Pratchler, J., Shirriff, S. W. and Beckie, H. J. 2014. Quick test for qualitative detection of glyphosate-resistant kochia (Kochia scoparia L. Schrad.). Can. J. Plant Sci. 94: 1413-1417. A growth chamber study was conducted to determine the feasibility of developing a quick, yet reliable assay to detect glyphosate-resistant (GR) kochia. Seeds of six kochia populations, three GR and three non-GR (susceptible), were placed on filter paper in dishes treated with varying doses of glyphosate. After 7-d incubation, seedlings with a true leaf (i.e., not cotyledons) at 25 mg L^-1 glyphosate accurately distinguished GR from susceptible kochia seed lots. This bioassay can facilitate more timely confirmation of GR kochia, thereby aiding resistant weed management.