WINTER WHEAT IN THE GREAT PLAINS AREA. 29 
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 XVIII will assist in this study. 
TasLteE XVIII.—Comparison of the average yields and profit or loss on the production 
of winter wheat by different methods at thirteen stations in the Great Plains area. 
Method of tillage. 
Num- 
Stat t of dat pene 
atement of data. years . 
aver- | “irr | “fat | sisted. | S¥b- | piskea.| ‘ma. | Summer 
ged. * | soiled. 3 tilled. 
as plowed.a|plowed.a nured 
Yields per acre (bushels): 
Wuditibasine... 2.2.2... 7 18.2 18.0 17.2 18.3 620.2 C24, 4 25.7 
antleys =. osi2--- 22s 4 b17.2 b18.9 618.5 519.0 25. 8 30.6 39.4 
Belle Fourche. ..........- 8 12.4 12.7 14.3 La oceelshicc|soecwcese 23.1 
ATAMOre Shs ses. Let. 3 19.7 19.0 19.7 22.6 22.2 21.0 25.5 
PAT ENCES ee ee ee 3 10.7 10.0 8.9 8.9 213.6 213.8 12.6 
5 9.1 5.4 €3.8 413.7 15.4 15.3 20.6 
5 16.7 1b: See eec|eacetecs: 19.5 21.5 21.6 
7 13.7 13.3 14.2 12.0 19.7 16.8 PAL TL 
9 17.6 11.0 19.2 19.6 15.4 17.0 OPT 
7 2.3 an 3.4 3.8 353 5.2 5.9 
6 3.1 2.9 Tip ASS. apr aes. b0 b0 3.5 
8 9.7 8.4 8.5 8.2 Coal 8.0 10.6 
3 2.7 DB 1 [3.5 a ee ei boise et (As Bhat 
Ss TGTRE GUE Ae BABE Ree (cetiai e 11.8 10.8 11.8 13.8 14.7 15.8 18.3 
Average for the 9 sta- 
tions at which all 
methods are used.....|......... 13.1 | 11.8 12.6 14.0 15.9 16.9 20.7 
Profit or loss (—) per acre: 
uduphibasin=- 5-225. 2 Hi $6. 42 $6. 95 $7.01 $5.78 | 089.89 | ¢$3.12 $7.35 
nmtleyee ds ci -bieces 4 b5.72 67.58 67.92 06.27 13. 81 7.46 16. 94 
Belle Fourche...........- 8 2.36 3. 24 4.98 SAS loeeeeeelsosessces 5.53 
BARRON OFC) a as oP Biv, 3 7.47 7.65 8.76 8.79 11. 29 -74 7.21 
PAR CHORAC EE or sche on: 3 iBT / 1.35 1. 20 — .80 d5.27 |\d— 4.30 —1. 82 
meottsblufies cess ho). 5 .05 | —1.87 | €—2.37 42.56 6.53 | — 3.25 3.78 
Noniimblaibess- 558-2. oe 5 5.37 ba hs a al a 9. 40 1.09 4.48 
TSH) es Oe a 7 3.27 3. 66 4.91 1.37 9.54 | — 2.20 5. 53 
PAV SRO ee eee cs ease 9 6. 00 2.05 8.41 6. 69 6.53 | — 2.06 5. 25 
Garden) @ity =. -—-2.- 24: 7 —4.71 —3. 90 —2. 65 —4,. 37 —1.94 | —10.32 —6.51 
Danahiee ete eee 6| —4.15} —8.62 | 7—3.28 |......... b —4, 25 |b—13. 96 —8.19 
AMmarilige: = a. = fee tener] 8 47 23 92} —1.29 72 | — 8.36 —3. 22 
atictiniearioss on no 304543 4 4G eee Pacepiee ee —8. 47 
| 
a At Huntley and Judith Basin there is no difference in time of plowing. The plats at these stations 
designated as plowed ‘‘early’”’ were plowed deep; those designated as “‘late’’ were plowed shallow. 
b Three years. c Six years. d Two years. e One year. f Four years. 
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 by each method for which it has been com- 
puted at each station. 
Table XVIII shows that at five of the stations (Judith Basin, 
Huntley, Belle Fourche, Ardmore, and North Platte) wimter wheat 
has been grown at a profit by all the methods under trial. At two 
(Akron and Hays) all methods except green manuring have been 
