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Brown, aborted nuts linked to Pseudomonas infection
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
Rusty Tussock Moth in Hazelnuts
We have noted the presence of rusty tussock moth (Orgyia antiqua) feeding in our hazelnut plots for the last two seasons. This insect seems not to be a pest, only an incidental feeder that causes minor defoliation. The larvae are … Continue reading