PERSISTENCE OF DINITRAMINE AND TRIFLURALIN IN NOVA-SCOTIA, CANADA

This study was conducted to determine the persistence of trifluralin and dinitramine, the two soil-incorporated herbicides, under the climatic and edaphic regime of Nova Scotia. Carry-over from one year to the next of phytotoxic residues resulting from herbicide treatments not normally considered ″residual″ has commonly occurred suggesting an increased persistence of some herbicides in Nova Scotia compared with other agricultural areas of North America. In the study, loss of herbicide from dinitroaniline treated soils was determined following two application dates in mid-May and late-November.