16 



BULLETIN" 222, U. S. DEPARTMENT OF AGRICULTURE. 



Having at the same time the highest yield and the lowest cost of 

 production, disked corn ground shows much the highest profit of any 

 method under trial. The average profit from it was $10.68 per acre. 

 Both spring and fall plowing show profits of about $4 per acre. The 

 cost of summer tillage reduced the profits from it to SI. 93 per acre. 



Table VIII. 



Yields and cost of production of barley by different methods at the Dickinson 

 Field Station, 1908 to 1914, inclusive. 



Treatment and previous 



Number 



of 



plats 



averaged. 



Yield per acre (bushels). 



crop. 



1908 



1909 



1910 



1911 



1912 



1913 



1914 



Average. 





1 



24.0 



39.0 



31.1 



1.2 



CO 



34.8 



20.2 



25.1 



Spring plowed: 



1 

 1 



33.5 

 34.4 



39.8 

 49.2 



28.3 

 19.8 



9.6 

 2.4 



CO 



CO 



19.2 

 20.2 



25.0 

 13.3 



25 9 





23 2 







Total or average . . . 



2 



34.0 



44.5 



24.1 



6.0 





19.7 



19.2 



24.6 





1 

 1 



45.6 

 30.0 



53.8 

 50.0 



28.6 

 24.0 



12.3 

 19.1 



CO 



(0 



44.8 

 36.9 



39.1 

 ' 35.2 



37 4 





32 5 







Average of all 5 





33.5 



46.4 



26.4 



8.9 



(0 



31.2 



26.6 



28.8 









Summary of Yields and Digest of Cost. 





Tillage treatment. 



Previous crop. 



Yields, values, etc. (average per acre). 



FaU 



plowed 

 (1 plat). 



Spring 

 plowed 

 (2 plats). 



Disked 

 (1 plat). 



Summer 



tilled 

 (1 plat). 



Small 



grain 



(3 plats). 



Corn 

 (1 plat). 



Yields of grain: 



1908 bushels. . 



1909 do.... 



1910 do.... 



1911 do.... 



1912 do.... 



1913 do.... 



1914 do.... 



24.0 

 39.0 

 31.1 

 1.2 

 C 1 ) 

 34.8 

 20.2 



34.0 

 44.5 

 24.1 

 6.0 

 CO 

 19.7 

 19.2 



45.6 

 53.8 

 28.6 

 12.3 



CO 



44.8 

 39.1 



30.0 

 50.0 

 24.0 

 19.1 

 CO 

 36.9 

 35.2 



30.6 

 42.7 

 26.4 

 4.4 

 CO 

 24.7 

 19.5 



45.6 

 53.8 

 28.6 

 12.3 

 CO 

 44.8 

 39.1 





25.1 



24.6 



37.4 



32.5 



24.7 



37.4 







Crop value, cost of production, etc. : 



Value 



$10. 29 

 6.46 



$10. 09 

 5.99 



$15. 33 

 4.65 



$13.33 

 11.40 





Cost 













Profit 



3.83 



4.10 



10.68 



1.93 











Destroyed by hail. 



EDGELEY FIELD STATION. 



The results of eight years of uninterrupted work are presented from 

 Edgeley, N. Dak. In five of these years the yields were good, in one 

 year they were light, and in two years the crops were practically 

 failures from all methods under trial. No method showed any merit 

 in overcoming the drought of these extreme years at this station. In 

 five of the years under study the highest yield was obtained on disked 

 corn ground. The maximum yield by this method was 37.1 bushels 

 per acre, while the average for the eight years was 23.4 bushels per acre. 



