Varieties of Roots. 



141 



present to a considerable extent in freslily harvested roots and that they 

 tend to disappear in storage. 



Few British farmers feed mangels whole, except occasionally to horses 

 and hogs. For sheep they are cut up into finger pieces, like French fried 

 potatoes, or sliced. They are sometimes prepared in this manner for cattle 

 but are more often pulped, that is grated down to irregular shaped pieces 

 of about five-eighths to three-fourths of an inch in diameter. This is fre- 

 quently done twelve hours before they are required for feeding and during 

 this time they are left mixed with chaffed hay or straw cut about two 

 inches long, and left 

 to heat. In making the 

 pile, a layer of chaffed 

 hay or straw is laid on 

 the floor, then some 

 mangels, then chaffed 

 hay or straw and so 

 on. In twelve hours 

 the mass has become 

 warm, the meal and 

 ground grain or what- 

 ever concentrate is be- 

 ing used is mixed uni- 

 formly through the 

 mass and it is then fed. 

 No more is mixed than 

 will be required at the 

 time. 



In some cases 

 known to the writers, 



Fig. 52. — Aberdeen yellow hybrid turnip, 

 yielder with solid -flesh. 



A good 



mangels grown on 

 sewage-irrigated farms have developed an unfavorable fermentation 

 if handled in the above way; the best way to handle such is to pulp 

 them a few minutes prior to their being fed. 



The same general remarks apply to sugar-beets and half-sugars. See 



table, p. 129, for yields. 



' r ' ■ 

 Rotation of crops as a check to leaf-spot: 



In 1904 some interesting differences were observed in regard to the 

 susceptibility of mangels and sugar-beets to leaf-spot when grown continu- 

 ously on the same land for four years and when grown in a rotation with 

 other crops. The observations were made on sections i, 4, 7 and 10 which 

 were sown to mangels May 6 and 7. As section 10 was not so large as 

 the other three it is discarded for the present. (See Bui. 243.) 



