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Emu Rock and Corack were lower yielding than Cobra, Mace, Magenta and Wyalkatchem when sown dry and emerging in second week of May. Varieties sown in late May into moist soil were higher yielding. Low winter rainfall and late spring rains are likely to have influenced the time of sowing and variety responses. Yield response of varieties to early sowing will vary from season to season so disadvantages and advantages need to be clearly considered. Nitrogen application increased wheat yield by 4.8kg/ha for each kilogram of nitrogen (averaged across variety and sowing time) in 2013.
Better variety selection and management may reduce production risks and improve profitability in canola/wheat systems.
The trial was conducted to investigate the value of nitrogen on the profitability of new wheat varieties in early (dry sowing) and late sowings in canola/wheat system at Wongan Hills.
