254 Feeds and Feeding. 



from Southern corn, which likewise leads in dry matter and total 

 digestible substance, although percentagely lower in digestibility, 

 as shown by Jordan. 



398. When to use Southern corn for silage. From the table it 

 appears that we are assured of larger returns of total dry and 

 digestible matter at the North by the use of large Southern varie- 

 ties of corn. Southern corn should not be grown for either silo 

 or forage purposes, however, unless the climatic conditions per- 

 mit the ears to develop grains of corn which reach the glazing stage 

 at time of harvest. This variety of corn will prove a favorite for 

 both silage and dry forage where there is an urgent demand for 

 the largest possible amount of coarse, palatable forage from a 

 given acreage. By the use of Southern varieties of seed corn at 

 the North the stockman can provide an enormous quantity of 

 roughage from a given area. 



On the other hand the stockman who has a fair supply of hay, 

 straw or stover at command will fill his silo with a richer feed- 

 ing stuff than that produced by Southern corn, and for this pur- 

 pose will use varieties of flint or dent corn which will fully 

 mature in his locality, planting the crop in such manner as to 

 secure a relatively large proportion of grain to roughage. Silage 

 made from the smaller varieties of corn, carrying a considerable 

 proportion of ears, will prove a rich feeding stuff which will 

 materially reduce the necessity for additional grain. Corn silage, 

 which is rich in carbohydrates, should be supplemented by clover 

 hay, if possible, not only because some dry food is required, but 

 because this hay is rich in protein. 



399. Space occupied by silage and dry fodder. A cubic foot of 

 hay in the mow weighs about five pounds. According to King 1 

 a cubic foot of corn silage in a thirty-foot silo weighs 30.6 pounds. 

 Estimating that hay contains 13.2 per cent, and silage 79.1 per 

 cent, of water, we have the following: 



One cubic foot of hay in the mow contains 4.34 Ibs. dry matter. 



One cubic foot of silage in a thirty-foot silo contains 8.28 Ibs. dry matter. 



We learn that a given volume of silage contains nearly twice as 

 much dry matter as the same volume of hay stored in the mow. 

 1 Bui. 59, Wis. Sta. 



