Re: OT - Dutch Elm Disease - There is a Tractor Here

Posted by Billy NY on August 28, 2012 at 21:16:49 from (67.248.100.3):

In Reply to: OT - Dutch Elm Disease - There is a Tractor Here posted by Brian G. NY on August 28, 2012 at 12:10:13:

Ulmus Americana, has to have one of the best looking canopies around, I've always admired the elm trees, especially the old mature ones with that beautiful shape the canopy takes.

If you want to learn more, look up the elm research institute,(link attached) they have created a strain that is not effected, resistant or immune to DED (Dutch Elm Disease)

These trees make up a lot of the forest around here, and I've patiently waited for the hillside on back of my place, that was once pasture, just a steep section to become forest, and now its a young stand of black cherry, apple and elm, but I am losing most if not all the elms this year, I have 5-6 to cut and split due to DED. This hillside now provides shade, privacy and the deer love to use it as a path, they feed on the apples, use it for cover, I can literally hunt from my yard, and there's 98 acres here. I'm glad its not all elm or it would be a loss, and its taken 30 or so years to grow in, DED sucks to say the least.

I've always noticed the taller ones with say 4 main trunks above the butt, some have a whole bunch of smaller trunks, limbs, get them at the right stage, no splitting needed, I have one big ole "bushed" out one near a field, others grow tall, always wondered about that. Near a big one that died, is another that is starting to look exactly like the one that the seed likely came from, genetics ? Elm does reproduce and grow quickly, even DED won't eradicate elm just ruin your favorite ones and many 15-20 years old it seems.

I had a favorite near one of the old barns, its partially in a picture in the 40's at this place, young then, by the 90's it was 150 feet tall and beautiful, then DED showed up. I did inject it with fungicide, it took like 50 gallons of liquid this tree, but the treatment was too late, once they flag, yellow leaves/branch on top, its a 50/50 chance if you inject it. You're supposed to inject these in the spring, when the sap starts to run up, it is supposed to prevent DED.

I thought I recalled that any trees that do have the fungus, from the beetle, need to be debarked and burned, maybe Jim is right below, have to read up on that web site.

The injection set up is a fiberglass pressure tank, with a gauge, schrader valve and outlet to push the fungicide into a harness that you drill holes in the foot of the tree and insert, air pressure pushes the liquid into the tree, I could not believe how many gallons this big one I tried to save took.

• Elm Research Institute

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