Critical timing of palmer amaranth (Amaranthus palmeri) removal in second-generation glyphosate-resistant cotton.

B. J. Fast, Agronomy Department, University of Florida, PO Box 110500, Gainesville, FL 32611; S. W. Murdock, Monsanto Co., 800 N Lindbergh Blvd, St. Louis, MO 63167; R. L. Farris, Eastern Oklahoma Agricultural Experiment Station, Oklahoma State University, RR1 Box 570, Haskell, OK 74436; J.B. Willis, Monsanto Co., 1677 80th Street, Monmouth, IL 61462; D. S. Murray*, Department of Plant and Soil Sciences, Oklahoma State University, 368 Agricultural Hall, Stillwater, OK 74078 *Corresponding author: don.murray@okstate.edu ABSTRACT