Foliar, trunk and systemic treatments are enabling Pennsylvania in its efforts to eradicate spotted lanternfly
Eradication of the spotted lanternfly is still possible,” says Dana Rhodes, State Plant Regulatory Official with Pennsylvania.
The spotted lanternfly, Lycorma delicatula, was first confirmed in Pennsylvania in 2014. It has now been detected in Virginia, New Jersey and Delaware and once again, human assisted movement seems to be the problem. It feeds on over 20 plant families but its favourites are the tree of heaven and willows.
Spotted lanternfly is native to China, India and Vietnam. Four years after it arrived in Korea, it was widespread, decimating the grape and fruit industries.
“I am happy to report, the areas treated are showing a significant decline,” Rhodes said of the progress being made in Pennsylvania, USA. “We are depending on the community. We have a lot of people really gung-ho. We are unified. We are energized. Emerald ash borer (EAB) was here for 10 to 15 years before it was found. Spotted lanternfly was here for maybe 2 to 4 years. Korea did not quarantine. The area we have quarantined is still relatively small.”
It is still early days in the research regarding spotted lanternfly in North America but already there are significant developments. Many products are effective against this invasive. These include foliar, trunk and systemic treatments. “It is easy to kill,” continued Rhodes. “Use a fly swatter, crush them under foot. Destroy the egg masses in late summer, early fall. Every one dead is one less to reproduce. We must get the numbers down.”
Praying mantis, the assassin bug and insects of opportunity do feed on spotted lanternfly but these are insignificant in the control of this invasive. USDA is researching bio-control, “but this will take years. The research is being done right. We do not want a solution that kills something native.” A specific pesticide is under study and a product that might interrupt the insect’s reproduction is being developed and there is a new lure. “To be testing this many potential options, this soon is a really good thing.”
The biggest assistance Rhodes asks for, “If you are visiting the quarantine area. Roll up your windows. Don’t park under a tree line. Check all your belongings and vehicle before you move. Don’t transport spotted lanternfly. Look before you leave.”
Best practice guidelines are now posted on the Pennsylvania spotted lanternfly web site written by the different industries affected including: hardwood and fruit trees. A grape growing best practice guideline is almost ready for release. And eradication of the tree of heaven, ailanthus altissima, the primary host is ongoing in the quarantine area.
— Pat Kerr