phytotoxicity test

RLK11 at RLK11 at
Fri Jan 7 14:29:06 EST 1994

As part of a class project, we would like to have students conduct a
seedling growth toxicity test using the herbicide atrazine.  We will
be testing corn seedlings but would also like to test a "weed" species.
Any suggestions as to a weed which is commonly associated with corn
crops?  Also... would anyone have information on, or suggestions as to
atrazine application dosages which would give us detectable results?
Ideally, we would like to apply atrazine at 4 or 5 different levels in
addition to our controls to obtain concentration response curves.
Proposed response variables include both mass and lengths of roots,
shoots, and entire plants.  Any help regarding this matter would be
greatly appreciated. :)


Ray Kepner                           ***************************************
Graduate Degree Program in Ecology   *                                     *
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