Pacific Flatheaded Borer becoming an issue in walnut orchards

Here is the article that I wrote for UCCE San Joaquin Field Notes Newsletter (Nov. 2018 Issue, pg. 3-4) about the recent infestations of Pacific flatheaded borer in walnut orchards especially in the east side of San Joaquin and Stanislaus Counties.


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Online course on air blast sprayer calibration

We’re excited to announce that a brand-new online course on air blast spray calibration is now available. This course was developed by Lynn Wunderlich, University of California Cooperative Extension (

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