Blacking on young lime

[APC]

Yo,

 

I'm fairly certain this is a young small-leaved lime, or at least some type of lime, but I'm interested in what the black patch is. It's present on the south face and seems to have spread in the last year. Can anyone suggest anything please.

 

(Just tried posting the individual photos up here but Facebook has changed the gallery and I can't copy and paste photo locations so I've made the photos public).

 

http://www.facebook.com/album.php?aid=274235&id=513988371&l=9d053f14cd

 

Nice one thank you!

[AA Teccie (Paul)]

Oh I hate going first...where's Hama or MonkeyD???

 

It looks very similar of Phytophthora citricola whihc does occur on Limes, albeit far less frequently than HC.

 

Hmmm, hopefully the real experts will now come to my rescue.

 

Cheers..

Paul

[Tony Croft aka hamadryad]

MMMm, Paul, Im no expert! I think it is certainly a Phytophthora, which one would be difficult to call without a detailed look. There is a lot of fear surrounding this group of "pathogens" for want of a better word. I have seen a good few trees overcoming these Phytophthoras, even horse chestnuts, however long sections/strips of phloem die as a result of the infection and embrittle the stem at these sections. With such a young tree I know many very well respected consultants would recommend removal and grinding of stump to avoid contamination of other trees.

 

As I am no expert on these, some links attached for your perusal

Forest Research - Bleeding on oak stems

 

ingentaconnect Re-evaluation of Phytophthora citricola isolates from multiple wo...

 

UC IPM: UC Management Guidelines for Phytophthora Canker and Crown Rot (Citricola Canker) on Avocado

[AA Teccie (Paul)]

Phewwwww...my 'street cred' lives to fight another day, ha!

 

The FC Research Note on HC Bleeding Canker also mentions this on Lime.

 

Cheers Hama..

Paul

[Tony Croft aka hamadryad]

Phewwwww...my 'street cred' lives to fight another day, ha!

 

The FC Research Note on HC Bleeding Canker also mentions this on Lime.

 

Cheers Hama..

Paul

 

lmao, your "street cred " was never under threat! your a highly respected member of our little team

[AA Teccie (Paul)]

lmao, your "street cred " was never under threat! your a highly respected member of our little team

 

This is a first....

 

THANK YOU Sir.

 

Paul

[Tony Croft aka hamadryad]

This is a first....

 

Paul

 

Well it shouldnt be, the members of this forum are very fortunate to have an AA representative here, your pressence and contributions are appreciated by all i am sure:thumbup1:

 

I wish there was more "professional presence" in here

 

Im sure some smart arse will accuse me of a brown nose now!

[Lee Winger]

Come on lads thats an easy diagnose its bleeding canker

[Tony Croft aka hamadryad]

Come on lads thats an easy diagnose its bleeding canker

 

care to elaborate?

 

bleeding canker is a wide term!

[APC]

Thank you for the replies! I was hoping someone might have suggested that it was something innocuous but had my suspicions.

 

Upon reading the FC page, we do have plenty of rhodie around the park, including clumps within less than 10 metres. I have two other trees that I'm concerned about, both getting mature horse chestnuts. I will get photos of them up here but as mentioned, can't be sure from photo so will look at getting them tested. I'd rather be safe than sorry !