Plot Sprinklers for Irrigation Research

Portable plot sprinklers were developed that allowed individual plots to be irrigated independently of other plots. Each plot sprinkler consisted of three rotary-pendulum, square-pattern sprinkler heads mounted on a PVC pipe frame. Plot sprinkler water ouptut was 0.9 m 3 h -1 , on an area 4.6 m wide by 13.7 m long, with C u =80%, when operated at 86 kPa. Plot sprinklers were used to apply irrigation treatments in a randomized block design to evaluate potato (Solanum tuberosum L. Russet Burbank') turber quality response to six levels of transitory drought stress during early tuber bulking []