Poorly Oaks

[Glen Poole]

I really appreciate yours & everyones knowledge & help. Big thanks to you all

[JonnyVine]

Glen

A superficial look at those photos suggests this could be Phytophthora Ramorum.

P. ramourum is another of the imported pathogens our American friends have given us affecting huge numbers of Quercus species over there.

I have recently attended a site with the disease and the symptoms look very similar

 

The spores are disseminated in water

 

My advice would be to send a sample to be analised to

 

Francois Bocheraeau

Forest Research

Alice Holt Lodge

Farnham

Surrey

GU10 4LH

 

This will rule out any hasty diagnoses made by headless chickens that then flap from one conclusion to another

[Tony Croft aka hamadryad]

Glen

A superficial look at those photos suggests this could be Phytophthora Ramorum.

P. ramourum is another of the imported pathogens our American friends have given us affecting huge numbers of Quercus species over there.

I have recently attended a site with the disease and the symptoms look very similar

 

The spores are disseminated in water

 

My advice would be to send a sample to be analised to

 

Francois Bocheraeau

Forest Research

Alice Holt Lodge

Farnham

Surrey

GU10 4LH

 

This will rule out any hasty diagnoses made by headless chickens that then flap from one conclusion to another

 

thinking of anyone in particular Jonny?

 

This is the sort of subtle dig that just proves exactly what i say about forums.

 

get your sample of glen, I will refund you the fee if im wrong

[Glen Poole]

Ah man! please don't ruin this with rudeness, We all know the only way to get 100% diagnosis is to send a sample off, Tony has said for me to do this twice & i will be doing this when i've been back to the site & met the client. I infact love different opinions, might be this, could be that, sharing experiences & knowledge. It makes great conversation, rudeness doesn't, thanks.

[kev7937]

Ah man! please don't ruin this with rudeness, We all know the only way to get 100% diagnosis is to send a sample off, Tony has said for me to do this twice & i will be doing this when i've been back to the site & met the client. I infact love different opinions, might be this, could be that, sharing experiences & knowledge. It makes great conversation, rudeness doesn't, thanks.

 

 

 

Nicely put.

[Le Sanglier]

I like a bit of dispute, otherwise it's all a bit anodyne, it's what keeps you coming back to certain threads.

Look forward to the results!

[Glen Poole]

Just to up date, Forest research at Alice Holt have now been notified & i'm waiting for their response.

[Le Sanglier]

Bump! any news Glen? (over a month now!)

[Paul Cleaver]

looking at the amount of trees affected - if its honey fungus the ground will be loaded with rhizomorphs and some with mycelium around the base of the trees - It should be easy to find - if none is present then im for phytophthora

[daltontrees]

I'm afraid I have no diagnosis to add, but I await the outcome with bated breath...

It occurs to me, though, that if it is only affecting the oak which are fairly spread out and is skipping other species, it must have come on site in the planting soil/rootball/containers, no? If so and if it is, it might not be sending out identifiable rhizomorphs yet. If it is and is confirmed as Armillaria, maybe the oaks will have to be taken out, roots and all, asap to avoid spreading the infection. Tisk, I am speculating prematurely.