The objective of this work was to evaluate the effect of split dosis of mepiquat chloride on the cotton cultivar IAC 22 at Jaboticabal, SP. The experimental design was in completely randomized blocks constituted by 13 treatments, and four replicates. The effect of dosis on plant height was more pronounced than the splitting effect. The smallest dosis used (55 g/ha) was enough to declare plant height to less than 1.30 m, at harvest. The effect of mepiquat chloride reduced branch length and provided better reproductive/vegetative relation. The effects on boll weight, 100 seed weight, percentage of fiber and seed yield were not significant.
Gossypium hirsutum; growth regulator; cotton seed
