EXPERIMENTS WITH KHERSON AND SIXTY-DAY OATS. 



61 



water supply the period of plant growth is lengthened somewhat. 

 As the oat plant requires large quantities of water for its best develop- 

 ment, high yields of grain of excellent quahty usually are produced 

 in irrigated districts. 



Table XLIX. — Altitude, average annual and seasonal precipitation, mean seasonal 

 temperatures, and general soil types at five eooperiment stations in the northern Great 

 Plains and western basin areas. 





Alti- 

 tude. 



ClLmatological data. 





Station. 



Length 

 record. 



Average 

 precipitation. 



Meati temperature (°F.). 



General soil type. 





Annual. 



Season- 

 al.i 



June. 



July. 



Aug. 





Newell, S.Dak 



Bozeman, Mont 



Feet. 

 2, 950 

 4,700 

 4, 400 



3,600 

 4,532 



Years. 



9 



35 



6 



7 

 22 



Inchen. 

 13.93 

 18.60 

 9.80 



9.20 



8.65 



Inches. 

 9.20 

 10.97 

 4.84 



2.92 

 2.15 



65.0 



2 58.7 



72.0 

 = 65.8 



69.0 

 2 64.3 



Sandy loam. 



Sandy clay loam, lava 



ash. 

 Medium clay loam. 



Gooding, Idaho 



62.3 

 62.4 



70.1 

 69.8 



68.5 

 69.2 







1 April to August, inclusive. 



2 Twenty-nine year average. 



Results under Irrigation in South Dakota. 



The Sixty-Day oat has been included in varietal experiments con- 

 ducted under irrigation at JSTewell since 1912. The annual and aver- 

 age yields of the Sixty-Day and of three other varieties which have been 

 grown during the 6-y^ar period from 1912 to 1917, inclusive, to- 

 gether with the yields of one variety grown during three years, are 

 given ill Table L. 



Table L. — Annual and average yields of the Sixty-Day and four other varieties of oats 

 grown under irrigation at the Belle Fourche Experiment Farm, Newell,-S. Dak., during 

 three or more years in the 6-year period from 1912 to 1917, inclusive. 



[Data olstained in cooperation with the Office of Western Irrigation Agriculture and since 1912 with the 

 South Dakota Agricultural Experiment Station.] 





C. I. 

 No. 



Yield per acre (bushels). 



Group and variety. 



1912 



1913 



1914 



1915 



1916 



1917 



-'-verage. 





1912 

 to 

 1917 



1914 

 to 

 1917 



Early yellow: 



Si.xty-Day 



165 



134 



444 

 778 



551 



2.5.0 



3.5.2 

 31.2 



47.1 



33.0 

 39.3 



32.5 



41.6 

 42.4 

 50.7 



48.6 



34.0 



46.5 



44.7 

 51.8 



52.8 



28.8 



36.9 

 25.2 

 37.4 



42.1 



51.5 



54.6 

 65.8 

 57.8 



56.2 



36.5 



41.3 

 41.4 



4.5.8 



36.7 



Midseason white: 



Swedish Select 



44 9 





44.5 



Unnamed i 



49.4 



Late white (side): 



White Russian 



41.4 



33.7 



49.9 







1 Similar to Swedish Select; original seed supposed to have been obtained from Norway. 



