Populations ranging from 53,300 to 107,300 plants/A in 7.5-inch rows or 36,300 to 48,500 plants/A in 30-inch rows did not show differences in lint yield, height at maturity, nodes/plant, and percent boll retention of cotton grown on a Catalpa silty clay soil. Ultra narrow row (UNR) cotton planted late in 1998 (6/08) initiated bloom and matured earlier in 7.5-inch rows than in 30-inch rows regardless of population. However, UNR cotton planted in 1997 (5/23) showed no difference between 7.5 and 30-inch rows for earlier bloom or maturity.