28 CULTIVATION METHODS AND ROTATIONS FOR GREAT PLAINS. 



columns headed " Wheat at 60 cents/' "Oats at 30 cents," and 

 " Barley at 38 cents/' respectively, may be used to make comparisons 

 of yields per acre and farm values per acre between continuous 

 cropping and crop rotation for wheat, oats, or barley in any rota- 

 tion or for any test reported in Tables VI to XIV, inclusive. 



Table V. — Yields from continuous cropping by ordinary methods, in bushels and in 

 farm value per acre, at average prices for the ten years 1900-1909 , inclusive. 



Station. 



Year. 



Wheat at 60 

 cents. 



Oats at 30 

 cents. 



Barley at 38 

 cents. 



Average 



for 

 wheat 

 and oats. 



Average 



for 

 barley 

 and oats. 







Bush. 





Bush. 





Bush. 









Judith Basin, Mont 



1909 



33.0 



$19. 80 



75.3 



$22. 59 



45 



2 



$17.20 



$21.20 



$19.90 



Dickinson, N. Dak 



1908 



24.3 



14. 58 



48.4 



14. 52 



33 



5 



12. 73 



14. 55 



13.62 



Do 



1909 



26.8 



16. 08 



55.9 



16. 77 



39 



8 



15. 12 



16.42 



15.95 



Edgeley, N. Dak 



1907 



4.1 



2.46 



21.3 



6. 39 



10 



2 



3.88 



4. 43 



5.13 



Do 



1908 



13.3 





16.9 



5.07 



25 







9. 50 



6. 53 



7.29 



Do 



1909 



28.3 



16! 98 



57.5 



17. 25 



27 







10. 26 



17.11 



13.75 



Highmore, S. Dak 



1907 



28.8 



17. 28 



45. 3 



13.59 



30 



2 



11.48 



15.44 



12. 53 



Do 



1908 



26.3 



15. 78 



34.4 



10. 32 



29 



8 



11.32 



13.05 



10.82 



Bellefourche, S. Dak .... 



1909 



23.8 



14. 28 



48.8 



14. 64 



23 



8 



9.04 



14. 46 



11.84 



North Platte, Nebr 



1907 



24.5 



14. 70 



30.0 



9. 00 



39 







14.82 



11.85 



11.91 



Do 



1908 



22.7 



13.62 



34.2 



10.34 



19 



6 



7.45 



11.98 



8. 90 



Do 



1909 



23.0 



13.80 



31.3 



9.39 









11.59 



9. 30 



Akron, Colo 



1909 



. 14.3 



8. 58 



21.1 



6. 33 



19 



7 



7.49 



7. 46 



6. 91 



Hays, Kans 



1908 



1.2 



.72 



1.3 



.39 



5 



8 



2.20 



.56 



1.30 



Garden City, Kans 



1909 



2.1 



1.26 



1.0 



.30 



2. 



4 



.91 



.78 



.61 



Dalhart, Tex 



1909 



0.0 



0. 00 



0.0 



0. 00 











0.00 



0.00 



0.00 



Amarillo, Tex 



1908 



17.0 



10. 20 



20.0 



6. 00 



7 



9 



3.00 



8.10 



4. 50 



Do 



1909 



0.0 



0. 00 



0.0 



0. 00 











0.00 



0.00 



0. 00 



Average 





17.4 



10. 44 



30.2 



9.06 



21 



1 



8.02 



9.75 



8. 53 







The following nine tables, Tables VI to XIV, inclusive, show in 

 detail the yields per acre in bushels and the farm value per acre for 

 each of the three crops grown in the nineteen tests. The farm values 

 have been calculated on the basis of 60 cents for wheat, 30 cents for 

 oats, 38 cents for barley, and 39 cents for corn. 



In these tables the average farm values in dollars per acre of the 

 two small-grain crops only in each rotation have been considered. 

 Seven of these rotations contain corn crops, and two of them, Nos. 

 5 and 8, a year of summer tillage each. There is therefore one factor — 

 the yield of the corn crop — which has so far been neglected in con- 

 sidering the relative yields of the rotations. This omission is to be 

 regretted, but it seemed unavoidable for the following reasons: 



(1) The corn crop lends itself much less readily to growing on 

 small plats so as to give results comparable to those of large fields 

 than do wheat, oats, and barley. While careful records of all corn 

 yields have been kept, they are not entitled to the same confidence as 

 the small-grain yields. (2) Very little, if any, of the Great Plains 

 area can be considered as a corn-growing country. In most of the 

 area corn can and will be profitably grown, but a considerable share 

 of the profit from its growth will be derived from the beneficial effect 



187 



