Ravap was applied daily to cows via a walk-through sprayer. A herd of 135 cows and 117 calves served as an untreated control. All herds except the Ectrin (1 tag/every third cow) and Atroban (1/every other cow) groups were cow-calf herds. Fly counts were taken on 15 randomly ...
Treatment of one beef animal per herd with permethrin for horn fly control. Unrestrained cattle were treated on summer pasture with a CO2-propelled hand sprayer operated from a pickup truck by the driver. Treatment of an individual... TL Harvey,JR Brethour - 《Journal of Economic Entomology》...
When fly control for each species was less than 65%, the test was terminated. All data was analyzed by the analysis of the variance and significance was checked at the 0.05 level.doi:10.1093/iat/4.1.208aSteven J. BrownF. KnappInsecticide and Acaricide Tests...