I need a quick reply on this issue I am dealing, the bark on this tree is turning black. I have noticed it at the base of the tree, now since my last post I am seeing it in other places. I don't know what fungus I am dealing with or how serious it is. I plan to do a soil drench with P____ton and would like to know if anything else is needed. I am wondering if injection would be a better use of the product. If someone decides to delete my message, please tell me so I don't depend on getting an answer here, and it would be nice to know why. This is the second time I have had to posted and I don't have a clue as to why. Maybe I should be in the maple society forum.
Hopefully others with more knowledge and experience will chime in, but unless you're very, very lucky (based on my own experience), I think your tree is done for. :( I think this is pseudomonas, which is very, very difficult to treat and save the tree. I've used phyton 27 too, on the recommendation of a nursery grower, and it seems to work well for me; I've never used it as a drench, only as a topical spray, so give it a try that way too. I'm guessing it's a Sango kaku, or other coral-bark (based on the picture) that's affected? Unfortunately, they are quite prone to this and die-back in general. With the way you have the large black spot at the base of the trunk, I think it's a goner. Two links that have been posted in the past with regards to this issue: http://www.hort.uconn.edu/ipm/nursery/htms/bblworn.htm http://japanesemaplediseases.blogspot.com/ Also, do a search on pseudomonas for more info. Sorry I couldn't be more helpful or offer more hope for your tree. :(
Hi, Not sure what might have happened to your messages, that's a bit bizarre. I agree with Andrea, sorry to say I think there is only a small chance for recovery here. I'd spray it with copper (P27 is mostly copper I believe) every week. But even if you do get the pseudomonas (as it looks to me) under control it will leave you with a weakened plant that may succumb to something else. I wouldn't drench the soil, you risk to kill beneficial fungi without helping the tree in the slightest. Good luck, -E
The other thread is here: http://www.botanicalgarden.ubc.ca/forums/showthread.php?t=77374 (PM has been sent regarding deleted messages.) I agree with the previous comments that it does not look good for this tree. If it was on an upper branch I would recommend cutting off the branch entirely but that is obviously not possible here. Give it a few weeks and if it continues to decline then you will be best off replacing it.
