Alberta field survey of herbicide-resistant weeds
Date
2005-02-17
Authors
Beckie, H.J.
Hall, L.M.
Leeson, J.Y.
Thomas, A.G.
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Abstract
In 2001, 236 fields were randomly selected throughout the ecoregions of Alberta and surveyed for grass and broadleaf weeds resistant to Group 1 (ACCase inhibitor) or Group 2 (ALS inhibitor) herbicides. Nearly 20% of surveyed fields had a herbicide-resistant weed biotype. Only 5% of producers with resistant biotypes were aware of their occurrence. This survey serves as a baseline for determining future trends in weed resistance in Alberta.
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Keywords
chickweed, herbicide resistance, spiny annual sow-thistle, wild oat
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Part Of
Soils and Crops Workshop