I'll just say that I would not treat with any chemical or bug spray without having a really good idea of what I was treating and knowing that I was using the proper product. -- I re-read the other post and urban forester did say there is no chemical control for this problem. So then your left with things that support the trees health; fixing any root problems, a nutrient solution like urban forester suggested and possibly a product called cambistat.
It does look like at least that one root is going to be a problem and need to come out. In the second photo, there is a larger root to the left that I just can't see well enough to say if it is growing in a poor direction that may girdddle the tree or not. It might be. I'd consider removing at least the one smaller root, and maybe the larger one as well if it is going to girddle the tree. The little one I would probably do now, If that larger one has to go, I would think about doing that in the early spring.
This tree would likely benefit from a growth regulator called Cambistat, but it is likely more expensive than what you would be willing to spend on this tree. It's about $250 for a 2 liter bottle, which would do far more than just this little tree. It basically halts top growth and allows the tree to grow it's root system for a period of about 3 years, which can give the tree a chance to heal and strengthen it's self.
You could always consider a larger mulch ring, trees will benefit for about as larger of a mulch area as your willing to give. The trees roots will extend far beyond the dripline. So the roots also get any chemicals that you put on the lawn, which may or may not be directly harmful, but certainly don't help the tree.
The treatments have the potential to get quite expensive with no guarantee of saving the tree. I might consider planting a new tree nearby as a eventual replacement and letting it grow for a few years, and not putting any expensive treatment into this tree.
Jamie
My thinking on the permethrin (only)on the
localized wound was, to keep out any ants or borrers(borrer & ant labeled)( I found a few-2-3 ants while digging out the dead bark tissue. I realize they primarily munch on the dead wood and not the live, but I dont want to chance it).
And...my thinking was, If I use wrap to keep borrers and ants out, it'll hold in moisture worsening fungis spore spread. If I use a lose hard material, it will keep out larger pests like rabbits, but not keep out borrers. That is why I thot to use a very small amount, enough to spray directly on the canker keeping insect pests from invading a stressed tree/damaged area not having protective bark. Another option, maybe the best one- I suppose, would be to wrap only
one breathable layer of think black wrap I have(for trees), that will keep out wood chewing/boring pests, as well as not hold in any moisture.
The 2nd root I think will be fine. I really dont believe the first root is hurting anything yet at this point in time, so wouldnt it be a little better to remove it in the dormancy rather than now, mid summer, 100+ degrees...?
I'm still gonna try to find something systemic labeled to treat this type of diease, tho I'll most likely not find a thing.... I would just think if its(eutypella camnker of maple -or other canker maybe) caused by fungal pathogen, then fungicide would help.....but maybe not.
thanks for the assistance..
