36 
BULLETIX 
the Arkansas Valley (fig. 18). This means turning the water into the 
field immediately after planting. On some farms, however, it is the 
practice to irrigate the land in the autumn (fig. 19). 
Fig. IS.— Showing irrigation water in rows that were made smooth and even with the aid of a sled. 
Fig. 19. — Irrigating sugar-beet land in the autumn. The moistened soil responds more readily to the 
action of frost than dry soil. 
The available supply of water in this region depends largely upon 
the water stored in reservoirs for irrigating sugar beets. Ordi- 
narilv the rivers do not carry much water that can be utilized for 
