20 



BULLETIN" 214, U. S. DEPARTMENT OF AGRICULTURE. 



Table IX. — Yields and cost of production of spring wheat by different methods at the 

 , Edgeley Field Station, 1907 to 1914, inclusive. 



Treatment and previous 



Number 

 of plats 

 averaged. 









Yield per acre 



(bushels). 







crop. 



1907 



1908 



1909 



1910 



1911 



1912 



1913 



1914 



Average. 



Fall plowed: 



1 

 2 



1 



12.6 

 9.5 

 7.0 



20.8 

 13.0 

 15.3 



32.5 

 27.6 

 23.3 



• 6.3 

 4.7 

 5.2 



1.5 



1.0 



.5 



36.7 

 30.3 

 27.0 



23.0 

 15.9 



12.1 



16.8 



17.1 



9.2 



18.8 



Oats 



14.9 



Wheat 



12.5 







Total or average. . . 



4 



9.7 



15.5 



27.7 



5.2 



1.0 



31.1 



16.7 



15.1 



15.3 



Spring plowed: 



2 

 1 

 1 



a 13. 2 



4.2 

 4.1 



a 15. 8 

 13.5 

 13.3 



28.0 

 25.8 

 2S.3 



4.7 

 3.8 

 4.0 



.8 

 .2 

 .7 



35.5 

 31.3 

 35.0 



22.7 

 20.6 

 16.3 



16.7 

 17.5 

 11.3 



17.2 



Oats 



14.6 



Wheat 



14.1 







Total or average . . 



4 



7.2 



14.2 



27.5 



4.3 



.6 



34.3 



20.6 



15.5 



15.5 





12 



6 13.4 



C18.1 



27.8 



5.7 



2.6 



33.6 



23.6 



17.0 



17.7 







Green manured: 



Rye 



1 

 1 

 1 



10.5 

 10.2 



19.8 

 18.2 

 11.7 



30.5 

 28.6 

 23.1 



2.6 

 6.3 

 3.6 



.3 



. 2 

 .2 



36.7 

 37.5 

 34.2 



21.8 

 22.1 



24.5 



12.8 

 20.3 

 14.3 



16.9 





17.9 



Sweet clover 



15.9 



Total or average. . . 



3 



dl0.4 



16.6 



27.4 



4.2 



.2 



36.1 



22.8 



15.8 



16.7 





5 



dl0.9 



15.8 



27.5 



8.0 



3.2 



35.4 



26.1 



16.0 



17.9 











el0.6 



/16.6 



27.6 



5.7 



1.9 



33.9 



22.5 



16.2 



16.9 









Summary of Yields and Digest of Cost. 





Tillage treatment. 



Previous crop. 



Yields, values, etc. (average 

















per acre). 



Fall 



Spring 



Disked 



Creen 



Summer 



Corn 



Small 





plowed 



plowed 



(12 



manured 



tilled 



(15 



gram 





(4 plats). 



(4 plats). 



plats). 



(3 plats). 



(5 plats). 



plats). 



(5 plats). 



Yields of grain: 

















1907 bushels.. 



9.7 



Ql. 2 



613.4 



10.4 



10.9 



M3.2 



6.9 



1908 do.... 



15.5 



314.2 



clS.l 



16.6 



15.8 



18.2 



13.6 



1909 do.... 



27.7 



27.5 



27.8 



27.4 



27.5 



28.1 



26.5 



1910 do.... 



5.2 



4.3 



5.7 



4.2 



8.0 



5.6 



4.5 



1011 do.... 



1.0 



.6 



2.6 



.2 



3.2 



2,3 



.7 



1912 do.... 



31.1 



34.3 



33.6 



36.1 



35.4 



i 34. 



30.8 



1913 do.... 



16.7 



20.6 



23.6 



22.8 



26.1 



23.4 



16.1 



1914 do.... 



15.1 



15.5 



17.0 



15.8 



16.0 



17.0 



14.4 





15.3 



15.5 



17.7 



16.7 



17.9 



17.7 



14.2 







Crop value, cost of production, 

















etc.: 



















$10. 71 

 6.56 



$10.85 

 6.09 



$12. 39 

 4.75 



$11. 69 

 14.61 



$12. 53 

 11.50 







Cost 















4.15 



4.76 



7.64 



- 2.92 



1.03 













a Yield of 1 plat. 

 6 Average of 5 plats, 

 c Average of 9 plats. 



d Average of 2 plats. 

 « Average of 18 plats. 

 / Average of 22 plats. 



g Average of 3 plats. 

 h Average of 7 plats. 

 i Average of 11 plats. 



This station presents for study the results of eight years. Five of 

 these have been years of good to heavy production. In one year the 

 production was light, in another it was very poor, while the remain- 

 ing year was one of practical failure of all methods under study. 



The wide differences in yield resulting from different methods of 

 preparation that were obtained at some stations during some years 





