We've been treating EAB since 2006/2007. If I pick up a new EAB client it is because they recently moved into the house and realized they had an ash tree (or had me out to look at trees for pruning, and I point it out for them). The Quik-Jet Air with Tree-age R10 is the best trunk injection method I've found. We also do soil drench with imidacloprid. I use the 2F formulation...0.2oz/inch of trunk diameter for smaller trees or 0.4 oz/inch for trees over 15" dbh. Both highest labeled rate. Equipment here usually use
this soil injector. Mix up a tank such that we use either 1/4 or 1/2 liter per inch of trunk diameter to get the proper dosing. I also have an old Kioritz soil injector that is no longer made...something like
this back pack with soil injector or maybe
an EZject would work well?
Bagworms are pretty consistent. Not at the same place every year, but they pop up somewhere and we get a handful every year. I use Conserve SC most of the time, but later in the season we switch to Talstar.
The 2 ongoing sprays we have are for:
Apple scab (first treatment with Reliant, then two treatments with Myclobutanil + Captan).
Rhizosphaera needlecast (Usually also start with Reliant, then second treatment with Tourney - we also mix in foliar fertilizer that has humic and folvic acid. The folvic acid is supposed to block the ability of the fungus to develop on the needles. Spruce spider mites are so common as well, we'll usually put a miticide (Hexygon or abamectin) in the tank for the first spray of the year to knock them back.
Magnolia scale is probably the next biggest hitter. Imidacloprid right after flowering, then usually need to follow-up in the fall with topical spray of the crawlers with horticultural oil.
Oystershell scale (and probably some Japanese maple scale - they can be tough to tell apart) usually takes 2-3 treatments including Safari bark spray for a systemic and a horticultural oil targeting the crawlers.
We do a few elm for DED.
Helped a city park with a Gypsy moth problem (used Mauget's Abacide 2 - trees too big to spray from the ground. They couldn't get the company doing aerial sprays for the State to do their park which would have been ideal).
Have a handful of other products in the cabinet as well...but those are the ones used the most. Curious to hear what others have to share.
