28 



BULLETII^ 103E>, U. S. DEPAETMEISTT OF AGRICULTUEE. 



VARIETAL EXPERIMENTS. 



During the 12-year period from 1908 to 1919, inclusive, 19 varie- 

 ties and strains of spring oats have been grown in plats. It was 

 soon found that onl}^ the early varieties were well adapted to the 

 region, but a few midseason and late varieties were continued in the 

 experiments for comparison. Only three varieties of oats were grown 

 during all of the 12 years. Several early varieties and strains were 

 added to the experiment in 1910, 1912, and 1916. The annual and 

 average yields of the oat varieties are shown in Table XVIII. 



Table XVIII. — Yields of oat varieties groirn on dry land on the Belle Fonrcltr 

 Experiment Farm, 1908 to 1919, inclusive. 





CI. 

 No. 



Yields per acre (bushels). 



Group and variety. 



1908 



1909 



1910 



1911 



1912 



1913 



1914 



1915 



1916 



1917 



1918 



1919 



Average. 





1908 

 to 

 1919 



1912 

 to 

 1919 



1916 

 to 

 1919 



Early yellow:" 



Kherson 



459 

 165 

 625 

 626 



les- 

 see 



165- 

 562 

 729 

 787 

 337 

 841 



293 



658 

 444 

 441 



47.5 

 46.6 



2.5.7 

 25.0 



1.5.0 

 1.5.6 

 14.4 

 16.6 





 

 

 



6.2 

 6.6 

 7.9 

 9.9 

 7.1 



6.2 



21.9 

 22.7 

 21.6 

 24.6 

 23.3 



1.3.8 



i.3.'4 

 14.2 

 12.2 



110.8 

 113.7 

 107.2 

 117.1 

 106.7 



40.8 

 .37.4 



33.8 

 34.1 



37.8 

 39.8 



4.4 

 5.5 



29.7 



33.7 



•xi ?. 



Sixty-Day . . 



^q ■? 



Sixty-Day selection 





Do 







43.4 

 41.8 



35.9 

 .33.8 



39.8 

 34.9 



4.2 

 4.0 







36.1 

 33.0 



30 8 



Do 







'>H 6 



Do 





Albion (Iowa No. 103) 















35.6 

 33.5 



30.6 

 30.6 



40.6 

 39.3 



3.9 



5 







97 7 



Richland (Iowa No. 105) . . 



1 



















n 1 



Seventy-five Day 



::;:::: 







7.5 



21.0 



12.8 



102.5 











Nebraska No. 21 

















4.4 

 5.7 









Early Red: 



Burt 











6.0 

 14 1 



22.4 



19.5 

 18.5 



16.0 





 



108.0 



.38.0 



.37.4 



36.4 





33.7 



?Q 4 



Midseason white: 



Big Four 



38." 8 

 36.1 



32.0 

 21.3 



3.6 



4.4 









Canadian 



10.4 



92.9 





































Great Dane 



26.6 

 28.4 



17.5 

 20.0 

 22.8 





























Swedish Select 



134 



342 

 551 



.38.1 



19.4 

 30 q 



2.3 





 

 









 

 



9.2 



15.2 







113.7 



33.0 



19.7 



34.6 



2. 3!24. 7 



28. 5 22. 4 



Late white (side): 



Yellow Giant 



1 





22.7 



14.3 







106.1 



26.8 



6.4 



46.6 



i.7'23.6 



28. 1 20. 4 



White Tartarian 



300 30. 

















1"'"' 







■■■T"T" :" 



" The Sixty-Day selections, and also Albion 

 have white kernels, while the parent varieties 



and Nebraska No. 21, which are selections from Kherson, 

 usually ha\-e yellow kernels. 



Table XVIII shows that good yields of oats were obtained from 

 all early varieties in 1908, 1915, 1916, 1917, and 1918. Fair yields 

 were grown in 1909 and 1913, and poor yields or failures in the 

 other years. In 1909, 1912, and 1918, the midseason and late varieties 

 were somewhat favored by ample moisture late in the season. In 

 years such as 1910, 1914, 1917, and 1919, when the season was very 

 dry, the early varieties yielded better than the later ones. The 

 Kherson variety, C. I. No. 459, gave the highest average yield, 29.7 

 bushels per acre, during the 12-year period. A panicle and spikelets 

 of Kherson oats are shown in figure 9. The Swedish Select and 



