Penn State researchers conducted a controlled study over four years at a farm in Berks County.
This September 2019 file photo shows a spotted lanternfly at a vineyard in Kutztown, Pa. A new Penn State study suggests that the insects impact on hardwood trees might not be as bad as initially feared. Tree lovers might not have to worry as much about spotted lanternflies harming certain hardwoods as was first feared, according to a four-year study by Penn State researchers.
Last month, experts told PennLive that one observation is that spotted lanternflies seem to move on from feeding areasThis map from the Pa. Department of Agriculture shows the counties under spotted lanternfly quarantine. By the third year, researchers used fewer insects and all the hardwoods recovered except for the tree of heaven.
As for Pennsylvanians who have been squashing lanternflies and trying home remedies to save their trees, Hoover said she’d suggest they avoid spraying any insecticides.Where are the spotted lanternflies? Just wait, expert says Hoover added that the lanternflies still present a threat to vineyards. There are significant grape-growing and wine interests in northwestern Pennsylvania working to keep the spotted lanternfly spread from reaching there.
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