A common concern about the use of herbicides is their effect on water quality. To address this concern, a program was undertaken in the Revelstoke area to monitor herbicide residues in surface water draining a cutblock on which Roundup was operationally applied. Originally it was introduced by Baird et al.
Application is made as a post-emergence spray to the target vegetation.
Uptake is through the foliage, from where the herbicide is translocated through the plant. Studies related to glyphosate have been compiled by Chykaliuk et al. Norris et al. In addition, current practice involves using a 100-m or wider buffer around water courses where aerial application of herbicide is planned. Little information exists in southeastern British Columbia on the movement of glyphosate under local conditions.