67 



would bo coinparativoly lio'ht, probably not over 9 inches, or 30 inches 

 for the .season. The results at all these places in 1900 are given 

 below. 



SiDtuiiary of results of the diUi/ of water experiments on field crops made in 1900. 



Crop. 



Area irri- 

 gated. 



Yield per acre. 



Depth 

 applied. 



Clover 1 . 

 Barlev" . 

 Oats".... 

 Wheat a . 

 Clover a . 



Oatsa 



Peas f I 



Barley" . 



Cats" 



Barley a . 

 Clover" . 



Do... 

 Alfalfa 6. 

 Orchard c 

 Oatsc 



Do... 



Acres. 

 66.39 

 4.14 

 2b. 09 



2.00 



2.00 



1.00 



8.51 



4.52 



7.26 



35.90 



53.41 



40.00 



161.70 



102. 20 



48.50 bushels 



i 38.33 buslVels 

 13,170 pounds. 

 (75.r)S liiisbels 

 tl.aSO pounds. 

 87.'J'J bushel.s 

 74.67 bushels 

 68.58 bushel.s 

 5 tons 



5.17 tons 



33 bushels . . . 

 31 bushels ... 



Feet. 

 1.98 

 1.50 

 .84 



.57 



1.17 

 1.27 

 1.96 

 2.70 

 1.78 

 1.30 

 1.48 

 1.28 

 6.00 



n Gallatin County. b Yellowstone County. <-• Ravalli County. 



MEASUREMENTS MADE IN 1901. 



The investigations of 1901 were a continuation of those conducted 

 in former years." The crops of Gallatin County were six clover tiekls, 

 seven grain fields, and one sugar-l)eet tield. The clover crops were 

 irrig-ated from one to three times and the average quantity of water 

 applied during the season was ll.a inches. To this should be added 

 the rainfall, which averaged 7.2 inches, making a total of 21.7 inches. 

 The amounts applied to seven grain crops were a trifle less than 12 

 inches of irrigation water and nearl}" 6 inches of rain water, or 18 

 inches in all. The sugar beets were irrigated three times and received 

 24.6 inches in both irrigation and rain water. 



The same three fields in Ravalli County on which water w^as meas- 

 ured in 1900 were tested in 1901. The 40-acre tract of 6-year-old 

 orchard trees was again watered four times and the average depth of 

 water used in irrigation was 18.7 inches, while the rainfall was 5.9 

 inches, a total of 24.6 inches. The second tield produced 150 tons of 

 clover hay with the use of 18 inches of irrigation water and 6 inches 

 of rainfall; and the third field, on which so much water had been 

 applied the year previous, produced 103 tons of clover hay with the 

 use of 5.5 inches of rainfall and 26.5 inches of ditch water. 



aU. S. Dept. Agr., Office of Experiment Stations Bui. 119, pp. 225-241. 



