Field experiments were conducted in 1996 at the Southeast Research and Extension Center, near Rohwer, AR and at the Delta Research and Extension Center Stoneville, MS to evaluate cotton response using combinations of Prep (ethephon) and Finish (ethephon and cyclanilide). Deltapine 50 was planted at both locations. At both locations Prep at 1.0 and 1.5 lb ai/A and Finish at 1.0, 1.5, and 2.0 lb ai/A were evaluated alone and in tank mixtures at 1.0 lb ai/A with Dropp (thidiazuron) at 0.05 lb ai/A or Folex (tribufos) at 0.375 lb ai/A. Other tank mixtures included Dropp at 0.05 lb ai/A + CottonQuik (ethephon + AMADS) at 4.2 lb ai/A and Dropp at 0.05 + Harvade (dimethipin) at 0.31 lb ai/A + crop oil concentrate at 1.25% by volume.