Glyphosate Crossing Through Roots

[D Mc]

"....As an aside, the manufacturers' expert told me that Glyphos (the actual brand I used) has an extremely short life in soil, and used correctly it is possible to spray off a stubble field and then re-seed 6 HOURS later! ..."

 

Listening to the Bartletts experts very recently, they were unequivocal in their suspicions that glyphosate.., how should I put this to best reflect their advice?...may not behave in all cases as the manufacturers claim with regards its inactivity on contact with organic soil matter. In particular I remember being made aware of "accumulation" levels of the stuff in trees....This kind of issue is by its nature quite tricky to prove as it will typically manifest itself much later......

 

Don't know if this has been linked somewhere else but this is interesting information on the misuse and accumulative side effects of glyphosate that we should all be aware of.

 

Use Glyphosate Properly to Protect Woody Plants

 

Dave

[mdvaden]

A very fair point, and I take on board what you say about the chances of regrowth. Does this mean you never poison stumps if root plates overlap? How do the forestry boys seem to get away with it then?

 

What are they "getting away with" - and is it forest forestry, or urban tree care?

 

I'm guessing that the tree this topic is about is a bit speculative, not knowing for sure if roots were grafted.

 

Life of Glyphosate in soil won't be applicable much, because it lasts for a year or more inside plants.

 

Photos like this one taken in a park are a good reminder why some stumps have to be treated at times as an extension of the other tree beside.

[monkeybusiness]

I'm talking about the use of stump treatment in forestry when thinning operations take place - all the trees' root plates will be intertwined and probably grafted, yet i'm not sure if there is a common incidence of Glyphosate finding its way into trees that are left to grow on. The trees in question here are nowhere near as close as your pic - I will get some pics uploaded to try and make things clearer.

 

Great feedback from everybody - thanks for your time and insight.

[Bundle 2]

Oh..& I just remembered...glyphosate evaporates at 26 c and more.

[Giles Hill]

I'm talking about the use of stump treatment in forestry when thinning operations take place - all the trees' root plates will be intertwined and probably grafted, yet i'm not sure if there is a common incidence of Glyphosate finding its way into trees that are left to grow on.

 

Great feedback from everybody - thanks for your time and insight.

 

I think glyphosate is used in forestry mostly for foliar treatment of weeds, rather than for stump killing.

 

Conifer stumps don't regrow - i.e. not the species normally used in forestry.

 

Are you sure it's used on decidous stumps when thinning deciduous woodland?

[Highland Forestry]

In forestry applications, we treat stumps, conniferous or decidious with urea..... not glyphosate.

The stumps will rot by themselfs, the urea keeps out infection to co-joined and grafted root systems.

The glyphosate will do exactly what has been described, and kill adjoining trees, simply because that's what it's supposed to do.

BUT in this case, I would think you must have put one hell of a dose down to kill a mature beech...... and you may find that it will suffer this year but come back strong next year.