WINTER-WHEAT PRODUCTION AT FORT HAYS STATION. 



29 



nized, of course, that the length of time these experiments have run 

 is insignificant in comparison with the time these soils will be cropped. 

 Regardless of the conclusions to which it may lead, this work is con- 

 sidered of the greatest importance and will be continued. 



Table 12. — Yields of wheat and kafir in rotations Nos. 551 to 560, inclusive, at the Fort 

 Ilays branch station for the 7-year period from 1914 to 1920, incliLsive. 





Yields per acre for the 10 rotations (bushels). 



Crop and year. 



No. 554, 

 straw 



on 

 wheat, 

 3 tons. 



No. 551, 

 check, 

 no ma- 

 nure. 



XT — 



manure 



on 

 wheat, 

 3 tons. 



No. 556, 

 manure 



on 

 wheat, 

 6 tons. 



No. 552, 

 check, 

 no ma- 

 nure. 



No. 557, No. 558, 

 manure manure 

 onkafir, onkaflr, 

 3 tons. 6 tons. 



No. 553, 

 check, 



no ma- 

 nure. 



No. 559, No. 560, 

 manure manure 

 onkaflj, onkaflr, 

 9 tons. 12 tons. 



Wheat: 



1914 



20.2 

 19.7 

 32.6 

 2.2 

 10.8 

 12.2 

 27.3 



22.9 

 17.8 

 29.4 

 6.8 

 11.5 

 13.6 

 30.3 



26.0 

 16.1 

 27.3 

 6.7 

 11.2 

 12.2 

 29.6 



27.0 

 15.3 

 33.9 

 6.8 

 10.5 

 13.0 

 36.0 



24.2 

 14.2 

 37.0 

 7.5 

 10.8 

 10.6 

 37.8 



25.0 

 14.5 

 38.6 

 8.7 

 10.4 

 10.6 

 38.3 



26.2 

 16.2 

 38.8 

 8.9 

 8.8 

 12.3 

 32.9 



26.5 

 19.2 

 40.8 

 7.1 

 11.3 

 11.6 

 37.1 



27.4 

 17.4 

 37.4 

 8.8 

 9.5 

 10.5 

 33.3 



30.3 



1915 



17.3 



1916.... 



35.3 



1917 



11.8 



1918 



10.2 



1919 



11.1 



1920 



32.7 







Average 



17.9 



18.9 



18.4 



20.4 



20.3 



20.9 



20.6 



21.9 



20.6 



21.2 



Kafir: 



1914 



6.8 

 58.2 



7.5 





 .2 

 28.3 

 59.5 



6.8 

 55.5 

 13.8 





 .4 

 36.3 

 54.9 



4.8 

 52.8 

 18.2 





 .4 

 35.8 

 59.6 



5.5 

 55.3 

 11.6 







.4 

 37.2 

 67.7 



8.5 

 54.3 

 12.1 

 .1 

 .4 

 39.7 

 67.4 



7.8 



53.4 



5.8 



.2 



.5 



32.0 



63.6 



6.9 

 51.9 

 2.2 

 .1 

 .5 

 27.7 

 65.3 



8.8 



50.4 



1.3 



.2 



.5 



29.6 



66.6 



9.2 



52.3 



1.1 



.2 



.5 



23.3 



70.8 



7 7 



1915 



47.9 



1916 



6 



1917 



.3 



1918 



1 



1919 



22.2 



1920 



68.3 



-Average 



22.9 



24.0 



24.5 



25.4 



26.1 



23.3 



22.1 



22.5 



22.5 



20.9 



In 1919 experiments were started to determine the effect of com- 

 mercial fertilizers on wheat production. At the same time extensive 

 work was started in further methods of seed-bed preparation for wheat 

 following winter wheat, and a test of the disk and lister drills on the 

 different seed beds. It is too early to draw any conclusions from these 



experiments. 



SUMMARY. 



The Fort Hays branch station is located in Ellis County, Kans. 

 This county is in the western tier of the solid block of '' miUion-bushel" 

 wheat counties in that State. Statistics of the Kansas State Board 

 of Agriculture ^ show that the agriculture of this section has been 

 stabilized for 30 years by devoting nearly three-fourths of the cul- 

 tivated acreage to winter wheat. The statistics also show that during 

 this period there has been no change in yields. The average yield of 

 Elhs County for the 30 years from 1891 to 1920, inclusive, is only 9.6 

 bushels per acre. 



The statistics of crop acreage show that if every acre in other crops 

 were seeded to wheat it would still be necessary to sow approximately 

 two-thirds of the wheat following wheat. About one-half of the other 



9 Kansas. State Board of Agriculture. Biennial Report, v. [3-27], 1874-1919-20. Topeka, 1874-1921. 



