ID leaf drop in various hardwoods

[xtremetrees]

The necrosis in various trees on a 2 acera property causes me much concern as SOD phytoperia may be establishing. Neighboring properties also display same symptoms as the folling pics. Thou it is not infecting the sweetgum it has affected most the oaks and a few hickory trees.I am unsure if this is SOD or virticulium wilt. Can I save any of the trees as fall approaches in my zone no leaf drop has occured but fall foilage is beginning to display. I am convinced this is not fall color but a fungus, virus, or bacteria. We are trimming up uninfected trees, deadwooding for hazard reduction and stress alievation.
Here are the first 3 pics of a mulitstem over the road and powerlines. We are decided to wait on this removal. At best we are hoping to save the left side thou I doubt it. This is not post construction and the trees are well established some approaching 250 years old.

 

[xtremetrees]

I am sorry I have posted this into the climbing threads but I wanted to get some replies before the moderators moved it to "plant health".
Here are some more pics of the dieback in surrounding trees, the popular seem to be resistent to it and displays no necrosis. Most ornamentals and hemlock shrub are devoid of it as well. I would guess that maybe 30 % of total trees large are infected and suffering. If this is not fall foiliage which I am sure its not.

 

[xtremetrees]

Ok I'll guess and say antidontose.

 

[begleytree]

I am sorry I have posted this into the climbing threads but I wanted to get some replies before the moderators moved it to "plant health".
.

HA just for that, I'm moving it to 'support and announcements'
seriously, something like this, I wouldn't move from commercial tree care for no reason.
-Ralph

 

[xtremetrees]

Hey thanks fellow climber ie moderator.lol about support and announcements.., I'm learning alot about trees from this site. A link provided in the plant health care forum really helped. Heres the link http://maple.dnr.cornell.edu/pubs/diseases/leaves.htm But as I compare the diagnosis with the pic its hard to tell. I didnt know anthracnose was a fungus that spreads from the infected leaves into the twigs, where it overwinters. It resumes growth before any tree growth occurs in the spring and kills buds and twigs." Ive pruned it outta dogwoods with some sucess.
This homeowner is faced with many a large removal if it is. I may email University of Georgia to confirm but I did wanna give you folks a shot at it.
Besided 200 treemen having a look is alot better than one pathologist behind a desk.
Climb safe.

 

[M.D. Vaden]

Maybe I missed one, but I was looking for an image of the point of origin or attachment.

 

[xtremetrees]

Whatda mean point of origin, I think the cause is drainage in the surrounding area.

 

[xtremetrees]

In the two pic labeled better I notice the leafs are starting to curl. I think its anthracnose. Any guessers?

 

[Ekka]

Here's some links may help, this one talks of

"Infected leaves develop tan to reddish brown lesions that extend along the veins of the leaf"

http://www.arborjet.com/problems-solutions/anthracnose.htm


This one focuses more on Dogwoods but describes the problem well ...

http://www.ipm.msu.edu/CAT01_land/L06-22-01.htm#4

And the grand daddy of them all.

http://www.na.fs.fed.us/Spfo/pubs/fidls/anthracnose_east/fidl-ae.htm

 

[treeseer]

"I would guess that maybe 30 % of total trees large are infected and suffering."

The only bad one I see is that dead stem. The others' symptoms look minor, and this late in the year leaves are not that important. Maybe you can focus on PHC--weed, vertilize and mulch where needed. Check trunks and flares.

I don't see any signs of the diseases you mention. Get your own copy of the Sinclair/Lyon Diseases book and match pictures and descriptions before throwing out any theories. It'll save you time and energy, and in time you can charge for diagnosis doing just this.

 

[xtremetrees]

Great post guys thanks for info. Thou the photos are inadequate, I may revist the site and post more. Ive gotten alot of views but a few post, looks like the tree dudes are tree girls.

 

[treeseer]

I may revist the site and post more. Ive gotten alot of views but a few post, looks like the tree dudes are tree girls.

Revisit the site and rethink your overreaction to blotches on leaves in late september. Focus on that dead stem and look closer at that.

Most of the views are machines.

What ya got against girls??

 

[John Paul Sanborn]

Wrong time of year for anthracnose, I'd lean towards scorch and mineral deficiency. Could be the light, but the one white oak pic looks chlorotic.

 

[xtremetrees]

Most helpful, Ive written the trees off as dead whereas they may not be. I'm glad we've decided on the large removal until spring. If the trees dont drop the leaves during winter is that a sure sign they will not push out new buds in the spring?

I cant find anything published online about scortch. aI searched berkley and cornell universities. I did a arboristsite search and found one thread on it

http://www.arboristsite.com/showthread.php?t=4767&highlight=leaf+scortch

 

[treeseer]

we've decided on the large removal until spring. ?

That trunk looks dead. Simply scratch the bark on the branches to verify. If the inner bark--cambium--is brown and dry, that part of the tree is dead.

If the trees dont drop the leaves during winter is that a sure sign they will not push out new buds in the spring?

It depends. Some oaks hold dead leaves due to a juvenile inability to form enough abscissic acid, which "cuts" off the leaves. But that trunk looks dead--look to the trunk and the roots to find out why, and get clues about how to manage the other trunk.