Edibility of Bulbs - Allium - Round up

Tim Eck via pbs pbs@lists.pacificbulbsociety.net
Thu, 25 Mar 2021 18:26:59 PDT
Detergents reduce the surface tension of water, allowing it to enter a
smaller diameter tube, so it would help in this case, whether it wet the
tube or not.

On Thu, Mar 25, 2021 at 8:58 PM rrodich--- via pbs <
pbs@lists.pacificbulbsociety.net> wrote:

> Robin says:
> Judy's reply regarding snipping off tops to allow herbicide to go into
> tubes of leaves is so sensible, I can hardly wait to try it! I'll also use
> a few drops of detergent as a sticker.Perhaps someone with technical
> knowledge can weigh in, but I'm not sure adding soap or detergent will help
> as a surfactant with Round Up.  Glyphosate likes to latch on to
> particulates so tightly, that it renders the chemical "inactive" for
> plants.  This is why it is recommended never to use dirty water, and use as
> clean water as possible to mix it.  Since soaps and detergents molecules
> have both polarized ends and a non-polarized ends, logically it would seem
> that they could latch on to glyphosate quite easily, whatever the bonding
> mode may be, and render the Round Up less active (?).  In addition, if
> applying to a cut surface, there is no waxy coating to overcome in plant
> sap. What would be the purpose of an additional surfactant, on top of a
> surfactant already in the product that is made specifically
>  to work with active ingredient?   This is only what I consider sound
> conjecture on my part.  Comments? Rick RodichJust west of Minneapolis, MN,
> where ramps don't mind a south facing hillside, as long as spring moisture
> is ample.
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