foxtail, herbicide resistance, atrazine, Setaria
S-triazine resistance in giant foxtail (Setaria faberi Herrm.) has been reported previously, but not in the midwestern U.S. corn belt or Iowa. A study was conducted using a chlorophyll fluorescence assay to confirm the presence of resistance in one S. faberi population in Iowa. Variable chlorophyll fluorescence assays confirmed that a population of this species with this type of resistance exists in Iowa. This is the first report of s-triazine resistance in S. faberi, and the fourth species with this type of herbicide resistance, found in an Iowa agroecosystem.
Journal of the Iowa Academy of Science
© Copyright 1993 by the Iowa Academy of Science, Inc.
Thornhill, R. and Dekker, J.
"Mutant Weeds of Iowa: V. S-triazine Resistant Setaria faberi Herrm,"
Journal of the Iowa Academy of Science: JIAS, 100(1), 13-14.
Available at: https://scholarworks.uni.edu/jias/vol100/iss1/5