Regulations 20 and 22
| Crop | Maximum nitrogen rate (kg/hectare) |
|---|---|
(a) Nitrogen must not be spread on crops after 31 October. | |
(b) An additional 50 kg of nitrogen per hectare may be spread every four weeks during the closed period up to the end of harvest. | |
(c) A maximum of 40 kg of nitrogen per hectare may be spread at any one time. | |
| Oilseed rape, winter(a) | 30 |
| Asparagus | 50 |
| Brassica(b) | 100 |
| Grass(a) (c) | 80 |
| Over-wintered salad onions | 40 |
| Parsley | 40 |
| Bulb onion | 40 |