On 2/15/2020 8:59 AM, Ralph Mowery wrote:
In article , says...
"Glyphosate is a broad-spectrum systemic herbicide and crop desiccant
which acts by inhibiting the plant enzyme
5-enolpyruvylshikimate-3-phosphate synthase. ... Once absorbed,
glyphosate moves quickly through the plant and accumulates in areas of
active growth called meristems. ..."

The only reason it doesn't kill zoysia dead is that it's dormant at the
time.

Similar issues with application at times is hot and dry and stuff isn't
actively growing.

Like most other herbicides, against well-established wood brush it will
undoubtedly take multiple applications or combinations to kill all the
roots so it won't re-establish.




I have not used Roundup for a while, but have used other brands that
have the same Glyphosate in them. They cost less for the same
concentration and have other chemicals in them. Mainly something to
help make it stick to the leaves. That is the only place on the plants
that the glyphosate is absorbed. Poision ivy is slick and most sprays
will just slide off. It usually gets rid of the poison ivy without any
trouble if sprayed on during the growing cycle.

Any herbicide that doesn't contain a surfactant with it should have one
added to the mix virtually 100% of the time. Any application without is
pretty-much going to be hit-or-miss unless just soak. For hand
application or spot treatment, just a little detergent will work nicely.

And, yes, "Roundup" is just the trademark name from Monsanto for their
glyphosate line of products. The chemical is the same from other
vendors now that patent protection is over.

As another noted somewhere else, price is partly dependent upon the fact
that the leading brand can carry a premium price tag simply because of
its name recognition; the other factors are concentration and whether
the particular product may/may not contain additional active ingredients
such as combinations of types of herbicide for multiple action
mechanisms or the aforementioned surfactants, etc., etc., ...

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