DRY-FARMING 



against Kaffir corn than against the sac- 

 charine sorghums." 



Classification of Sorghums. 



There are a great many varieties of 

 Sorghums. They hybridize or cross very 

 readily and the number of different sorts 

 seem to be constantly increasing. All 

 forms, however, grown in the United 

 States may be separated into four classes 

 or groups: (1) Broom Corns. (2) Sor- 

 gos. Saccharine or Sweet Sorghums. 

 (3) Kaffir corns. (4) Durras. 



Of these the broom corns are grown 

 only for their brush, the sorgos for for- 

 age and syrup, the Kaffir corns for grain 

 and forage, and the durras almost ex- 

 clusively for grain. 



Broom Corns. 



The broom corns have straight stems 

 which do not branch from the upper 

 234 



