Category Archives: Disease

Posts related to disease issues

Low heat units indicate late start to 2023 season

Posted on April 21, 2023 by Nik Wiman

Winter is holding us tight this year in the Willamette Valley, but it may be finally losing its grip. A break in the rain and warmer temperatures in the forecast will be a relief for hazelnut growers with orchards susceptible … Continue reading →

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Brown, aborted nuts linked to Pseudomonas infection

Posted on July 19, 2022 by Nik Wiman

Hazelnut growers around the world are familiar with the bacterial pathogen Xanthomonas arboricola pv. corylina, which is the cause of bacterial blight. Historically, no other bacterial pathogens have been problematic in Oregon hazelnuts. However, this season I became concerned with … Continue reading →

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