Mission Statement

The WSU-Tree Fruit Decision Aid System (DAS) is the premier source of time-sensitive information for management in Washington State tree fruits. We are open and eager to collaborate with scientists to integrate tools, management information, and models into DAS that will assist Washington tree fruit growers make the best management decisions and remain competitive in the world economy.

Strategic Vision

The development of DAS is guided by four goals and principles:

1. Implement science-based tools that help with management of time-sensitive problems in entomology, plant pathology, horticulture, soil science and other allied sciences.
2. Use technology to simplify and expand our ability to provide information in a broad range of areas to decision-makers in the tree fruit industry.
3. Work with scientists to implement web and smartphone-based solutions to key technical problems faced by the tree fruit industry.
4. Collaborate with other WSU-DSS and researchers in the region to implement science-based tools for the transfer of time-sensitive information to decision-makers. This includes sharing tools already developed by WSU-Tree Fruit DAS or implementing tools developed by other groups.

How It Works

Who is it for?

• for pest management decision makers in the tree fruit industry

What does it provide?

• time-sensitive information on pest development, management options, and pesticide recommendations
• accessibility on common smartphones and tablets (iOS and Android)

How does it work?

1. sign up for an account (free access; Who Supports BC DAS)
2. choose weather stations near your orchard location
3. choose pest and horticultural models
   • Insect models: codling moth, honeybee foraging, Mullein (Campylomma) bug, oblique-banded leafroller, peach twig borer, San Jose scale, Western cherry fruit fly
   • Diseases: apple scab, fire blight
   • Horticultural models: blooming (Ambrosia, Cripps Pink, Gala, Red Delicious), fruit growth (Cripps Pink, Gala, Red Delicious), bloom timing (Fuji, Golden Delicious, Granny Smith, Jonagold)
   • Disorders: storage scald, sunburn browning of apple
4. view model output
   • current and forecasted status of pests or issue
   • management recommendations depending on the pest status
5. access management information from the BC Tree Fruit Production Guide

DAS for British Columbia

Climate change is affecting the timing of pests and disease emergence during the growing season, and the tree fruit industry in the Okanagan valley in British Columbia, Canada wanted a tool that provides time-sensitive decision management support. The successful Washington

State Decision Aid System (DAS) was adapted to the Okanagan region of British Columbia, Canada in 2018. Known as BC DAS, this exciting expansion into a new region was made possible through the cooperation of the Canadian fruit growing industry in the Okanagan valley and local project partners including the Okanagan-Kootenay Sterile Insect Release Program (SIR), BC Tree Fruits, BC Fruit Grower’s Association, Agriculture and Agri-Food Canada’s Summerland Research and Development Centre and the BC Ministry of Agriculture. The Sterile Insect Release Program (SIR) is covering ongoing annual costs relating to BC DAS, and the tool is now available free of charge to Okanagan tree fruit growers. WSU is excited to be partnering with the Canadian tree fruit industry.

Initial project funding to support the development, testing and launch of BC DAS has been provided in part by the Sterile Insect Release Program (SIR) and in part by the Governments of Canada and British Columbia through the Investment Agriculture Foundation of BC under Growing Forward 2, a federal-provincial-territorial initiative. The project was identified as a priority agricultural adaptation project in the Okanagan Adaptation Strategies (2016) and by the Okanagan Adaptation Working Group through a program delivered by the BC Agriculture & Food Climate Action Initiative.

A Tool Used By The Industry

We performed user surveys in 2008, 2010, and 2013 to estimate usage and areas where we needed to improve the system. The results showed that DAS is used by the majority of IPM decision makers in the industry in Washington State.

• Roughly 400 managers or management consultants use DAS on a regular basis on >90% of the acreage throughout the season.
• In all three surveys users estimated that the value for DAS to the industry was roughly $16.5M/yr.
• Users felt that DAS clarified treatment timing, improved their overall management program, helped them choose pesticides for best efficacy and least effects on natural enemies, and was a good source of general IPM information.
• Users also reported better pest control and lower management costs.
• DAS users indicated that 81% of them shared information on DAS with others, suggesting that its impact is broader than what can be estimated by just counting those who regularly access the web site.

Testimonies By DAS Users

• "Invaluable tool which I and other consultants use daily."
• "You have done wonders. It's by far the best DSS [Decision Support System] anywhere."
• "DAS will be great for new people coming into agriculture. It has been a help to those of us near going out. Our company has an internship program for young people entering agriculture. I encourage them to use this program. When you advise to farm, you need the weather every day. Thank you!"
• "It's a great system, keep up the good work, thanks!"
• "Thanks for the great tool."