Crop competition for weed control and mainenance of yield in Western Australia

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Multiple trials from 2018 to 2021: T1 ARG and WR The interaction between the seeding rate and row spacing of hybrid and open pollinated canola (Brassica napus) varieties on ryegrass (Lolium rigidum) and wild radish (Raphanus raphanistrum) growth and competition. T2 ARG and WR The interaction between the seeding rate and seed size of hybrid and open pollinated canola (Brassica napus) varieties on ryegrass (Lolium rigidum) and wild radish (Raphanus raphanistrum) growth and competition T4 ARG and WR The contribution of nitrogen fertilizer timing and placement in reducing the growth and seed production of ryegrass (Lolium rigidum) and wild radish (Raphanus raphanistrum) in competition with wheat (Triticum aestivum).