This is a picture of one of four Princeton Elms that I planted. The Princeton Elm is said to be highly resistant to Dutch Elm disease.
Can anyone tell me if this id Dutch Elm disease? 

Views: 56

Comment by Lewis E. Ward on August 25, 2016 at 12:09pm

 I've never seen DED on young trees and Princeton is resistant. Since it's a young tree it's most likely drought stress.

 A sure sign of DED is a brown  cambium when you cut a twig.

http://www.na.fs.fed.us/spfo/pubs/howtos/ht_ded/ht_ded.htm#symptoms

Comment by Lewis E. Ward on August 25, 2016 at 12:15pm

Princeton does get Elm Yellows, but the brownng doesn't match the symptoms.

Here is a fine article on disease reistant elms. Personally  would never plant an elm not resistant to elm yellows or DED. There are some fine hybrid cultivars that grow fast and look much like the American elm. 

http://www.mortonarb.org/trees-plants/tree-plant-descriptions/elm-c...

Comment by Lewis E. Ward on August 25, 2016 at 12:27pm
Comment by Stephen Kutney on August 25, 2016 at 9:33pm

Lew,

Thanks for you comments and research. Those elms must have been under stress of some sort. They were newly planted and were being watered during the drought period this summer. Today both trees are doing very well.

Comment by Lewis E. Ward on August 25, 2016 at 9:51pm

Glad I could help. 

I saw that no one had answered.

The drought, heat and  windy conditions put many plansts under stress. 

Comment

You need to be a member of CornellForestConnect to add comments!

Join CornellForestConnect

Forum

How long do brush cutter blades work?

Started by Joanne Vaughn in Woodlot Management on Monday. 0 Replies

I dunno maybe it's because time flies when it's multiflora rose and buckthorns that are getting whacked. It seems that these blades are needing retirement after 8 or so hours.   Is this typical for this type of material. WIde range of material but…Continue

Tags: cutter, brush

Nitrogen fixing bacteria for Alder trees

Started by Joanne Vaughn in Woodlot Management. Last reply by Joanne Vaughn on Friday. 7 Replies

I am thinking of starting some alder trees from seed for planting into an area that does not and has not hosted alders.  How can I gain the nitrogen fixing bacteria for inoculation of the roots ?  Continue

Seeking advice on controlling oriental bittersweet

Started by Kristen Whitbeck in Woodlot Management. Last reply by Lew Ward Apr 15. 2 Replies

A student in my silviculture class is seeking relayed the scenario below. If anyone has any tips or tricks I will gladly pass them along. Thanks in advance!"Oriental bittersweet is choking out my mature white pine trees and my mature apple trees.…Continue

Tags: bittersweet, Oriental

Are Gall's a reason to cull Hickory trees?

Started by Thomas Wilson in Forest Health. Last reply by Ron Goodger Apr 7. 8 Replies

I'll take a photo, but in the meantime....I have a lot of bitternut hickory and some shagbark as well.  I haven't yet noticed any on the shagbark, but about half of the bitternut have gall's.  They get up to about 3 inches in diameter.  Some tree's…Continue

Removal of grass around seedlings in pasture

Started by Joanne Vaughn in Woodlot Management. Last reply by Peter Smallidge Mar 19. 11 Replies

Even after the timely discussion of "green lie" this week, I am still unsure of the best method to eliminate grassy vegetation around the pine, cedar and oak seedlings we are putting in this spring. I feel this is very important because we lost a…Continue

Saving Trees With Tree-Eating Mushrooms

Started by Lew Ward in Forest Health Feb 27. 0 Replies

Saving Trees With Tree-Eating MushroomsControl of Amellaria Shoe-string Rot Fungushttps://youtu.be/FPeBYnGwo4YContinue

Electric Fencing

Started by Carl DuPoldt in Agroforestry Jan 21. 0 Replies

Electric Deer Fence WorkshopLuke Freeman hosted a workshop at the incubator farm in Fayetteville, AR to demonstrate the use of the solar-powered electric deer fence. Luke built the fence with help from Extension specialist Kenny Simon and County…Continue

Beech control with triclopyr versus glyphosate

Started by Peter Smallidge in Woodlot Management. Last reply by Joanne Vaughn Nov 20, 2019. 3 Replies

[I'm pasting from a recent email thread]Question - I'm working on a couple beech regen and mid story control projects.   I have been using Garlon 4 in oil.   Works good, but sometimes I want it to move through the roots and the Garlon doesn't do…Continue

Badge

Loading…

© 2020   Created by Peter Smallidge.   Powered by

Badges  |  Report an Issue  |  Terms of Service