26 



BULLETIN" Xiy U. S. DEPARTMENT OF AGRICULTURE: 



Table XI show* that the average actual yield per acre of all 

 varieties of oats grown in 1907 was 53.6 bushels; in 1908, 39.5 

 bushels; in 1909, 75.8 bushels; in 1910, 40.5 bushels; in 1911, 10.8 

 bushels; in 1912, 56.1 bushels; and in 1913, 57.9 bushels. The aver- 

 age of these averages for the seven years was 47.7 bushels. The 

 variations in the average yields for the different years, due to the 

 physical conditions, are about in the same proportion as were those 

 in the average yields of the spring-wheat varieties. The cultural 

 methods used were practically the same. 



Table XII. — Computed (annual and average) yields of 26 varieties of oats at 

 the Dickinson substation, 1909 to 1913, inclusive, 1 compared with the average 

 actual yield for the same years. 





Variety. 



Yield per acre (bushels). 



C.I. 



No. 



1909 



1911 



1912 



1913 



Average. 





Com- 

 puted. 



Actual. 



134 



Swedish Select 



81.3 

 87.9 



9.8 

 8.2 

 23.1 

 16.4 

 11.2 

 13.3 

 7.6 

 6.9 



52.3 

 63.1 

 45.4 

 55.3 

 62.2 



68.7 

 47.8 

 47.8 

 52.7 

 69.7 

 53.5 



53 

 51.8 



38.8 

 51.3 



57.4 

 49.2 

 48.1 

 43.8 



50.3 



160 





52.2 



165 





35.7 



459 





80.7 



86.3 



80.9 



88.5 



80.6 



77 



73.6 



79.2 



80 



71.8 



76.2 



70.5 



81.6 



82.6 



75.6 



56.6 



79.7 



75 



87.3 



84.2 



75.6 



63.9 



48.5 



493 





58 



551 





44 



754 





46.9 



386 









41.3 



492 











344 











354 

 366 

 368 

 376 

 378 















l 









1 

















-:- | 





445 











483 













491 













496 



Black Hell 











497 













495 















560 





3.1 

 12.3 



60.3 

 59.6 



71.3 

 63.9 



55.5 

 55 



56.8 



658 





54.6 



552 







659 





7.6 

 19 

 11.3 



53.9 

 56.3 



58.7 



70.4 

 55.5 

 67.3 



49 



43.6 



45.8 



48.7 



170 





38.9 



656 







45.7 











1 The check plats of the 1910 crop were destroyed by hail; therefore no computed yields are given for that 

 year. 



SUMMARY OE OAT YIELDS. 



The actual and computed annual and average yields of the leading 

 varieties of each group of oats are given in Table XIII. Four 

 groups of oats — medium early, medium late, early, and late — are 

 represented, ranking in yield in the order named. The average 

 actual yield for the seven years from 1907 to 1913 for the two leading 

 medium-early varieties is 12.5 per cent greater than the average 

 actual yield of the two leading early varieties. For the five years 

 1908, 1909, and 1911 to 1913, the average actual yield of the leading 

 medium-early variety is 13 per cent greater than that of the medium- 

 late variety, 17 per cent greater than that of the leading early 



