IPM1007, Revised November 2009
Low doses of ACCase inhibitors such as sethoxydim and clethodim as drift or tank contamination can cause corn to whiten leaves in the whorl.
Postemergence lipid synthesis-inhibiting herbicide like sethoxydim, clethodim and quizalofop causes chlorosis and purpling of corn leaves and will cause the meristem of the newest leaf to rot.
Injury from post-selective grass herbicide. Notice the dead, necrotic meristem of the plant when the whorl is removed.
Quizalofop can cause chlorosis near leaf veins of soybeans. This injury will eventually progress into necrosis.
IPM1007, revised November 2009
Order publications online at http://extension.missouri.edu/explore/shop/ or call toll-free 800-292-0969.