EIGHTH ANNUAL YEAR BOOK— PART X. 



623 



The relative merits of the oats we have been growing for the last 

 three years is well set forth in the following chart showing the average 

 yield for the last five, four and three years respectively: 



AVERAGE YIELD OF OATS FOR FIVE, FOUR AND THREE YEARS AT AMES. 



Five Year9-1903-1907 



Variety 



«=* 



:oa 



Four Years— 1904-1907 



Variety 



Three Years— 1905-1907 



Variety 



^s 





Kherson 



Silvermine -- 



Joanette 



W. Alaska - 



Early Champ 

 Siberian 



Kherson 



Silvermine 



Wis. No. 4 



W. Russian _- 

 Minn. No. 36. 



National 



.Toanette 



W. Alaska 



Minn. No. 6 



Irish Victor .. 

 Early Champ 

 Siberian 



32.4 

 55.8 

 52.1 

 50.9 

 50.9 

 19.8 

 49.8 

 49.7 

 48.6 



47.5 

 4S.8 

 42.5 



Tartar King 



Silvermine 



Kherson 



Wis. No. 4 



W. Russian 



National 



Minn. No. 26 



.Toanete 



Irish Victor 



Minn. No. 6 



W. Alaska 



60 Day 



Siberian 



Early Champ. 



Russ. (Brnner) 



Tartar King 



Danish 



White Tartar 



Canadian 



Sparrowbill 



Dun 



29J 

 30i 

 31J 



281 

 301 

 27i 

 29i 



2ri 



2S\ 



32J 



30 



273 



3IJ 



27 



28] 



26 



27 



30J 



23 



26 



The average yield of oats for the state during the period of time 

 shown in the chart above has been: 



For 5 years, 1903-1907 inclusive 29.6 bu. 



For 4 years, 1904-1907 inclusive 30.4 bu. 



For 3 years, 1905-1907 inclusive 30.7bu. 



The average yield of all varieties at the Experiment Station for 

 three years, 1905-1907 inclusive, has been 47.7 bushels. This includes 

 20 varieties, ranging from 62.5 to 26.2 bushels per acre. 



From these figures it may be seen that, after considering all other 

 factors that influence yield, the general use of a superior variety of 

 oats would add from eight to ten bushels to every acre grown. 



