Vegetables with Edible Tubers or Roots 283 



HORSE-RADISH 



Horse-radish has been grown in the cool season or at an 

 elevation in tropical lands. It has not been grown to a 

 large extent in the southern United States. It requires a 

 deep, rich, sandy soil, and is usually planted as a by-crop. 

 It is worthy of a test in each locality, but no one should 

 invest in this crop without knowing that it will succeed. 



The soil should be prepared as for cabbage. The sets will 

 be found to be small straight roots, about \ inch in diameter 

 and 6 inches long. The rows should be made about 2 feet 

 apart and the sets planted 18 inches in the row. A deep 

 hole should be made with a dibber, or other suitable 

 implement, and the set dropped in it in an upright posi- 

 tion. The crown of the set should go from 2 to 4 inches 

 below the surface of the soil. The cultivation need not be 

 frequent, but had best be deep. 



The roots are the only marketable parts ; these should 

 be removed from the soil, washed, and trimmed. They 

 will remain in a marketable condition for several weeks 

 after digging, and may be shipped as freight. 



CASSAVA 



There are two classes of varieties of this tropical Ameri- 

 can plant, the bitter and the sweet. Only the sweet 

 varieties seem to be cultivated in Florida and Colombia. 

 In Florida a considerable area was grown during the late 

 nineties for the production of starch, and two large factories 

 were established for preparing the starch for market. 

 In the West Indies and Brazil, both kinds are grown. It 



