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I live in KC and we are just in the beginning of our EAB journey. Like many metros, our urban tree canopy is overloaded with ash. Some suburbs have documented 1/4 of all street trees are ash.
I have been searching for good data that really shows how well the treatments are going in heavily infested areas. It seems most studies I have found were funded by an "interested party" in selling or applying the chemicals to treat EAB. So I am going into the trenches to ask you: the seasoned arborist with several years fighting (or getting run over by) EAB.
My question: Are there studies showing multiple year success of treatment when EAB came in and destroyed all untreated trees? Is success “fair”, “good” or “excellent”? Have you done your own study? Will these treated ash be weakened over time from all the small damage created by so many young larvae that do a tiny bit of damage before they die during the massive swarm when the EAB population swells? Can I expect a treated tree to flourish when the EAB outbreak is full-on? Will the lone treated ash in a sea of untreated ash pull thru with flying colors?