What are these spots?

Kevin · July 26, 2006, 09:06:16 PM

...and what causes them?

Thanks!

Paul_H · July 26, 2006, 09:09:57 PM

There are no spots Kevin.Do you see spots?
How long have you been seeing these"spots"

Sprucegum · July 26, 2006, 09:12:38 PM

I suspect Paul has a very small paintball gun

Riles · July 26, 2006, 09:15:32 PM

There's a fungus amongus.

Kevin · July 26, 2006, 09:27:40 PM

This is going to be painful. :-\

;D

jon12345 · July 26, 2006, 09:49:06 PM

acid rain, chewin tobacco spit hmmm ???

bitternut · July 26, 2006, 10:28:22 PM

Tar spot

Kevin · July 26, 2006, 10:34:18 PM

...and what might that be?

Texas Ranger · July 26, 2006, 10:39:30 PM

Sycamore anthracnose.

Tom · July 26, 2006, 11:08:11 PM

All I see is two girls in bikinis, mud wrestling in Alabama on a Saturday night with two of Br'er Noble's stupid cows watching through the window.

treecyclers · July 26, 2006, 11:24:05 PM

Quote from: Tom on July 26, 2006, 11:08:11 PM
All I see is two girls in bikinis, mud wrestling in Alabama on a Saturday night with two of Br'er Noble's stupid cows watching through the window.

Mr. Tom,
What exactly are you doing watching my girlfriend at the mud wrestling contest at Bubba's Bar & Barbecue with Br'er Noble's cows?

Tom · July 26, 2006, 11:47:34 PM

I was Alybamy bound, arizizony man. :D

Kevin,
a rule of thumb on leaf spot or leaf diseases is that the round spots with the mass in the center is usually a fungal infection. It is promoted by droplets of water on the leaf.

Bacterial infections will grow down the veins of the leaf into areas between. It will cross borders and the shape of the brown spot will be irregular and found on both sides of a vein or may even incompass the entire leaf.

Viral infections are internal and the entire leaf will turn brown, along with buds and stem.

Way back years ago, I think it was Jeff that found a leaf in his yard with leaf spot. We had a good discussion about it then, but I can't find it.

Kevin · July 27, 2006, 07:23:15 AM

Very good, thanks.

bitternut · July 27, 2006, 08:26:18 AM

I think I posted a picture of leaves from my neighbors tree but I could not find the post or picture anywhere. It was a while back. It was a very wet year and it has had spots only a couple times since then. Last year was pretty dry and there were no spots at all. Tree is still growing fine and appears to suffer no ill effects from this disease.

SwampDonkey · July 27, 2006, 05:43:08 PM

Very good answer Tom. We study disease (pathology) in school, but 99 % of us never get to use the knowledge and it disapates into oblivion. It takes a back seat with industry also, who try to figure out the cheapest way to get wood to the mill and find enough time to fill out paperwork. :

I won't start a new thread, but I have been noticing something attacking hop hornbeam (ironwood to my dendro prof). I've been too busy to stop and 'observe' what is actually going on with them. What ever it is, it's not in my yard trees. Hope it stays away or it's not serious. Those lime green seed sacs are really showy this time of year. Who the heck would buy an ornamental tree or yard tree when the woodlot is full of free stuff. :

I bet if ya don't have a woodlot and ya ask the neighbor nice or help split some firewood he'd let ya get a tree or two if ya promise not the tell everyone where ya got it from. ;D