The objective of this experiment was to compare the effects of multiple applications of four formulations of mepiquat chloride on plant growth and yield. The formulations were: Pix, Pix-Plus, Pix-Ultra, and BASF experimental chemical 130W applied at match-head square and then as needed based on height to node ratio in the plant. The rates were determined using the MEPRT program that uses plant height and number of nodes as inputs. The experiment was planted on 38" rows with DP 33B in a randomized complete block design. The experiment was irrigated according to calculated evapotranspiration. All formulations were applied at the same rates and times. The first application was at match-head square at a rate of 3.0 oz./acre. The second application was a month later at a rate of 9.4 oz./acre. A plant mapping was performed at harvest to determine differences in vegetative and reproductive development.