SPRING WHEAT IN THE GREAT PLAINS AREA. 



27 



"Table XIII. — Yields and cost of 'production of spring wheat by different methods at the 

 North Platte Field Station, 1907 to 1914, inclusive. 



Treatment and previous 



Number 

 of plats 

 averaged. 









Yield per acre 



(bushels). 







crop. 



1907 



190S 



1909 



1910 



1911 



1912 



1913 



1914 



Average. 



Fall plowed: 



Oats 



2 

 2 

 1 



22.5 



26.3 

 26.0 



28.7 

 27.3 

 27.3 



21.3 

 16.0 

 15.3 



7.6 

 6.8 

 6.7 





 







6.4 

 4.7 

 11.2 



4.1 

 1.3 



1.8 



5.5 

 6.1 

 5.2 



12.0 

 11.1 



Wheat 



11.7 







Total or average... 



5 



24.7 



27.8 



18.0 



7.1 





6.7 



2.5 



5.7 



11.6 



Spring plowed: 



1 

 1 

 1 



1 



23.7 

 20.8 

 24.5 

 23.5 



24.0 

 17.5 

 22.7 

 20.3 



17.2 

 16.7 

 23.0 

 16.3 



5.2 



8.7 

 6.8 

 8.7 





 

 

 



5.3 

 8.8 

 12.8 

 3.8 



1.5 

 1.8 

 2.0 

 3.3 



5.0 

 2.2 



6.0 

 5.2 



10.2 





9.6 



Wheat 



12.2 





10.1 







Total or average... 



4 



23.1 



21.1 



18.3 



7.4 





7.7 



2.2 



4.6 



10.6 



Disked: 



8 



1 



24.5 



24.2 



14.5 



7.3 







4.6 

 5.2 



3.0 

 4.2 



5.1 



6.9 



10.4 





5.4 















Total or average... 



9 



a 24. 5 



a 24. 2 



a 14. 5 



<*7.3 1 



a4.6 



3.1 



5.3 



10.5 





3 



28. 9 



41.4 



22.6 



15.3 







7.1 



6.8 



12.5 



16.8 











24.7 



26.3 



17.1 



8.7 





6 6.4 



c3.2 



6.3 



11.6 









Summary of Yields and Digest of Cost. 





(average per 



Tillage treatment. 



Previous crop. 



Yields, values, etc. 

















acre) 





Fall 



plowed 

 (5 plats). 



Spring 

 plowed 

 (4 plats). 



Disked 

 (S plats). 



Summer 



tilled 

 (3 plats). 



Corn 



(11 plats). 



Small 



grain 



(5 plats). 



Sorghum 

 (1 plat). 



Yields of grain: 



















1907 



bushels.. 



24.7 



23.1 



24.5 



28.9 



24.1 



24.8 



23.5 



190S 



do.... 



27.8 



21.1 



24.2 



41.4 



25.0 



24.4 



20.3 



1909 



do.... 



18.0 



18.3 



14.5 



22.6 



16.0 



17.4 



16.3 



1910 



do.... 



7.1 



7.4 



7.3 



15.3 



7.1 



7.2 



8.7 



1911 



do.... 































1912 



do.... 



6.7 



7.7 



4.6 



7.1 



5.0 



8.4 



5.8 



1913 



do.... 



2.5 



2.2 



3.0 



6.8 



3.0 



1.6 



3.3 



1914 



do.... 



do.... 



production. 



5.7 



4.6 



5.1 



12.5 



5.2 



5.1 



5.2 



Average 



11.6 



10.6 



10.4 



16.8 



10.7 



11.1 



10.1 



Crop value, cost oi 

















etc.: 























S8.12 



87. 42 



S7.28 



811. 76. 









Cost 



6.56 



6.09 



4.75 



11.50 



















Profit 



1.56 



1.33 



2.53 



.26 

















a Average of 8 plats. 



b Average of 22 plats. 



: Average of 23 plats. 



Some of the results of the work of eight years are exhibited in 

 Table XIII. Three of these years have been productive of good to 

 heavy crops of wheat; in four years the average yields were light; 

 and in the remaining year under study the crop was a total failure 

 on account of drought, together with some damage from grass- 

 hoppers. The general averages of spring-wheat yields for the eight 

 years range from 9.6 to 16.8 bushels per acre, according to the prepa- 

 ration and previous cropping of the land. A comparison of the 



