Regulation 25 Cover in winter
After harvesting a crop other than grass the controller shall ensure that from the date of harvesting to 15th January in the following year, one of the following conditions is met on the land at any time—
(a)
the stubble of the harvested crop remains in the land;
(b)
the land is sown with a crop which will take up nitrogen from the soil; or
(c)
where soil or weather conditions prevent a subsequent crop from being sown, appropriate measures are put in place to limit soil erosion.