Effects of systemic insecticides against emerald ash borer on ash seed resources

Emerald ash borer (EAB), Agrilus planipennsis, is an invasive insect that was accidentally introduced to North America from Asia. It continues spread rapidly across and responsible for the death of tens millions trees (Fraxinus spp.). All American species are susceptible EAB infestation threatening resource diversity. Measures such as systemic insecticide treatments in urban forests collection seeds provide a means conserving genetic resources. Understanding effect these insecticides could have on seed viability therefore important informing conservation efforts. Another potential concern effective weevil (Lignyodes spp.) whose larvae develop feed seeds. However, levels has not been investigated date. Our study two treatments, azadirachtin emamectin benzoate, infestation, germination ability, time collected boulevard green (F. pennsylvanica Marsh.) cities Minnesota 2017 2019. Weevil were similar between untreated treated 2018. In 2019, prevalence average 17% 30% higher than benzoate-treated respectively. data suggests repeated at labelled rates can reduce weevils target germplasm. Additionally, did affect treatments. These results suggest may be addition known benefits canopy preservation.