18 



BULLETIN" 219, U. S. DEPARTMENT OP AGRICULTURE. 



it did not mature. In the other three years but few ears set and the 

 yield was chiefly stover. 



Table IX. — Yields and cost of production of corn by different methods at the Edgeley 

 Field Station, 1907 to 1914, inclusive. 





Fall plowed. 



Spring plowed. 







Yields, values, etc. 

 (average per acre). 



After corn 

 (1 plat). 



After small grain 

 (5 plats). 



After corn 

 (1 plat). 



After small grain 

 (20 plats). 



(1 plat). 





Grain. 



Stover. 



Grain. 



Stover. 



Grain. 



Stover. 



Grain. 



Stover. 



Grain. 



Stover. 



Yields: 



1907 



Bush. 









 33.3 













 19.4 



3.6 



Lbs. 



2,850 

 2,300 

 2,350 

 2,100 

 4,750 

 6,250 

 2,100 

 1,610 



Bush. 









 29.8 















19.6 

 16.5 



Lbs. 



3,200 



2,150 



2,750 



1,250 



4,730 



6,040 



2,486 



3,004 



Bush. 









 37.4 













 16.0 



5.1 



Lbs. 



1,550 



2,250 



2,650 



1,650 



4,400 



7,300 



2,850 



2,380 



Bush. 









 29.7 













 21.8 

 15.9 



Lbs. 



2,261 



1,973 



3,025 



1,661 



4,572 



6,382 



2,965 



3,117 



Bush. 









 36.5 













 14.1 



3.9 



Lbs. 

 1,150 



1908 



1,500 



1909 



2, 050 



1910 



1,850 



1911 



5,500 



1912 



6,500 



1913 



1,850 



1914 



3,010 





Average 



7.0 



3,039 



8.2 



3,201 



7.3 



3,129 



8.4 



3,245 



6.8 



2,926 





$2.80 



$6.07 



$3.28 



$6.40 



$2.92 



$6.26 



$3.36 



$6.49 



$2.72 



85.-85 









$8.87 

 7.49 



$9.68 

 7.49 



$9.18 

 7.11 



$9.85 

 7.11 



$8.57 



Cost 



12.36 







Profit or loss. . 



1.38 



2.19 



2.07 



2.74 



-3.79 



On the whole, only small differences are exhibited in the yields 

 from different methods of preparation for the corn crop. There is a 

 slight advantage in favor of spring plowing over fall plowing on both 

 corn ground and small-grain stubble. The yields of both grain and 

 stover were somewhat better when the corn followed small grain 

 than when it followed corn. The relative response to these sequences 

 was the same on both fall and spring plowing. 



The four preparations for corn — fall and spring plowing following 

 corn and fall and spring plowing following small grain — rank in order 

 of yield obtained as follows: (1) Spring plowing on small-grain 

 stubble, (2) fall plowing on small-grain stubble, (3) spring plowing on 

 corn ground, and (4) fall plowing on corn ground. Average profits 

 ranging from $1.38 to $2.74 per acre have been realized by these 

 methods. The difference exhibited in the results attending the use 

 of these methods is not great enough to be in itself a determining 

 factor in the choice of rotations or in the management of the farm and 

 its work. Summer tillage as a preparation for corn has given poorer 

 results than any other method. In only one year has it been pro- 

 ductive of the largest crop. The average yield of both grain and 

 stover by this method is less than by any other method under study. 

 The value of the average corn crop on summer-tilled land has been 

 $3.79 per acre less than the cost of its production as crop values and 

 comparative costs are here computed. 



