Tournament Registration

Mixed Doubles Convention Center

9:00-9:15 9:00-10:00

President's Welcome Continental Breakfast

Convention Center for Exhibitors & Attendees

9:20-12:00 Convention Center

Oral Sessions-Concurrent 9:00-12:00

Convention Center Exhibits Open

10:00-4:00 10:00-11:40

Exhibits Open Oral Sessions

Convention Center Convention Center

12:00-4:00 11:45-12:45

Poster Sessions Annual Business Meeting

Convention Center Convention Center

12:00-1:30 6:30-7:30 Technical Projects Committee Champagne Reception

Luncheon - Hilton Hotel Hilton Hotel

1:30-2:30 8:00-10:00 Honorary Research Lecturer Awards Banquet

Convention Center Hilton Hotel

2:30-4:30 10:00-12:00

Oral Sessions Dance & No-host Bar

Convention Center Hilton Hotel

6:00-7:30

Exhibitors Wine Reception

Convention Center