USE OF INCORPORATED AND NON-INCORPORATED GRANULAR TRIFLURALIN FOR ANNUAL GRASS CONTROL IN BARLEY (HORDEUM-VULGARE), WHEAT (TRITICUM-AESTIVUM), AND CANOLA (BRASSICA-NAPUS)

The comparison of incorporation vs no incorporation on a mid-October a pplication of the granular formulation of trifluralin to control infes tations of wild oat and green foxtail was evaluated in spring barley, wheat, and canola in west central Saskatchewan over a 3 yr period, Inc orporation treatments consisted of: no incorporation, one incorporatio n in fall, one incorporation in fall and a second in spring, one incor poration in fall and two additional incorporations in spring, All trea tments eliminated green foxtail, In all three crops wild oat panicle c ounts were equivalent from incorporated and non-incorporated triflural in, Wild oat fresh weights in crops grown on stubble were similar for incorporated and non-incorporated trifluralin, In fallow crops, wild o at fresh weight reductions were greater in three of nine site years wi th incorporation, There was little difference in crop yields from inco rporated and non-incorporated trifluralin.