Kay Lancaster wrote:

[....]

I've successfully killed small populations of yellow nutsedge (Cyperus
esculentus) by putting on a cotton glove over a nitrile glove, and
then dipping finger and thumb into some glyphosate. Draw the leaves
of the sedge between finger and thumb.. then move on to the next plant.
Tedious, but effective.

Kay

I like your style Kay.

when you want what you want and are willing to work
to obtain it then the satisfaction of having it can
not be beat.

a small paintbrush provides excellent application control
when there are desirable plants located in such a way as
to make spraying impossible. but the technique requires
that you really want what you want.