Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Page 15 Page 16 Page 17 Page 18 Page 19 Page 20 Page 21 Page 22 Page 23 Page 24 Page 25 Page 26 Page 27 Page 28 Page 29 Page 30 Page 31 Page 32 Page 33 Page 34 Page 35 Page 36 Page 37 Page 38 Page 39 Page 40 Page 41 Page 42 Page 43 Page 4422 IREC Farmers' Newsletter No. 197 — Autumn 2017 Despite the extended period of ponding, the waterlogged treatment achieved a high grain yield similar to the non-waterlogged irrigation treatment, which can be attributed to the very good soil structure and internal drainage at the experimental site. On a poorer structured or sodic soil it is likely a larger yield loss would have occurred. Lodging Lodging was a significant problem in winter crops in the 2016 season due to the very wet conditions. Although irrigation treatment had no effect on lodging, the higher seed rate (80 kg/ha) resulted in increased severity of lodging compared with the lower seed rate (50 kg/ha). Lodging also increased significantly with increased rate of topdressed nitrogen as often occurs. Water use and water productivity The rainfed treatment received 4.0 ML/ha from rainfall during the growing season, while the one irrigation treatment received an additional 0.74 ML/ha and the waterlogged treatment 1.14 ML/ha from irrigation (Table 2). The waterlogged treatment, which was ponded for 48 hours, used an additional 0.41 ML/ha or 55% more water than the one irrigation treatment, which was ponded for five hours. The rainfed treatment produced the highest water productivity in the experiment with 1.53 t/ML compared with 1.35 and 1.25 t/ML for the one irrigation and waterlogged treatments, respectively (Table 2). As there was little difference in grain yield between the seed rates they both had similar water productivity. The application of topdressed nitrogen increased water productivity due to increased grain yield, as can be seen by the significant interaction between irrigation and nitrogen shown in Figure 2. Grain quality Grain protein increased significantly with increased rate of nitrogen topdressing but was not affected by either irrigation treatment or seed rate (Table 2). The non-irrigated rainfed treatment produced lower grain quality than both the irrigated treatments when averaged across seed rate and nitrogen treatments. The rainfed treatment had significantly lower seed retention (>2.5 mm) and significantly higher screenings (