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Tree Fruit News – Fruit Matters, March 2023



Decision Support Tools for Frost Mitigation

This article summarizes some of the available and emerging decision-support tools that can be used in tandem to mitigate frost effectively.
graphs of conventional management and IPM programs

Pre-bloom pear psylla management program, 2023

Good timing and selection of sprays will kill pear psylla and other pests, reduce unnecessary spray costs, and set up your summer management for success.

2023 is looking like one of the worst years for honey bees in nearly two decades

Honey bees are the primary pollinator for many fruit and seed crops in the State of Washington. Since 2005 much has been written about the challenges honey bees face with the so call “Colony Collapse…
graph proportion of graded fruit to apple size

Effect of multi-leader training systems and Prohexadione-Ca applications on apple cultivar ‘WA 38’

In a grafted WA38 trial Prohexadione-Calcium significantly reduced excessive tree vigor and resulted in larger and more uniform fruit size compared to the control. 

Codling Moth Mating Disruption Considerations

Codling moth mating disruption is the foundation for integrated pest management in apple and pears. It is important to remember that the mode of action is false trail following or competitive attraction. Therefore, it is…
anatomy of flower

Get Ready for Thinning Season

Spring is here and it is time to get ready for thinning season. While all aspects of orchard management are important, there may be no decision made by growers more critical to their economic bottom…


Biopesticides for Fire Blight Management

Join Ken Johnson, Professor at Oregon State University Collage of Agricultural Sciences, to talk about the effective use of biopesticides for Fire Blight control.

WSU Decision Aid System Tools Training

Join us for a workshop on the codling moth models from the WSU Decision Aid System (DAS).


PACMAN Briefings – Session IV

Mar 9 | Zoom Webinar

WSU Decision Aid System Tools Training

Mar 14 | Zoom Webinar

Biopesticides for Fire Blight Management

Mar 15 | Zoom Webinar

Fire Blight Webinar Series: Fire Blight Pruning and Sanitation

Jun 13 | Virtual


Karen Lewis
Tianna DuPont
Gwen Hoheisel
Marcella Magby
Manoella Mendoza
Claire Murphy
Jodi Rinaldi
Bernardita Sallato
Tory Schmidt
Ricardo Lima Pinto


logo from PACMAN sessions

PACMAN Briefings: Session 1, Episode 4

Todd Einhorn – Fruit Growth Model (new method)

Fruit Matters March 2023 editor Tianna DuPont, coordinator Jodi Harms. For April edition submit to Bernardita Sallato and Jodi Harms.

Washington State University