



5 

 =Q 



i 



!- 

 $: 



I 



L 

 L 



SUGAR BEETS, POTATOES, ETC. 



Potatoes 



309 



III! I 



FIG. 84. Yield vs. water (potatoes). 



parsley are crops that feed near the surface and require 

 rather small frequent irrigations. The total quantity of 

 water required by these crops is small. 



186. Asparagus and celery. These are important 

 and valuable irrigated crops. Asparagus needs water 

 chiefly during the cutting season, after which watering 



