Grazon P+D<BR>Picloram (0.54 lb/gal) and 2,4-D (2 lb/gal) <BR> <BR>Picloram was first introduced in 1963 as Tordon 101 <BR> <BR>WSSA MOA #4 (synthetic auxin) <BR> <BR>broadleaf annual and perennial weeds in rangeland and permanent grass pastures <BR> <BR>Picloram has average field half-life of 90 days (20-300 day range) <BR> <BR>