The irrigation method did not significantly influence potato yield (Table 2). The water use by potato included irrigation water and rainfall. Rainfall was a small (5.7–12.4%) component of total water use in the treatment with seepage irrigation. On the contrary,rainfall accounted for 36–50% of total water use in the treatment with hybrid center pivot irrigation across the four farms in 2013/2014 season (Fig. 1). The irrigation water varied with different seasons and farms, leading to different water savings for center pivots (Table 3, Fig. 1). The major differences in the two growing seasons were that the cumulative rainfall was greater in the 2013/14 season (10–18 cm on average) than in the 2012/13 sea-son (6.4 cm on average) but the evapotranspiration was lower in the 2013/14 season (15.5 cm) than the 2012/13 season (25.9 cm) FAWN, http://fawn.ifas.ufl.edu/). The growers applied more ‘pivot’ water (accounting for more than 50% of the total water) in the hybrid center pivot systems during the dry (2012/2013) season than during the wet (2013/2014) season (Fig. 1). In both growing seasons, more than 50% of irrigation water was saved in the hybrid center pivot systems. Thus, water use efficiency for the hybrid irrigation system was always significantly greater than that of seepage irrigation (Fig. 2). Nitrogen use efficiency of the trials was 187.5 ± 23.7 lb lb−1. There was no significant difference between the treatments. Currently, in the hybrid center pivot system, water use in seepage irrigation accounts for more than 30% of total water usage. Our data suggests a potential to save more water once center pivot irrigation completely replace seepage irrigation in the potato production area.