﻿20 



BULLETIN 10, U. S, DEPARTMENT OF AGRICULTURE. 



As long as the size of the beets permitted, thorough cultivation fol- 

 lowed each irrigation, and all plats were kept free from weeds. 

 Following are the dates of irrigation and the amounts of water 



applied: 



Schedule of irrigation of sugar beets in 1912. 



Time of seeding. 



Number 

 of plat. 



Number of irrigations. 



Date. 



Depth 

 applied. 





I ! 



r i 



1 2 



1 3 



4 



fNone 





Inches. 





One..... 



May 21 

 /May 21 

 \Jurie 21 



10.5 





[two 



9.2 





fNone 



4.4 





One 



May 24 

 /May 26 

 \June 21 

 [May 24 

 Wune 21 

 lJuly 17 



6 12 





Two 



6.12 





Three 



5.40 

 6.12 

 5.40 



5.28 







All plats were harvested the last of August, being plowed, topped, 

 and sold in the field. At this time average samples were taken from 

 each plat and tests made for sugar percentage and purity. 





Seeded marchI 



Seeded March 27 



Water Applied,- inches 







. 10.5 



149 



O 



6.12 



11.52 



. 17.80 



18 

 16 



uj 14 



a. 

 o 



<I2 



q: 

 hi 



a IO 

 m 



l& 



z 



_l 

 id 



2 





























• 















































































«0 



(0 







.0 









1 







? 



I 









>> 



j: 



>> 



<0 







-v. 





^s 







Fig. 7. — Yield of sugar beets, seeded at two periods and irrigated with different quantities 



of water. 



The table following shows the results in yield, sugar percentages, 

 purity, and net returns per acre. These results are illustrated in 

 figure 7, the yields and corresponding amounts of water applied 

 being shown. 



