PPO-Resistance<BR>Very popular herbicides <BR>11 species worldwide <BR>4 species in US <BR>Palmer amaranth <BR>AR, IL, TN (confirmed) <BR>AL, MS, NC, SC (suspected) <BR>tall waterhemp <BR>IL, IN, IA, KS, MO, MN <BR>common ragweed <BR>DE, NC, OH <BR>goosegrass <BR>NC, VA<BR>