Horn Flies – Control on Beef Cattle by Ed Jennings Posted: July 19, 2018 Leave a Comment Horn flies are one of the most economically damaging external parasites in beef cattle operations in Florida. The summer of 2018 in Levy County is shaping up to be a very active year for horn… Read More Category: Agriculture, Livestock, Pests & Disease Tags: cattle, horn flies, Levy County Extension, NFLAG, North Florida Livestock Agents Group