54 



BULLETIN 823, U. S. DEPARTMENT OF AGRICULTURE. 



The altitude of Nephi, Utah (6,000 feet), is the highest of the 

 stations here discussed, and that of Chico, Calif, (189 feet), is the 

 lowest. Aberdeen and Burns each have an altitude of more than 

 4,000 feet. At the Burns station in the Harney Valley frost fre- 

 quently occurs during the summer months. The advantage of early 

 varieties of oats over midseason or late varieties is apparent under 

 such conditions. The summers are very warm and evaporation is 

 fairly high, but wind velocities are low in most of these sections. The 

 soils for the most part vary from sandy clay to silt loams. 



Results in Utah.i 



The Sixty-Day oat has been included in the cooperative varietal 

 experiments at Nephi since the work was started at that station in 

 1908. The Kherson variety was grown only during the years 1909 to 

 1911, inclusive. Two selections of Kherson from the Iowa station 

 were added to the experiments in 1916. In addition to these, only a 

 few other varieties have been included in the tests at Nephi. The 

 annual and average yields of those varieties which have been grown 

 during three or more years in the 10-year period from 1908 to 1917, 

 inclusive, are presented in Table XLII. 



Table XLII. — Annual and average yields of the Sixty-Day, the Kherson, the Richland, 

 the Albion, and four other varieties of oats grown at the Nephi ( Utah) substation during 

 two or more years in the 10-year period from 1908 to 1917, inclusive. 



[Data obtained in cooperation with the Utah Agricultural Experiment Station.] 





C.I. 



No. 



Yield per acre (bushels). 



Group and variety. 



1908 



1909 



1910 



1911 



1912 



1913 



1914 



1915 



1916 



1917 



Average. 





1908 

 to 

 1917 



1910 

 to 

 1917 



1916 

 and 

 1917 



Early yellow: 



Sixty-Day 



165 

 459 

 729 



787 



568 



134 

 752 



549 



480 



16.0 



15.0 

 16.6 



02.8 

 0.6 



2.8 

 5.9 



15.3 



6.3 



30.6 



36.1 



10.6 



19.4 



15.5 



15.5 



15 



TThprsrin 





Albion (Iowa No. 103, white) 











15.6 

 16.6 



21.7 

 20.0 







18 7 



Richland (Iowa No. 105) 























18 3 



Midseason yellow: 



Giant Yellow (side) 



9.7 



344.1 



16.3 

 215.4 



6.9 



46.2 

 10.9 



8.4 



5.3 



12.2 



8 8 



21.4 



19 S 



22.5 



30.7 

 35.0 



29.4 



844.4 



31.3 



539.1 

 30.3 



542.5 



6 56.9 









Midseason white: 



Swedish Select 



1 

 9A 1 1.^ 1 



615.8 

 15.9 



S16.9 



9.7 



5 8.6 

 2.8 



514.7 



20.0 



20.6 

 19.4 



18.3 

 18.1 



90 3 



19 9 



Roosevelt 



611.52fi.fi11.fi 



9 4 



Midseason black: 



Black American 



15.6 



15.6 

 16.0 



11.6 

 38.1 



25.313.5 

 11.1 C^ 



15 8 



Winter: 



Boswell (black) 



.J23.2 



14 9 























1 Data obtained cooperatively by the Utah Agricultural Experiment Station and the Bureau of Plant 

 Industry. The data previous to 1917 have been reported in the following publications: U. S. Department 

 of Agriculture Bulletin 30 (8); U. S. Department of Agriculture Farmers' Bulletin 883 (20); and Utah 

 Agricultural Experimental Station Circular 21 (16). 



2 Average yield of five plats. 



3 Grown on land which has been fallow for two years. All the other varieties were grown in 1908 on 

 plats which had produced wheat the previous season. 



* Average yield of four plats. 



6 Yield of selection, original stocks not grown. 



6 Average yield of three plats. 



' Completely winterkilled. 



8 From 6-peck rate in rate-of-seeding test. 



