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Written by Tianna Dupont, WSU Extension; Ken Johnson, OSU, Revised April 6, 2020
The last few years have built up fire blight inoculum in our orchards. Consider designing a toolbox of plans you can choose from depending on the risk in each block and how spring progresses.
Think about which are your high-risk blocks: blocks with sensitive varieties, high-value varieties or a history of fire blight. Those are blocks where you may want a more intensive program. Think about what fickle mother nature may do. Have a plan for moderate temperatures and extended bloom as well as flash bloom. Below is an example of a set of plans a grower might design to choose from for different blocks and conditions.
For more information see: http://treefruit.wsu.edu/crop-protection/disease-management/fire-blight/
WSU Extension Specialist, Tree Fruit
Office: (509) 293-8758
Mobile: (509) 713-5346
Use pesticides with care. Apply them only to plants, animals, or sites listed on the labels. When mixing and applying pesticides, follow all label precautions to protect yourself and others around you. It is a violation of the law to disregard label directions. If pesticides are spilled on skin or clothing, remove clothing and wash skin thoroughly. Store pesticides in their original containers and keep them out of the reach of children, pets, and livestock.
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