44 SOILING CROPS AND THE SILO. 



desirable to cultivate the crop. In sowing the seed 

 almost any make of drill may be used. In sowing 

 double rows two adjoining tubes are active, while 

 the tubes that occupy the space between the double 

 rows are inactive, that is to say, not in use. The 

 space between the rows that form the double row is 

 thus from six to eight or nine inches wide, according 

 to the make or pattern of the drill, and the distance 

 between the double rows will be determined by the 

 nature of the soil, the variety of the sorghum to be 

 grown and the character of growth expected from 

 it. The richer the soil, the more distant the rows 

 from one another ; the larger the variety of the sor- 

 ghum the coarser will be the character of the growth 

 produced. The chief objects sought in planting the 

 double in preference to the single row are : To secure 

 an increased yield in weight of fodder, and to secure 

 a crop fine in character. One objection to the sys- 

 tem is found in the shelter that is thus provided for 

 weeds between the two lines of the double row. 



Prominent among the varieties of sorghum that 

 are more commonly grown are the Early Amber, 

 sometimes called the Minnesota Amber, the Early 

 Orange, Folger's Early and Link's Hybrid. The 

 first named has marked adaptation for northern lati- 

 tudes. The second and third are much grown in 

 the states of the middle west, and the fourth is one 

 among several varieties grown in the south. 



The quantity of seed to be sown will depend 

 upon climatic conditions and upon the mode of plant- 

 ing. It is manifest the system, of sowing broadcast 

 will call for much more seed than the system of 

 planting sorghum in single or double rows. When 



