﻿IRRIGATION AT UNIVERSITY FARM, DAVTft, CM.. 

 Summary of results of outs and wheat irrigation. 



19 



Crop. 



Number 

 of plat. 



Number of 

 irrigations. 



Depth. 



Yield per acre. 



Percent- 

 age of 

 grain. 



Grain 



value at 



$1.50 per 



100 pounds. 



Cost of 



Hay. 



Grain. 



tion 





[32 





Inches. 



Pounds. 

 1,380 

 4,900 

 5,820 

 1,730 

 3,920 

 6,300 



Pounds. 



435 

 1,420 

 2,040 



560 

 1,210 

 1,935 



Per cent. 

 31.8 

 28.0 

 35.1 

 32.4 

 30.9 

 30.8 



$6.53 

 21.30 

 30. 60 

 8.40 

 18.15 

 29.03 







One 



13.2 

 20.4 



$3 96 





|34 



i ;: 



134 



Two 



6.12 











Two 



10.0 

 18.4 



3.00 

 5.52 









Note.— Irrigation cost figured at 30 cents per acre-inch for power and attendance. 



With the oats the single irrigation of 13.2 inches increased the yield 

 225 per cent, giYing a gain in returns of $14.77 per acre, at a cost 

 of $3.96 per acre for irrigation. Two irrigations, totaling 20.4 inches, 

 increased the yield 370 per cent, with a gain of $24.07 per acre in 

 grain value, at a total cost of $6.12 per acre for water and attendance 

 during irrigation. 



Figuring on the same basis with the wheat, one irrigation of 10 

 inches increased the yield 116 per cent, with a gain in returns of $9.55 

 per acre, at a total increased cost of $3 per acre. Two irrigations 

 increased the yield 245 per cent, giving an increase in returns of 

 $20.63 per acre, at a total expense of $5.52 per acre. 



It will also be noted that in all cases the percentage of grain to 

 hay remains about the same, showing the grain production to increase 

 uniformly with the total weight of matter produced. 



No definite conclusions can be drawn from this one season's work. 

 A decided advantage, nevertheless, is shown in favor of irrigation. 

 All of the water was applied at a financial gain, and an idea is 

 obtained of what may be accomplished in years of light rainfall 

 when conditions are unfavorable to dry-land farming. 



SUGAR BEETS FOLLOWING ALFALFA. 



Following the early spring preparation of checks 1 to 15, the land 

 was replowed on February 22, then harrowed and cross-harrowed. 

 The area was divided into seven plats, 5, 6, and 7 to be seeded early, 

 and 1, 2, 3, and 4 seeded later. March 11 the first plats were seeded 

 in drills 20 inches apart, 15 pounds of Wankaka seed per acre being 

 used. March 27 the remaining checks were seeded in the same 

 manner. Spacing, thinning, and hoeing followed when the beets were 

 in the third and fourth leaf, and this was followed by a thorough 

 cultivation. 



The dates of irrigation depended upon the needs of the crop, and 

 sufficient water was added to give the soil a thorough wetting. The 

 furrow method of irrigation was practiced, the water being applied 

 in alternate spaces between the rows, and as nearly as possible the 

 water was confined to the furrows and kept away from the beets. 



