A total on nine field tests were conducted in 1994 and 1995 in the San Joaquin Valley of California to evaluate the effects of Pix on growth and yields of Pima (Gossypium Barbardence) cotton. Plants were mapped at mid season and again prior to harvest to determine differences in growth characteristics due to Pix applications. Yield data were collected and lint samples sent to a laboratory for quality analyses. Significant differences existed among the means of plant height, height to node ratios, and total nodes, in various tests. A Pix treatment which included 0.5 pints applied at full bloom and 14 days later yielded significantly more than the untreated control in one test. Although there were no further significant differences, Pix treatments out yielded the control in every test.