Percent purple nutsedge control by Pic Chlor 60 @ 21G as impacted by mulch. Ponder, Spring 2007-2008.<BR>55 b<BR>38 d<BR>82 a<BR>LDPE <BR>1.25 mil<BR>LDPE <BR>1.75 mil<BR>Blockade <BR>1.25 mil<BR>