By Blake Jackson
The Pennsylvania Department of Agriculture has issued a quarantine order to control Phorid Flies, a destructive pest impacting mushroom farms in Southeast Pennsylvania.
These flies, while posing no human health threat, damage crops and are a nuisance to nearby residents.
The order mandates that mushroom growers in Kennett and New Garden Townships in Chester County steam-treat their growing houses and used growing medium between crops. This proven method effectively kills the flies and prevents their spread.
"We have been working closely with the mushroom industry and Penn State researchers for many years, seeking safe and effective solutions to this persistent pest plaguing one of Pennsylvania’s most valuable crops," Secretary Redding said.
“Steam treatment has proven to be safe and effective, but the method only works if 100% of growers use it. The Shapiro Administration is committed to working toward safely managing these pests for the good of all mushroom growers, and for the neighbors who share frustration with the pests. With this step, we are offering both a proven control method, and financial assistance to farmers to help implement the practice."
Pennsylvania leads the nation in mushroom production, with Chester County being a major hub. Phorid Flies thrive in the dark, humid environment of mushroom farms, reducing yields by up to 40%.
"AMI members continue to test and develop strategies to combat Phorids and they stand ready to adopt new tools and practices based on the research conducted with the industry," said Rachel Roberts, President of the American Mushroom Institute. "We welcome this significant investment from the Department of Agriculture to assist farmers and the community."
The quarantine order, effective January 30, 2025, requires detailed treatment records and allows for farm inspections. The department will provide educational sessions for growers.
The Chester County Conservation District offers $500,000 in grant funding to assist farmers with the required treatments.
The Pennsylvania Department of Agriculture has invested heavily in research to develop safe and effective pest control methods that minimize environmental impact.
Photo Credit: istock-guruxoox
Categories: Pennsylvania, Government & Policy