Manitoba field survey of herbicide-resistant weeds
2005
Beckie, H.J. | Leeson, J.Y. | Thomas, A.G. | Andrews, T. | Brown, K.R. | Van Acker, R.C.
Non-Peer Reviewed
Show more [+] Less [-]In 2002, 150 fields were randomly selected throughout the ecoregions of Manitoba and surveyed for grass and broadleaf weeds resistant to Group 1 (ACCase inhibitor) or Group 2 (ALS inhibitor) herbicides. One-third of surveyed fields had a herbicide-resistant weed biotype. Two biotypes new to western Canada are Group 2-resistant green foxtail and redroot pigweed. Of producers with resistant biotypes, 10% or fewer were aware of their occurrence.
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