CULTURAL DIRECTIONS 



301 



each head will help to accomplish this purpose. Such a 

 plan is particularly desirable when prices are high. 



393. Returns. Returns are extremely variable, rang- 

 ing from $100 to $1,000 or even more an acre, $400 an 

 acre being a highly satisfactory return. 



394. Insects and diseases. The same as of cabbage. 

 See paragraphs 363, 364, 365, 366, 367 and 368. 



FIG. 75. CAULIFLOWER PACKED FOR MARKET 



CELERIAC OR TURNIP-ROOTED CELERY (Apium 

 graveolens, var. rapaceum). 



395. Culture. This umbelliferous plant belongs to 

 the celery species. The root is the edible part. It is 

 used for flavoring, as a salad and for cooking, like other 

 root crops. The roots vary in size from 2 to 4 inches. 

 They may be stored during the winter under the same 

 conditions as beets or turnips. This vegetable is of 



