Timing of nitrogen for canola grown in the medium rainfall areas of Western Australia

To investigate the N rate and time of application response of canola varieties to yield and oil content of Triazine tolerant (TT) and Roundup Ready (RR) hybrids in comparison with open-pollinated (OP) types to:Provide growers in lower rainfall environments with guidelines on times of application to maximise grain and oil yields.Determine if the management of hybrid canola nutrition is different to that of open pollinated varieties due to different responses to N rates and timing.