Where autumn residuals were applied, in many cases they have worked well. If weeds have escaped the autumn residual, or nothing has been applied yet, only broad-leaved weeds can be controlled in the spring. There are no herbicides for grass weed control in winter oats in the spring. Winter oats are sensitive to herbicides – don’t treat during periods of cold weather, or if the crop is under stress. Always check the label.
Plant growth regulators
Thicker crops in a high fertility situation are, particularly at risk. Weaker varieties are at greatest risk.
Straw strength ratings of varieties on the 2020 Scottish Recommended List are given below:
- Dalguise – 4
- Gerald – 6
Growth regulators are effective on actively growing crops. Do not treat crops under stress.
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