One potential advantage of a wick application of mepiquat chloride is that it applies the chemical only to plants that are taller than the height at which the wick is set. The vast majority of cotton fields are non-uniform, and contain areas in which cotton growth is often delayed and short. By using a wick applicator for early applications and not applying mepiquat chloride to the plants in these shorter areas of a field, then following with a broadcast sprayed application, there is the potential to achieve a more uniform plant height across the field. The wick uniformity trials are investigating this potential at two locations in 1999. Experimental design was a split plot with subplots being 4 rows planted on time and 4 rows planted approximately three weeks later. Treatments to the whole plot include sprayed and wicked applications, various rates, and timings of mepiquat chloride triggered by either the growth of stage of the early planted or late planted cotton.