SORGHUMS FOR DRY-FARMING 245 



in the United States for over lialf a century, but it 

 was only when dry-farming began to develop so tre- 

 mendously that the drouth-resisting power of the 

 sorghums was recalled. According to Ball, the sor- 

 ghums fall into the following classes : — 



THE SORGHUMS 



1. Broom corns 



2. Sorgas or sweet sorghums 



3. Kafirs 



4. Durras 



The broom corns are grown only for their brush, and 

 are not considered in dry-farming; the sorgas for 

 forage and sirups, and are especially adapted for irri- 

 gation or humid conditions, though they are said to 

 endure dry-farm conditions better than corn. The 

 Kafirs are dry-farm crops and are grown for grain 

 and forage. This group includes Red Kafir, Wliite 

 Kafir, Black-hulled White Kafir, and ^Vhite Milo, all 

 of which are valuable for di'y-farming. The Durras 

 are grown almost exclusively for seed and include 

 Jerusalem corn, Brown Durra, and Milo. The work 

 of Ball has made Milo one of the most important dry- 

 farm crops. As improved, the crop is from four to 

 four and a half feet high, with mostly erect heads, 

 carrying a large quantity of seeds. Milo is already 

 a staple crop in parts of Texas, Oklahoma, Kansas, 

 and New Mexico. It has further been shown to be 



