Abstract. A better understanding of how bermudagrass (Cynodon spp.) regrowth is influenced by production inputs will aid in advancing precision management. The objectives were to evaluate the effect of irrigation and nitrogen (N) on normalized difference vegetative index (NDVI) during regrowth and evaluate the relationship between NDVI during regrowth to forage yield. Normalized difference vegetative index (NDVI) data were collected in an experiment evaluating two harvest schedules (four or eight week), four rates of irrigation (0, 4.2, 8.4, or 12.5 mm of water each irrigation event), and three rates of N (season total of 168, 336, and 504 kg N ha -1 ). Both irrigation and N influenced NDVI of bermudagrass during the regrowth periods of both the four- and eight-week harvest schedules, but there were no irrigation by N interactions. As was expected, regrowth (as measured by NDVI) in response to irrigation was dependent on the timing and duration of rain-free periods within the regrowth periods. Generally, NDVI increased with increasing N rate at most sampling dates. Regression slopes of yield versus NDVI measured near the end of the regrowth period were higher for the eight-week harvest schedule than for the four-week schedule. Within each harvest schedule, however; slopes were similar. The high correlation coefficients between NDVI late in the regrowth period and yield suggest NDVI is a useful tool for managing bermudagrass harvests.