CULTURE 455 



Brassica olemcece. 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 collards, endure light freezing. Beets contain sugar, but 

 there is none in 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 



