This spring, like many early season psylla controls were difficult to apply. Early season management limitations have many wondering if post-harvest is a logical time to target overwintering adults. However, currently effective post-harvest management requires area wide coordination, effective products and adequate coverage. Dr. Louis Nottingham, WSU Entomology, TFREC summarizes pear psylla postharvest sprays here: https://treefruit.wsu.edu/crop-protection/insect-mite-pests/postharvest-sprays/
