What is this

[Ax-man]

We took this from a limb that was hanging over a garage roof. about 2 - 3 wks ago.

Is this a gall or some other type of parisitic growth?? Looks like a big tree cyst.

When I went to look at the job it bleeding sap out of it.

Larry

 

[Treeman14]

Looks like something one of Rocky's kin would do.

 

[Ax-man]

My mistake

Sorry about the picture it is a little big and slow to download, Ill see if I can try and resize it. It wasn't that big when I doing the proof before putting it up.

Larry

 

[Ax-man]

Did someone help me out or did it correct itself some how. If someone redid it . thanks

Larry

 

[rahtreelimbs]

Let's see how this works!!!

 

[Treeman14]

Originally posted by RockyJSquirrel
A simple physical wound from squirrels chewing would seal over in a few years.

Not if they keep chewing on the same limbs year after year. I've seen this type of damage on live oaks, and I've seen the skwerls in action.

 

[rborist1]

:Eye:

 

[Stumper]

I think he looks more appropriate standing on his noggin.

 

[glens]

Re: My mistake

Originally posted by Ax-man
Ill see if I can try and resize it. It wasn't that big when I doing the proof before putting it up.

Seems I was just "talking" about that the other day...

Hey Rich, way to go!  The image was 0.7MB and you shrunk it all the way down to 1.6MB!

Chew on the following data:<blockquote><font face="fixed">Image: 14941.jpg
&nbsp; Format: JPEG (Joint Photographic Experts Group JFIF format)
&nbsp; Geometry: 2180x1635
&nbsp; Filesize: 659.4k
&nbsp; Compression: JPEG
Image: 14946.bmp
&nbsp; Format: BMP (Microsoft Windows bitmap image)
&nbsp; Geometry: 872x654
&nbsp; Filesize: 1.6m
&nbsp; Compression:
Image: 14941.jpeg
&nbsp; Format: JPEG (Joint Photographic Experts Group JFIF format)
&nbsp; Geometry: 872x654
&nbsp; Filesize: 151.2k
&nbsp; Compression: JPEG</font></blockquote>The resultant file size was "128.5k" when simply reducing the image to 40% dimensionally, but I also sharpened it up a touch, which cost about "23k" more.

Glen

 

[Ax-man]

Trying it again

I couldn't get Rich's to down load. Good job Glens that is about what I had or thought I had.

Here we go again, my turn.

Larry

 

[Ax-man]

Much better, at least at this end.

Comcast is coming tommorow to hook us up to this new high speed internet, I'm looking forward to it. I've had it with our present server, connections are always failing, if we have a storm blow through it takes them two days sometimes to get it back up to speed.

Larry

 

[rbtree]

Try this, cropped, exposure compensated, sharpened, and resized

 

[Nathan Wreyford]

Originally posted by RockyJSquirrel
It's like the tree cannot compartmentalize over that old wound.

There is something chemical going on inside the galls which interferes with and blocks the CODIT. I keep going back to the cynipid wasp eggs.

My understanding is that it is chemical and some even think viral, that causes PCR (polymerase chain rxn) where a tiny piece of the tree's DNA is used to replicate the entire strand. Thus the tree produces this mass.

.02

 

[Derek]

you guys and your photo skills are unreal.Derek.

 

[JeffE]

Does anyone think that Nectria target canker might be involved in Ax-man's sample? I know the gall formation is remarkable, but that central canker screams Nectria to me... maybe a combination there?

 

[Ax-man]

I forgot to mention this it came off of a Siberian Elm, one of those hybrid varieties. The tree also has two more of these growths or cankers developing, one is on a smaller limb, the other one if I remember right is on the main stem. All three are in close proximity to each other.

Larry

 

[Ax-man]

Everyone who has commented could be right or partially right.

JeffE may have hit on something that is new information for me, Elm is listed as a host for Nectria in Sinclar, Lyon and Johnson, Diseases of Trees and Shrubs.

I always thought Nectria was pretty much host specific to Honey Loucust, till I came across a Little Leaf Linden , a few years ago, that would have a large limb just go dead for no real reason, the best I could come up was Nectria cinnibarina.


Larry

 

[Guy Meilleur]

I think you're "on target" with Nectria.

How big is the infection on the main stem? they can be cut out if you catch them early enough.