Summary<BR>Addition of residual herbicides to POST herbicides improved control of TSW. <BR> <BR>Atrazine and Axiom provided less residual control of TSW than Dual Magnum. <BR> <BR>Aim, Evik, or Gramoxone tank-mixtures with Dual Magnum provided the best control. <BR> <BR>However, corn yields were not improved enough to justify cost of treatments. <BR>