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Horn fly resistance eyed in Manitoba ear tag debate
Agricultural notes discuss horn fly resistance to synthetic pyrethroid ear tags in Manitoba cattle herds. Options to delay resistance include alternating ear tag types, using organophosphate products, backrubbers, dusts, or sprays, and switching entirely when resistance is evident. Annual forages offer pasture extension ideas with oats and millet as主 crops for 1989 90 winter feeding preparation.
MENTIONED IN THIS ARTICLE
Manitoba
Andy Kolach
Manitoba Agriculture
University of Manitoba Entomology Department
Atroban
Bovaid
Guardian
Stockaid
Austin
University of Manitoba
Jerry Gramiak