Fig. 1. Changes in volumetric soil moisture content under deficit irrigation in 2002 and 2003. In 2002, irrigation treatments were applied from 1 July through 18 August and then again from 13 September through 1 November. In 2003, treatments were applied from 27 June through 8 September and then again from 1 October to 1 November. Graphs (A) and (B) demonstrate general species changes in soil moisture as a result of the deficit irrigation. Graphs (C) and (D) demonstrate the general changes in soil moisture in response to varying levels of deficit irrigation for all three bentgrass species. Symbols indicate the irrigation treatment as a percentage of ET measurements using weighing minilysimeters. Vertical bars are LSD values (P = 0.05) indicating statistically significant differences for species and irrigation treatment comparisons at a given day of treatment.