20 



Journal of Agricultural Research 



Vol. Ill, No. I 



Table XIII. — Water requirement of different varieties of corn and teosinte at Akron, 

 Colo., in igi2 and IQIJ — Continued 



SORGHUM 



The investigation of the water requirement of the sorghums (Table 

 XIV) is of special interest, owing to the marked efficiency exhibited by 

 this group of plants in the use of water. The eight varieties grown at 

 Akron in 191 2, together with the water requirement based on the pro- 

 duction of dry matter, follow: 



Variety of sorghum Water requirement 



Brown kaoliang 223 ± i 



Red Amber 237 ±4 



Minnesota Amber 239±2 



Milo 249±3 



White durra 255 ±3 



Blackhull kafir 259±5 



Dwarf milo 273±4 



Sudan grass 359±2 



