482 



Journal of Agricultural Research 



Vol. VI, No. 13 



XablE VI. — Water requirement of Dwarf Blackhull kafir, feterita, and Sudan grass at 



Garden City, Kans., in IQIS 



Dwarf Blackhull kafir was grown only in 191 5. The growing season 

 for these plants was from May 22 to September 11. The water require- 

 ment, based on the total dry matter, including the roots, was 207 ±2, 

 and based on the total dry weight of the aerial portions, was 221 ±2. 

 The water requirement, based on the production of grain, was 5i9±8 

 (PI. LXXI, fig. 2). 



Feterita was grown in five cans in 191 5. The seed was planted on May 

 22 and the plants were harvested on September 6. The water require- 

 ment, based on the total dry matter of the aerial parts, was 249^2, 

 while the water requirement, based on the seed production was 785 ±24 

 (PI. LXXI, fig. 3). 



Three cans were planted to Sudan grass in 1915. These plants reached 

 a height of 6 feet during the growing period from May 22 to September 

 14 (PI. LXXI I, fig. i). The water requirement, based on the dry weight 

 of the aerial parts, was 306 ±15 and, based on the production of grain, 

 was 1 598 ±76. 



