[MAIPC] triclopyr and glyphosate

[Mark Frey]

Scott

You'd better check the labels to be sure but I have had good luck spraying
glyphosate mixes down even below freezing (although the soil has been above
freezing) and I have sometimes added Ammonium sulfate - it is supposed to
help in the cold. we routinely treat celandine in the 30s and 40s with 1%
Rodeo and have good luck with no Ammonium sulfate.

extreme temperatures have led to the salts crystallizing and then being
hard to get back into solution. If you don't have crystals and the
herbicide isn't more than five years old I wouldn't worry about it. Someone
else may have a more authoritative answer on that though!

Mark

On Wed, Mar 7, 2018 at 11:01 AM, Scott Baron <baron.scott at gmail.com> wrote:

> Good morning, invasive fighters.
>
> I have a couple of questions for which I can't find a definite answer.
>
> 1) Is there a minimum air temperature for effectiveness of triclopyr and
> glyphosate?  I've heard of temperatures of at least 40 or 45F for
> glyphosate and I think I read 50F (10C) for triclopyr.
>
> 2) Does anyone know if (triclopyr and glyphosate) "go bad" after reaching
> a certain temperature in storage?
>
> I see that Garlon 3A (triclopyr) should be stored "above 28F or agitated
> before use."  Aquaneat (glyphosate) should be stored "above 32F to keep
> from crystallizing.  If allowed to crystallize, warm to 68F (20C) and mix
> well or recirculate to redissolve before using."  Does anyone have anything
> to add?
>
> Thank you,
>
> Scott Baron
> Gaithersburg, Md.
>
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