Post-Harvest (Corn) Pigweed Problems<BR>Decreasing daylight hastens flower and seed production <BR>Flowering (3-4 weeks) <BR>Seed production (2-3 weeks) <BR>Some germination at 410F (8%) <BR>Control Options <BR>Mowing/Tillage (>6 weeds) <BR>Herbicides (<6 weeds) <BR>No small grain  <BR>Gramoxone + Dual Magnum or Warrant (?) <BR>Small Grain planted soon <BR>Gramoxone + 2,4-D or dicamba <BR>When can we stop worrying about seed production? <BR>Keeley et al.  1987.  Weed Science 35:199-204  <BR>Steckel et al., 2004.  Weed Science 52:217-221 <BR>