Canola herbicide systems, pre-emergent herbicides and variety hybridity: their effect on the control of annual ryegrass

To compare the yield, profitability and level of weed control of three canola herbicide systems (TT, RR and RT) using a combination of pre-emergent herbicides and canola varieties. The benefit of hybrid canola varieties compared to open-pollinated (OP) varieties was also investigated in the northern WA Wheatbelt by Bayer Crop Science and Nufarm Australia