Write the Letter of Symptom Description Next to Correct Site of Action Group
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PLANT SCIENCES Name: Herbicide Symptomology
Write the letter of symptom description next to correct site of action group.
____ ACCase inhibitor a. buggy-whipping, trapped shoot, shortened midvein for some
____ ALS Inhibitor b. buggy-whipping, trapped shoot, shortened midvein for some
____ Auxinic c. stunting, chlorosis of new tissue
____ EPSPS Inhibitor d. stunting, chlorosis of new tissue
____ Glutamine Synthetase Inhib. e. white plants
____ HPPD Inhibitor f. white tissue
____ Isoprenoid inhibitor g. interveinal chlorosis, necrosis of older leaf margins
____ Microtubule disruption h. rapid activity, ammonia toxicity causes translucent tissue
____ PhotosystemI Inhibitor i. epinasty, hyponasty, witches-broom
____ PSII Inhibitor, mobile j. very rapid activity, watersoaked tissue, nonselective desiccation
____ PSII Inhibitor, non-mobile k. club-root
____ Tubulin binding l. inner whorl of grasses die
____ VLCFA Inhibitor m. rapid activity to exposed tissue, not much activity on grasses
ON MY HONOR, I HAVE NEITHER GIVEN NOR RECEIVED AID IN WRITING THIS EXAM Signed______