WINTER WHEAT IN THE GREAT PLAINS AREA. 
23 
rye and after peas average practically the same, though in 1908 the 
yield after peas was very much lower and in 1910 very much higher 
than the yield after rye. 
of common field 
peas. 
Previous to 1910 cowpeas were used instead 
(Table XIII.) 
TasiE XIII.— Yields and cost of production of winter wheat by different methods at the 
Hays Field Station, 1907 to 1916, inclusive. 
Num- Yield per acre (bushels). 
Treatment and Deve 
previous crop. ee 5 : econ 
aged. 1907 | 1908 | 1909 | 1910 | 1911 | 191 1913 | 1914 | 1915 | 1916 age. 
Early fallplowed: Win- 
ter wheat............ 1 | 18.2} 23.2 )¢H | 27.8) 0.3 | 13.8] 2.3 | 24.8 018.1 [629.7 17.6 
Late fall plowed: Win- 
ter wheat..........-. 1) 11.7} 25.6} H | 20.3] 0 2.3 -8 | 20.6] 9.3) 87 11.0 
Listed: Winter wheat... 1| 12.4] 28.1!) H | 36.7 -6 | 26.6 | 8.4} 23.1} 13.9 | 23.1 19. 2 
Subsoiled: Winter 
Wiig: ane = ee Paes 1 | 13.6 | 30.5} H | 39.8 -3 | 20.1) 4.1] 25.3 | 14.9 | 27.6 19.6 
Disked: Corn.......... 4) 8.2) 11.1) H | 28:2 -3 | 13.6 | 7.2 | 18.0} 20.1 | 31.7 15.4 
Green manured: 
With rye..........- 2) 10.9] 22.5} H | 26.8] 1.8] 6.6] 8.4] 21.7] 20.8 | 31.3 16.8 
With peas ¢ .__.-.. 2/14.3/¢49.4) H | 39.7] 2.0) 7.5] 5.7) 23.0] 20.9 | 31.5 17.1 
Total or average. . AN LZNG ELS loos... 33:2) 1.9) 7.0) 7.1 | 21.1 | 20:8 | 31.4 17.0 
Summer tilled......... 2 \d12.3 | 30.7] H | 42.6] 3.9 | 28.5 | 13.4 | 20.8 |/16. 4 |736.0 22.7 
Average of all 14 plats..|........ 11.6 | 20.6 |...-.. 32.5] 1.3) 14.4] 7.1 | 20.8 |917.0 |933. 7 17.7 
SUMMARY OF YIELDS AND Digest or Cost. 
Tillage treatment. Previous crop. 
Yields, values, ete. Early | Late Sub- Green | Sum- | Winter 
(average per acre). fall fall | Listed | soiled | Disked| ma- mer | wheat | Corn 
plowed} plowed| (1 qa (4 nured | tilled (4 (4 
al @l plat). | plat). | plats). (4 (2 plats). | plats). 
plat). | plat). plats). | plats) 
Yields of grain: 
® iy /3 Bae See bushels 18. 2 11.7 12.4 13.6 8.2 12.6 | @12.3 14.0 8.2 
TCDS; Se eee ae do.. 23. 2 25.6 28. 1 30. 5 11.1} €18.1 30.7 26.9 is 7 
TICS] 0/S 3 er eee eet do....| aH H H H H H H H H 
TOUOR Yea pe. do. 27.8 20. 3 36.7 39. 8 28. 2 33. 2 42.6 31.2 28.2 
HOUSE B. atb. do. 3 0 -6 -3 ae 1.9 3.9 13 38) 
DUD retard do. 13.8 2.3 26.6 20.1 13.6 7.0 28.5 15.7 13.6 
1OIBRE SS See do. 253 .8 8.4 4.1 02 Gl 13.4 3.9 7.2 
QTASi re ae Teer do. 24.8 20.6 23. 1 25.3 18.0 21.1 20. 8 23.5 18.0 
1G) See ese ae ae do. 618.1 9.3 13.9 14.9 20. 1 20.8 | £16.4] 415.4 20.1 
TG Ss Seen eee ee do. b 29.7 8.7 23.1 27.6 31.7 31.4 | 36.0] 224.8 Sil, 7 
PAVCTAR Oo oc) cince one 17.6 11.0 19. 2 19.6] (15.4 17.0 ONT 18. 4 15.4 
Crop value, cost, etc.: 
elie we ee eee ae See $12.32 | $7.70 | $13.44 | $13.72 | $10.78 | $11.90 | $15.89 |........]_......- 
COS Gan neeseeice 6. 32 5. 65 5. 03 7. 03 A by |) eR es TO Gc eee 
Profit or loss........... G1003 |e 2405),| 01 5: 41g GG) ekGs53 | 2506))|" besa 1h eee ee | ea 
a H=destroyed by hail. 
b Three plats in 1915 and 1916. 
¢ Cowpeas were grownfrom 1906 to 1909; field peas grown since 1909. 
d One plat. 
e Three plats in 1908. 
f Thirty-one plats. 
g Forty-five plats in 1915 and 1916. 
h Six plats in 1915 and 1916. 
The highest profit has been obtained from listing, which yields a 
greater profit than subsoiling, because it is a less expensive method. 
The profit on disked corn ground is slightly lower than from subsoiling 
