On 2/9/2012 9:27 AM, Harry K wrote:
....

Odd. I just googled it and your cite is the first on. All the others
on page one say Roundup works fine...as would be expected as RU kills
roots, not top growth. The tops die when they are no longer getting
food.

Glyphosate kills plants by inhibiting 5-enolpyruvylshikimate-3-phosphate
synthase (EPSPS). EPSPS is a key enzyme in the shikimate biosynthetic
pathway which is necessary for the production of the aromatic amino
acids, auxin, phytoalexins, folic acid, lignin, plastoquinones and many
other secondary products.

There are plants that are resistant both naturally as well as
genetically altered ("Roundup Ready (tm)" soybeans, etc.). There have
been instances also of weeds becoming glyphosate-resistant where it has
been used exclusively for weed control over a period of time.

I'm not positive how effective it is on bamboo(s); I'm sure it would
only be very effective on small new growth after a severe mowing if it
is very useful at all.

You might investigate Remedy (tm) as an alternative altho it may be
restricted back east, I don't know...since I farm and have applicator's
license I'm not up on just what homeowner can get otc...

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