Preemergence and Postemergence Herbicide Combinations for Weed Control in Melons

Abstract

Sandea at 0.05 lb ai/A tank-mixed with Matrix at 0.02 lb ai/A and applied POST following Prefar applied preemergence on cantaloupes gave very good control of pigweeds, lambsquarters, purple nutsedge, and junglerice. Melon injury was just acceptable at 15%. The tank-mix treatment applied POST was similarly effective on the pigweeds, lambsquarters, and nutsedge but grass weed control decreased slightly and melon injury increased when following preemergence herbicide treatments of Dual Magnum, Outlook, or Chateau. Single or multiple POST applications of Sandea alone were not effective against pigweeds.