14 



BULLETIN 219, U. S. DEPARTMENT OF AGRICULTURE. 



A careful study of the yields in Table V shows that the seasonal 

 influence is much greater than the influence of tillage. This is brought 

 out by the wide variation in average yields in different years and the 

 much smaller variation in the yields from different methods within 

 the same year. 



Good or heavy average yields of fodder are shown by all methods, 

 but little consistent advantage of one method over another. The 

 lack of consistent differences in yield by various methods of tillage 

 indicates that this soil offers little response to any particular method 

 of seed-bed preparation for corn. This lack of response is doubtless 

 due to the shallowness of the soil, and has been found true thus far for 

 the spring-sown small grains, as well as for corn. Perhaps the chief 

 thing to be noted in the yields is that corn has averaged somewhat 

 better after corn than after small grain. Summer tillage has been 

 productive of yields intermediate between the two. 



Table V.- 



Yields and cost of production of corn by different methods at the Judith Basin 

 Field Station, 1909 to 1914, inclusive. 





Fall plowed. 



Spring plowed. 



Sub- 

 soiled, 

 after 

 corn 



(1 

 plat). 



Listed, 



after 



corn 



(1 



plat). 



Sum- 

 mer 

 tilled 



(1 

 plat). 



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



After 

 corn 



(1 

 plat). 



After 

 small 

 grain 



(9 

 plats). 



After 

 corn 



(1 

 plat). 



After 

 small 

 grain 

 (16 

 plats). 



Yields of stover: 



1909 pounds . . 



1910 do. . . . 



1911 do. . . . 



1912 



11,120 

 2,900 

 7,000 

 C 1 ) 



4,000 

 3,700 



10,011 

 2,385 

 6,174 

 C 1 ) 



3,683 

 4,122 



10, 100 

 2,760 

 7,250 



C 1 ) 



5,000 

 4,900 



8,603 

 2,626 

 5,895 



C 1 ) 



4,227 

 4,500 



11,420 

 3,650 



4,780 



C 1 ) 



5,800 

 5,000 



11, 700 



3,260 

 6,700 

 C 1 ) 



4,450 

 3,800 



11,530 

 3,300 

 3,850 

 C 1 ) 



6,100 

 3,500 



1913 pounds. . 



1914 do. . . . 





5,744 



5,275 



6,002 



5,193 



6,130 



5,982 



5,656 







$11.49 

 7.49 



$10. 55 

 7.49 



812. 00 

 7.11 



$10. 39 

 7.11 



$12. 26 

 8.18 



$11.96 

 5.98 



$11.31 



Cost : 



12.36 









4.00 



3.06 



4.89 



3.28 



4.08 



5.98 



-1.05 







1 The crop in 1912 was partially destroyed by hail. Some corn was produced, but the lack of uni- 

 formity in the yields makes it inadvisable to use the results in this table. 



All methods except summer tillage have been productive of profit- 

 able crops. The greatest profit, $5.98 per acre, has been by the least 

 expensive method — listing. The next largest profit, $4.89 per acre, 

 has been by spring plowing after corn. Excluding summer tillage, 

 the small difference in the net results by different methods indicates 

 that the problem is one of utilization of the feed rather than of the 

 method of its production. 



HUNTLEY FIELD STATION. 



The results of two years at Huntley, Mont., are shown in Table VI. 

 In both years good crops of grain were produced. With the excep- 

 tion of subsoiling, the relative performance of different methods is 



