CULTURE 



455 



Brassica oleracece. Cabbage, cauliflower, broccoli, kohl-rabi, 

 kale, brussels sprouts. 



Brassica napus. Rape. 



Brassica campestris. Rutabaga or Swede turnips. 



Brassica rapa. Common turnips. 



There are also a number of hybrids between turnips and ruta- 

 bagas, known as hybrid turnips. 



Cabbage, kale, rape, rutabagas, and turnips are all grown for 

 stock feed. 



Comparison of Beets and Turnips. Beets in general thrive 



FIG. 195. Rutabaga or Swede turnips. 



under rather high summer temperatures, while the cabbage-turnip 

 group require rather cool weather. Beets are sensitive to frost, while 

 turnips all endure heavy frost, and some members of the group, as 

 kale and collar ds, endure light freezing. Beets contain more sugar 

 than turnips. Turnips are harder in texture, and keep longer in 

 storage. Turnips in general do relatively better on light or poor 

 soils than beets. 



Culture. Rutabagas and large turnips are sown in early sum- 

 mer, but the early flat turnips may be sown as late as August first, 

 in the northern States. Turnips make their best growth during the 



