I'm not sure of the "GT" part, but I think old Pinnacle was same as old Harmony. Harmony was available for wheat use many yrs ago. Then, some guys started using it @ reduced rate on sb (probably off-label...but those guys are probably all gone now anyway). A couple yrs later came the product Pinnacle. Same a.i. @ a different %. Then Dupont made Harmony Extra w/a broadleaf component that kind of put the dampers on using it for sb. Harmony was about 1/6 price of Pinnacle. I believe they term it "oppurtunity pricing". Again-not sure of the GT though. | 
Do we need to add anything for lambsquarters?
