Hemlock woolly adelgid treatments
With the longest local treatment record, we have now refined our management prescriptions based on actual field experience and monitoring. Cultural methods have not proved effective nor has biological control. Thus, we are left with insecticide intervention until a natural balance is achieved.
- Soil injection: soil application of systemic insecticides
- Foliar spray: foliar spray of contact and systemic insecticides
- Stem injection: direct trunk injection of systemic insecticides