The roots were grown under exactly the same cultivation and conditions as a crop of mangel-wurzel - that is to say, they had the ordinary cultivation and manuring of the usual root crops.
The area, however, under green crops - potatoes, turnips, mangel-wurzel, beet, cabbage, &c., shows during the same period a much less marked decline - only some 300,000 acres.
Since about 1885 the acreage under turnips has remained fairly stationary in the neighbourhood of 300,000 acres, while the cultivation of mangel-wurzel has considerably increased.
