Atrazine is not Roundup, but...

[Mike Quinn]

Atrazine is one of the most widely used herbicides in the United States.

Under moist and warm conditions, the half-life of atrazine in topsoil is
about 60 days. In subsurface soils or in water, atrazine's half-life is
generally longer. The combination of widespread use and relative persistence
in the environment help account for its frequent detection in surface and
ground waters.

Atrazine

Trade and Other Names: Trade names include Aatrex, Aktikon, Alazine, Atred,
Atranex, Atrataf, Atratol, Azinotox, Crisazina, Farmco Atrazine, G-30027,
Gesaprim, Giffex 4L, Malermais, Primatol, Simazat, and Zeapos. 

Over 64 million acres of cropland were treated with atrazine in the U.S. in
1990.

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