38 



BULLETIN 218, U. S. DEPARTMENT OE AGRICULTURE. 



GENERAL DISCUSSION OF RESULTS. 



In the preceding pages data have been presented and briefly dis- 

 cussed separately for each station without reference to results at 

 other stations. In the following pages the data are considered 

 from a more general standpoint. Table XIX will assist in this study. 



In this table the average yields at the several stations are grouped 

 under different methods of preparation. The figures here given are 

 taken from the tables showing details for each station. 



Data in regard to yields and cost of production are also assembled 

 in such a way as to show the profit or loss in dollars and cents per 

 acre for the average crop for each method for which it has been 

 computed at each station. 



Table XIX. — Comparison of the average yields and profit or loss in the production of 

 oats by different methods at fourteen stations in the Great Plains area. 





Number 

 of years 

 averaged. 







Methods of tillage. 







Statement of data. 



Pall 



plowed. 



Spring 

 plowed. 



Listed. 



Sub- 

 soiled. 



Disked. 



Green 

 ma- 

 nured. 



Sum- 

 mer 

 tilled. 



1 



2 



3 



4 



5 



6 



7 



8 



9 



Yields per acre (bushels): 1 



Judith Basin. . . .\ 



5 

 2 

 5 

 6 

 8 

 3 

 - 6 

 3 

 8 

 6 

 6 

 6 

 4 

 6 



49.9 

 43.4 

 33.5 

 34.4 

 32.2 

 22.8 

 16.1 

 18.2 

 17.8 

 21.7 

 20.7 

 8.7 

 4.5 

 17.6 



51.2 

 49.2 

 36.2 

 36.9 

 31.4 

 32.0 

 18.0 

 22.2 

 18.5 

 23.9 

 17.6 

 6.0 

 3.5 

 15.1 



49.9 

 47.2 



49.5 

 46.1 



53.3 

 53.0 

 37.9 

 47.5 

 33.5 

 35.1 

 21.9 

 26.3 

 17.9 

 20.5 

 20.7 

 8.8 

 4.0 

 15.8 



54.8 

 58.6 

 39.1 

 44.0 

 35.1 

 22.2 

 22.4 

 28.7 

 22.0 

 19.9 



9.2 

 .3 



17.3 



58.4 

 59.2 





43.9 









49.9 









38.3 









32.1 





18.8 

 20.4 



17.5 

 20.4 



29.8 



Scottsbluff 



38.2 



North Platte 



27.4 





21.9 

 22.9 

 12.8 

 5.9 

 17.0 



16.9 

 22,7 

 9.2 



15.1 



28.7 





24.8 





12.8 





9.3 





27.6 









5 



24.4 



25.8 



24.1 



24.7 



28.3 



28.7 



34.3 







Profit or loss (— ) per acre: 



5 

 2 

 5 

 6 

 S 

 3 

 6 

 3 

 8 

 6 

 6 

 5 

 6 

 6 



$8. 66 

 6.71 

 3.74 

 4.01 

 3.35 

 .53 

 -1.48 



- .85 



- .97 

 .20 



- .10 

 -3.70 

 -4.96 

 -1.03 



89.52 

 8.92 

 5.02 

 5.23 

 3.5S 

 3.76 



- .44 

 .82 



- .29 

 1.33 



- .56 

 -4.04 

 -4.79 

 -1.31 



89.67 

 8.86 



87.93 

 6.91 



811.49 



11.40 



6.87 



9.75 



5.55 



6.03 



2.07 



3.39 



.87 



1.65 



1.71 



-1.86 



-3.30 



.24 



82. 08 

 3.22 



- 2.63 



- 1.16 



- 3.83 



- 7.70 



- 7.64 



- 5.75 



- 7.76 



- 8.39 



-11.60 

 -14.27 



- 9.17 



86.27 





6.51 





1.92 









3.72 









.24 





.34 

 .82 



-1.67 

 - .80 



—1.62 





-2.31 



Scottsbluff 



North Platte 



.21 

 -3.03 



Akron 



Hays 



1.27 



1.57 



-1.46 



-3. 53 



- .20 



-1.85 



- .11 

 -4.16 



-2.39 



-2.64 

 -3.81 

 -7.41 



Dalhart 



-8.46 

 -2.97 







1 The averages of columns 3, 4, 7, and 9 only are comparable. 



On the whole, seasonal conditions have produced much wider 

 variations in yields than have been produced by differences in cul- 

 tivation. Some seasons are so favorable that any and all methods 

 give good returns at stations where oats can be successfully grown. 



