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IPM Message for Cranberry Growers: Jun 18, 2012

June 18, 2012

Altacor is a new bee-safe insecticide for Sparganothis fruitworm, fireworm and cranberry fruitworm. Target EGGS as they are hatching and SMALL larvae, not larger larvae. Short rinse times (<6 min) are necessary for good coverage. It is expensive ($50/acre), but is longer lasting than some other compounds. 2 apps at 4.5 oz are allowed. Restricted use after July 15 by some handlers. We are evaluating whether this will be a great 1st fruitworm option at 50% out of bloom, but for early varieties only (note that for the later Howes, we still adhere to the old recommendation of the first application timed at 7-9 days after 50% out of bloom).