posioning stumps root grafted to other trees

[Yeahman]

Have a job i'm currently doing, thinning out dense stands of trees to allow more sunlight in. which will hopefully encourage more grass to grow. Alot of these trees are of the same species. i'm requirde to remove selected trees cutting the stump as low as possible and then posion the stump.

I have been a little bit worried about root grafting, i'm hoping that because i posioned one stump i wont be killing a tree naturally root grafted to it?

has anyone found this to be a concern or have any suggestions?

Thanks

 

[B-Edwards]

I dont know the answer ,, but thats a fine question!!! I have wondered the same thing before for different reasons. Very enteresting.

 

[Yeahman]

Tree Co, the owner wanted to cut all the trees down. I convinced them that it was better to Thin them out. do you think i should've said "yeah good idea let's cut em all down"?

thanks mate.

 

[Kneejerk Bombas]

The herbicide will move from stump to living trees readily through root grafts.
The best bet might be to grind the stumps, especially if they are trying to establish lawn.

 

[ROLLACOSTA]

Not to the point but I'm strongly against trimming and thinning trees to allow grass to go. Grass doesn't grown well under trees for a reason and damaging the trees to give the grass an advantage is a sin IMO.

Well well we agree on something..:hmm3grin2orange:

 

[ATH]

What species of tree?

Some are more prone to root grafting than others.

Also (probably more importantly), some pesticides act a little "hotter" on certain species. My inclination is to use Round-up (it is labeled to be used for stump treamtment at somewhere between 20-40%). Round-up moves less in the soil than others. Also, it doesn't work as well as Tordon, Garlon, etc. anyhow...so less chance of successful kill on the non-target plants.

Here is a publication on the reletive effectivness of a few herbicides on a long list of species.

 

[pbtree]

The herbicide will move from stump to living trees readily through root grafts.
The best bet might be to grind the stumps, especially if they are trying to establish lawn.

I concur with Mr. Maas... I would avoid adding any poisons, as there is a good possibility that it will migrate to other trees that you wish to preserve.

Grind stumps you wish to eliminate, and that should prevent anything from causing you any grief...

 

[Ax-man]

Thanks ATH for the link, I have been looking for some information like that and got it printed out for future reference.

Just to add a little to the thread, I have to agree with Mike Maas. We have used cut stump herbicide applications to keep our farm property hedge rows under control, we like to see trees mark the property lines but only desirable trees and at a certain density. Trying to control this stem density with herbicide has resulted in non target trees being killed via root grafts using Pathway. Elm and Hackberry are in the same tree family and are very susceptible and sensitive to root graft herbicide poisoning.

Poisoning from run-off of over applying a herbicide can also kill not targeted species. We have evergreens marking a property line, with an overhead single phase electric wire, mulberries grow up between the evergreens because of the birds sitting on the wire, normally we just cut the mulberries out, but one in particular was getting to big for my taste down at the stump. I applied some Pathway to it and was very careful, but as luck would have it the surrounding Junipers and Arborvitae (?) are now on the way out. It is no big loss as it just a lane leading to a cornfield and our neighbors house, but if that had been a clients property it would not make me look good as an arborist.

I haven't done much experimenting with this method, but instead of the cut stump method, what kind of results would you get if you were to allow the growth to resprout then hit the foliage with some hebicide. I have tried this on Siberian Elm it works but doesn't give complete control, most trees are killed but some trees will resprout from the roots a short distance from the stump.

 

[Kneejerk Bombas]

Why can't anyone spell my name?

 

[Ax-man]

Sorry , I should know better too, shame on me, I'll edit it. It is so easy to spell it that way when one is typing.

Larry

 

[pbtree]

Why can't anyone spell my name?

Sorry - I went to public school....

 

[ATH]

...but instead of the cut stump method, what kind of results would you get if you were to allow the growth to resprout then hit the foliage with some hebicide.

Less control, but MUCH safer for non-target species - especially if you use Roundup at 2%.

As to your property line trees:
Pathway is pretty "hot" in the soil, so I would expect that to travel more than others.

It is a little easier to take broad-leaves out of conifers, as the chemical companies have invested in herbicides for pine management. If you use a broad leaf specific herbicide (for example, 2-4-D) on those mulberry, you will probably be happier with the arbs later.

 

[Yeahman]

Trees being targeted are Eucalyptus, they have some hobbie horses on a limited amount of land, they need the grass to grow to feed the horses.

we're talking a couple thousand stumps to grind? do you think pruning the regrowth off the stump will eventually exhaut it's energy reserves? or if it's rootgrafted will it be able to tap into another trees energy? what about covering the stump with black plastic of something?

Thanks for your respones,
I spelt poison wrong, let's hope i learn from others though!

 

[juststumps]

Trees being targeted are Eucalyptus, they have some hobbie horses on a limited amount of land, they need the grass to grow to feed the horses.

we're talking a couple thousand stumps to grind? do you think pruning the regrowth off the stump will eventually exhaut it's energy reserves? or if it's rootgrafted will it be able to tap into another trees energy? what about covering the stump with black plastic of something?

Thanks for your respones,
I spelt poison wrong, let's hope i learn from others though!

so, we are not talking another person that bought a wooded lot,,, and now wants a lawn,,,,,

we're talking about a horse pasture???? How big are these trees??????? a couple thousand stumps on a limited amount of land,,, they can't be very big stumps......i'm no expert,, but using poisons on grazing land,, doesn't really seem to smart.... just keep mowing any sprouts........

wait a second,,, too many to grind,,, but not too many to spray,,,, prune shoots,, or cover with black plastic????