Studies on pyrethroid ear tags and pyrethroid resistance in horn fly populations in Manitoba
This study was undertaken from 1987 to 1990, in Manitoba. A producer survey was conducted in 1987 to determine the extent of insecticidal ear tag usage in Manitoba. More than 80% of the 200 cattle producers who responded to the questionnaire applied tags to control flies. Ear tags were more rapid...
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2012
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| Online Access: | http://hdl.handle.net/1993/7220 |