North American Fruit Explorers mailing list at ibiblio

[tanis cuff <tanistanis@hotmail.com>]

The recommendation over here in WI is RoundUp-- or generic glyphosate-- 
concentrate cut 50-50 with water, apply it the same day, and temperatures 
above freezing.   And best season is late summer thru autumn, and into winter 
if snow isn't deep.  I don't know how this works when the AIR is above 
freezing temp but the SOIL is frozen, but I've seen it work.  

Sometimes you need to do follow-up treatments on regrowth, but, on average, 
you use 1/2 the chemical.  And you can do the work in cooler weather.

Sorry, I don't have any reply for the original question!  But when trees are 
on public land, it can be helpful to track done the land manager, and chat.  
Maybe there is a long-term plan to remove those trees anyway.



> Date: Sat, 12 Jul 2008 16:26:28 -0400
> From: dwoodard
> To: nafex
> Subject: Re: [NAFEX] How to kill tree roots?
>
> In a local park naturalization project, we have had some success with
> cutting Manitoba Maple (box elder) and preventing regrowth, by applying
> full strength Roundup to the cut stumps within two minutes.
>
> It has been recommended to me to carry out this procedure only when the
> temperature is 24 degrees C. or above, and we have tried to comply.
>
> The same procedure has not succeeded when applied to numerous sprouts
> from the root system of a poplar which was cut down a few years ago,
> probably because not all the sprouts were cut and treated.
>
> An internet acquaintance in Ireland has told me that he has had success
> with petroleum jelly mixed with 10% diesel fuel. I have not tried this yet.
>
> Doug Woodard
> St. Catharines, Ontario, Canada
>
>
>

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