Technical note (TN727): Winter Oilseed Rape – Integrated Weed Management

Summary

• Pre-emergence herbicides generally give the most cost-effective weed control
• Early post-emergence is a prudent option if there is a risk the crop will fail to establish
• There are some new early post-emergence herbicides
• Control volunteer cereals early to remove competition and optimise crop establishment
• Consider Clearfield® technology if there may be yield or quality issues due to contamination by volunteer oilseed rape or cruciferous weeds
• Product stewardship for metazachlor, quinmerac, propyzamide and carbetamide is important to prevent contamination of water
• Avoid cultivation straight after harvest as this can increase volunteers in future crops

Read TN727: Winter Oilseed Rape – Integrated Weed Management