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Pest



NOW

The Battle Against NOW and Coddling Moth

By Julie R. Johnson, Contributing Writer

How to the fight the battle against Navel orangewood (NOW) and coddling moth in walnuts was the take home message of Emily Symmes, UCCE Area IPM Advisor, Sacramento Valley, in her presentation at the West Coast Nut hosted Annual Walnut Trade Show at the Yuba-Sutter Fairgrounds on Jan. 6, 2017. “Coddling moth hit pretty hard this last harvest, as did Navel orangeworm,” she said. “A lot of people were caught a little off guard by both.” Of particular concern was damage seen in the later maturing varieties, which have historically been considered less vulnerable to worm damage. “Earlier-than-typical, and spread out husk split and maturation led to many later varieties experiencing higher damage in 2016. The high NOW damage at harvest may have been the result of large overwintering populations, the mild, dry winters over the past few years and earlier springs,” Symmes added. The earlier springs and high temperatures...

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