Glyphosate/Manganese Tank-Mixes<BR> research from VA  has shown that Mn will reduce weed control when tank-mixed with glyphosate <BR> 9 to 38% reductions depending upon species <BR>Mn not a problem with Blazer, Classic, Pursuit, or Basagran.<BR>Sources:  Bailey et al., 2002 (Weed Technology 16:792-799) and  <BR>Heckman et al., 1999 (Journal of Production Agriculture 12:445-448)<BR>