COVID-20 Virtual Tuesday Timely Topics

    We have two remaining Zoom webinars scheduled for August 11 and August 25 at 4:30pm.

                    Pre-registration required.  One registration covers both webinars.

August 11, 2020 - Biology and Management Post-Veraison Fruit Rots

Botrytis bunch rot and sour rot are important issues in susceptible varieties starting at veraison.  Join us for a discussion about the diseases, the role of climate (particularly warm, humid nights), insects, and vine microclimate (cluster exposure) have on influencing disease incidence and severity.  Management that combines risk assessment and cultural practices with appropriate, well-timed insecticides and fungicides will be discussed.  Please feel free to submit questions in advance.  We will address as many as possible during the webinar.

Click here to submit your questions about Botrytis and Sour rot. 

August 25, 2020 - Cation Exchange and Other Winemaking Practices for Dealing with High pH and High TA Fruit and Wines

Wines with both a high pH and high titratable acidity (TA) are problematic due to their likelihood of fault development.  Most interventions to reduce either pH or TA would be exacerbated by the other parameter.  Cation exchange is an effective treatment to reduce wine pH while minimally increasing TA.  In trials conducted with Norton, Chambourcin, Valvin Muscat and Syrah, cation exchange reduced wine pH by exchanging K+, Ca+2, and Na+ cations with H+.  Please feel free to submit questions in advance.  We will address as many as possible during the webinar.

Click here to submit winemaking questions to Chris and Misha