﻿IRRIGATION AT UNIVERSITY FARM, DAVIS, CAL. 



13 



Were further conclusions to be drawn each season should be con- 

 sidered separately, but in each case inspection of the value column 

 will show that for each of these three seasons irrigation of grain was 

 made to pay. 



IRRIGATION EXPERIMENTS WITH INDIAN AND EGYPTIAN CORN IN 



1910 AND 1911. 



For this work, which, extended through 1010 and 1011, the 4-acre 

 tract lying directly north of the west end of check 37 was used. 

 During 1000 this tract Avas in sugar beets, and previous to that for a 

 number of years it had been in grain. 



In the spring of 1010 it was plowed twice — March 1 and April — 

 harrowed, and cross-harrowed. On April 20 the west 2 acres were 

 seeded to Yellow Dent Indian corn and the east half to Egyptian 

 corn (white durra), a sorghum. In seeding a corn planter was used 

 and the rows 'were placed 40 inches apart. 



During the season of 1010 no definite time for irrigation was set 

 or definite quantities assigned, both being controlled by the needs and 

 conditions of the growing crops. 



INDIAN CORN. 



Immediately after planting the field was divided into four plats, 

 the water being applied as shown in the following schedule: 



Schedule of irrigation of Indian com, 1910. 



Number of plat. 



Number of irrigations. 



Date. 



Depth 

 applied. 



1 







Inches. 



2... 



One 



June 24 



/..do 



Uuly 13 

 (May 26 

 •J June 24 

 [July 13 



3.3 



3 



Two 



Three 



3.3 



4 



2.0 



4.4 

 2.1 







1.5 



Thorough cultivation followed each of these irrigations, and at all 

 times the field was kept free from weeds. In the middle of August, 

 when the corn was in the milk, it was cut, weighed, and fed green. 



After the crop was removed the land was fall plowed, harrowed, 

 and allowed to stand idle through the winter. The following March 

 it was again plowed, harrowed, and seeded to " Yellow Flint " corn 

 and the experiment of 1010 repeated. The area was divided into 

 four plats, which received the following amounts of water during 

 the growing season. 



