Extension Service Site Publications

• (2023) Pinot leaf curl disorder Pinot leaf curl is a physiological disorder of wine grapes marked by characteristic foliar symptoms early in the season. It may be associated with prolonged cool temperatures and disruption of typical nitrogen metabolism in developing shoots.
• (2022) Managing grapevines during a heat spike Oregon grape growers face challenges as the frequency and severity of extreme heat events increase due to climate change. Here's how grape growers can protect their crops during a heat wave.
• (2021) Testing and Tracking the Spread of Grapevine Red Blotch Virus in Oregon Vineyards Grapevine red blotch virus (GRVB) is one of about 80 viruses infecting wine grapes worldwide. It may affect fruit ripening and thus impact the quality of finished wines. GRBV incidence increased from two to 10 times annually in the Willamette Valley and Southern Oregon vineyards sampled and studied from 2014 to 2016
• (2018) Scheduling Irrigation with a Pressure Chamber Part 1 How to use a pressure chamber as a tool to help you schedule irrigation in wine grape vineyards.
  The two most important questions you need to
  answer for irrigation scheduling are “How much?”
  and “When?” The pressure chamber is an important
  tool that can be used to determine when you should
  irrigate.
  Part 1 of 2
  http://owri.oregonstate.edu
• (2018) Alex Levin, Viticulturist Alex Levin is an assistant professor of viticulture with Oregon State University’s Department of Horticulture. He's also a core researcher with the Oregon Wine Research Institute at the Southern Oregon Research and Extension Center in the Rogue Valley. He works with vineyard managers who are growing grapes for this area’s booming wine industry. Southern Oregon is the fastest-growing wine grape producing area in the state.
  
  Special Thanks to:
  Bill Boggess, Executive Associate Dean, OSU College of Agricultural Sciences
  Danielle Gabriel, inspiration for OWRI research video series
  
  https://owri.oregonstate.edu/
• (2018) Scheduling Irrigation with a Pressure Chamber Part 2 Step by step instruction on how to use a pressure chamber as a tool to help you schedule irrigation in wine grape vineyards. Dr. Alexander Levin walks through the steps of using a pressure chamber to measure leaf water potential and stem water potential.
  Part 2 of 2
  http://owri.oregonstate.edu
• (2018) How to monitor the water needs of grapevines with and without irrigation In most years, vineyards in Oregon start the season with a full soil water profile. As the season progresses, the soil dries out. Here's how to gauge a vineyard's water needs and methods for meeting them.
• (2018) Scheduling Irrigation with a Pressure Chamber (Part 2) Step by step instruction on how to use a pressure chamber as a tool to help you schedule irrigation in wine grape vineyards. Dr. Alexander Levin walks through the steps of using a pressure chamber to measure leaf water potential and stem water potential.
  Part 2 of 2
• (2018) Scheduling Irrigation with a Pressure Chamber (Part 1) How to use a pressure chamber as a tool to help you schedule irrigation in wine grape vineyards. The two most important questions you need to answer for irrigation scheduling are “How much?” and “When?” The pressure chamber is an important tool that can be used to determine when you should irrigate.
  Part 1 of 2