136 The Sweet Potato 



Of all the varieties of sweet potatoes given above 

 (and there are perhaps a hundred more subspecies), 

 only about a dozen are important from the market 

 standpoint. The Jersey type is generally preferred 

 on the northern markets, though some of the moist 

 fleshed kinds, especially the Nancy Hall, are being 

 rapidly introduced into markets where heretofore a 

 prejudice existed against southern potatoes. 



The southern markets demand the moist fleshed 

 variety or the so-called yam kinds. The Nancy Hall 

 and the Porto Eico are the most popular and widely 

 grown for the middle and late markets, while the 

 Triumph (a medium dry variety) is most popular for 

 the extra early market. 



When grown for stock-food only, the heaviest yield- 

 ing varieties such as the Yellow Strasburg, Red Ber- 

 muda, White Belmont and Hayman, should be used. 

 The contention of some growers that the high sugar- 

 content of some of the lesser yielding kinds will offset 

 the advantage of big yields in fattening stock has not 

 been found to hold true in practice. 



