Sulfonylurea spray contamination damage to canola

摘要

EVERY year large areas of canola are damaged by non-target crop herbicides resulting from boom-spray contamination. Sulfonylureas (SUs) belong to the Group B herbicides and include tria-sulfuron (Logran), metsulfuron-methyl (Ally), sulfosulfuron (Monza), thifen-sulfuron-methyl (Harmony) and chlor-sulfuron (Glean). They are used in farming systems to control a range of grass and broadleaf weeds in cereals. While these herbicides are useful in the farming system they can cause considerable damage to non-target crop species due to the difficulty in decontaminating all boomspray components and the potential for crop damage at low concentrations. SU spray contamination can cause significant yield loss in canola and the cost to canola growers, when it occurs, is high.