Written by Liesl Oeller, Washington State University, April 1, 2024
The field season is well under way and the DAS team is excited to roll into April. Now is the perfect time to subscribe to DAS!
We are having a considerably warmer spring than last year. As of April 1, 2024, we have significantly surpassed degree days accumulated at this time in 2023, when we had a record cold spring.
As we move into April, models are becoming active and tree fruit pests are emerging. The pear psylla model is one to look at. Populations in central and southern Washington are increasing, with nearly all overwintering adults emerged and first-generation eggs beginning to hatch.
Codling moth (CM) activity is also expected to begin in central and southern Washington. CM emergence is predicted at 175 degree days, which places like Pasco and Vantage will reach next week.
You can use our time machine tool to look back on weather data from the last five years and see how 2024 compares. You can also set up alerts for when key pests are emerging for timely management.
For weekly updates on DAS models and tools, subscribe to our mailing list. Now is the perfect time to subscribe to weather stations on DAS, get started today!
Contact
Liesl Oeller
Washington State University
elisabeth.oeller@wsu.edu
(509) 335-5815
Fruit Matters articles may only be republished with prior author permission © Washington State University. Reprint articles with permission must include: Originally published by Washington State Tree Fruit Extension Fruit Matters at treefruit.wsu.edu and a link to the original article.
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