Description

Fungicide resistance to Powdery mildew and Botrytis bunch rot is a growing concern for grape producers. Developing spray programs that focus not only on disease management, but also fungicide resistance mitigation can be challenging. This workshop is designed to assist beginner crop consultants, vineyard managers or anyone who writes or recommends fungicide programs, with developing a fungicide spray program for wine grapes in Oregon or Washington, with a focus designing programs that adhere to fungicide stewardship principles.

Preregistration is required. Registration closes Monday, March 28th.

• Held in-person in the Columbia Room at the Best Western Plus Hood River Inn, Hood River, Oregon
• Register for Tuesday, April 5th: please click here
• The event will be from 9:00 AM – 4:30 PM Pacific Standard Time.
• Registration will be limited to 50 people.

Cost: $45, covers workshop packet, speakers, and lunch

There will be 6 WSDA Pesticide Applicator Recertification credits available for this workshop. There will be 7 ODA Core Pesticide Applicator Recertification credits available for this workshop.

Agenda

9:00-9:15 AM      Registration / Check-in

9:15-10:00 AM      Powdery Mildew Biology and Management (Dr. Michelle Moyer, WSU)

In order to effectively manage a pest, we have to know their biology. This talk will cover key environmental factors that influence how the powdery mildew fungus develops, as well as cover basic mildew management principles, including when to do cultural and chemical intervention, and why timing is so important for disease control.

10:00-10:45 AM    Botrytis Bunch Rot Biology and Management (Dr. Charlotte Oliver, WSU)

In order to effectively manage a pest, we have to know their biology. This talk will cover key environmental factors that influence how the powdery mildew fungus develops, as well as cover basic mildew management principles, including when to do cultural and chemical intervention, and why timing is so important for disease control.

10:45-11:00 AM     Break

11:00-12:00 PM    Confronting the Challenges of Fungicide Stewardship (Dr. Monica Cooper, UCANR)*

Integrated pest management incorporates prevention, avoidance, monitoring, and selective suppression tactics to reduce pest damage. Fungicides are the primary tool in grapevine powdery mildew management, but cultural methods, fungicide use patterns (rate, timing and spray coverage) and pest monitoring are important aspects of fungicide stewardship. This talk will cover the basics of fungicide stewardship practices and how they can be implemented and adopted to ensure the efficacy of a disease management program.

12:00-2:00 PM   Build a Base Powdery Mildew Management Spray Program …. (Dr. Michelle Moyer, WSU)

This hands-on activity will divide workshop participants into teams. Each team will be tasked with designing a powdery mildew fungicide program. First, teams will be asked to read a series of fungicide labels (provided to them) and develop their “fungicide inventory list”. This process will teach participants how to read a label, and information is important to record when designing a management program. Teams will then design a generic fungicide program for powdery mildew based on historical average dates or key developmental stages for wine grapes in eastern Washington.

12:30-1:00 PM     Working lunch

2:00-2:45 PM    … Adjust that Program for High and Low Pressure Years (Dr. Michelle Moyer, WSU)

After building their base program, teams will then be asked to adjust their programs based on high-pressure (high disease), and low-pressure (low disease) environmental scenarios.  This process will help emphasize biological information and fungicide stewardship practices presented in the first part of the morning.

2:45-3:00 PM     Break

3:00-4:00 PM    … Then Defend Your Programs (Dr. Michelle Moyer, WSU)

Teams will then present their base program, and their adjusted programs, highlighting why they made the management decisions they did, and how high and low-pressure scenarios altered their base program decisions. This part of the activity is designed to promote critical thinking associated with decision making.

4:00 – 4:30 PM    Conclusions and Surveys

Contact Information

For more information on the workshop please contact: FRAME team – Dr. Michelle Moyer (michelle.moyer@wsu.edu), or Dr. Charlotte Oliver (charlotte.oliver@wsu.edu)

Other co-moderators for this event include Dr. Monica Cooper, Dr. Timothy Miles, and Dr. Walt Mahaffee

Financial Support

Additional costs of this workshop are offset with financial support by: USDA-NIFA-SCRI Award No. 2018-03375 titled “FRAME: Fungicide Resistance Assessment, Mitigation and Extension Network for Wine, Table, and Raisin Grapes”

Anyone attending this program who requires auxiliary aids or services, please contact Michelle Moyer at 509-786-9234 or michelle.moyer@wsu.edu . Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office.