1.Mariano Cossani1, Daniel Cozzolino2, Victor Sadras1
1South Australian Research and Development Institute
Delaying sowing reduced yield potential at 0.67 t/ha per °C of mean temperature during critical period for yield determination (20 days pre-10 days post anthesis). Good N nutrition and longer-season spring cultivars reduced the yield gaps in relation to temperature. Responses to N become more erratic when temperatures during the critical period increase above ~14.5 °C. Strategic N management (50-100 kg N/ha) may help to mitigate the effect of higher temperatures on grain number and yield.