Abstract:
Control of Boophilus microplus by pasture spelling, planned dipping, and simulated 'conventional' control methods was compared in duplicate herds of British cattle, and by simulated 'conventional' control methods in duplicate herds of Zebu x British and a single mixed herd of Zebu x British and British cattle. Herds under conventional control were treated with an acaricide (dipped) when the count of 'standard' ticks (5 mm or more in length) on the right side averaged 20 or more per animal. Herds under pasture spelling grazed alternately in two adjacent paddocks; the summer spelling period was 3