— 33 IREC Farmers' Newsletter No. 200 — Spring 2018 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 Aerial Drill DPW DPW + PPF Header grain yield (t/ha @ 14%) 260 kg/ha 390 kg/ha 520 kg/ha Figure 1. Header grain yield of water management treatments from Leeton experiment, at 260, 390 and 520 kg/ha urea, average of Reiziq and Sherpa varieties (l.s.d. (P