A field study was conducted in 1997 to investigate the interaction of N rates (0, 40, 80, 120, 160, and 200 kg/ha) and number of postplanting irrigations. The irrigation treatments were two, three and four postplanting irrigations. In all cases the first two postplanting irrigations were applied at 60 and 80 days after planting (dap). The third irrigation was applied at 100 dap and, the fourth one was applied at 120 dap, for the three and four irrigations treatments, respectively. At any water regime there was lint cotton yield response to N rate. Lint yields were similar for the three and four postplanting irrigation treatments and, they outyielded the two postplanting irrigation treatment by 58 %.