WINTER WHEAT IN THH GREAT PLAINS AREA, 
ae 
the dry-land agriculture rotations from summer tillage and early fall 
plowing of winter-wheat stubble for the years 1912 to 1916, inclusive, 
show an average yield for the 10 years of 30.6 bushels per acre from 
summer tillage and 15.3 bushels on early fall plowing. 
Taste X.— Yields and cost of production of winter wheat by different methods at the 
North Platte Field Station, 1912 to 1916, inclusive. 
NubeR Yield per acre (bushels). 
Treatment and previous crop. of plats 
ayetaged.| gram iiss) iota agi: |" 1916 | Ayerace: 
Early fall plowed: 
Wanterwineate. sete ssl os eects ee 1 ay 3.8 4.7 39.8 28.3 16.9 
Winter wheat (manured)............. 1 Be) 2.2 4.5 31.2 31.3 WES 74 
CERCA BEAR CROSS ERR ieee terete ana 1 10.5 3.8 7.2 42.5 23. 0 17.4 
Motaliomaverage /2 4. 14s LM su Ty 3 2 3.3 5.5 37.8 27.5 16.7 
Late fall plowed: Winter wheat..........- 1 ay 3. 2 3.3 39.7 23.5 15.4 
Disked: 
Winterwheat 2275/2 2g eee sec. ee 2 B 4.3 3.0 38. 0 26.3 14.6 
(till. Uo Seen eB ee Cones BAO T CHC eSe eee 9 10.0 16.9 8.0 37.3 38. 4 22.1 
OAiSaee eet eae sisitec eee cnate Sse celeste 2 7.1 3.3 42.6 12.4 13.1 
OtatOes aso seei 58 see fae 1 14.5 (66) 36.3 33. 6 18.4 
Motalonaveraveeitac: sscsec cesses 14 | 6 13.5 6.6 38. 0 32.6 19.5 
Green manured: 
WADE Ore ajo vias cece cet Me males eases 1 28. 2 24.0 8.3 18.3 34.3 22.6 
AV WiEUEDGrStrece scree thee cis nto aie ae assis s 1 23. 8 15. 5 LES 25.3 25. 3 20.3 
MOUAKOMANCLALO aa) 2 emit= sie) cose. 2 26. 0 19.8 10.0 21.8 29. 8 21.5 
Bummer Giled es... cael oes oS eealege = eis a 5 1257 23.7 10. 1 31.7 30. 0 21.6 
PAV ELArOOneAll Zo. DIALS ec cccsisinis -\=\-i-/= <1 eis a|'eemece= 2 on 14. 4 7.3 35. 5 30. 9 19.6 
SUMMARY OF YIELDS AND DIGEST OF Cost. 
Tillage treatment. Previous crop. 
Yield, values, ete. Early | Late Green | Sum- AI inter Pota- 
(average per acre). fall fall | Disked| ma- mer | smali eat Oats | Corn | toes 
plowed | plowed} (14 nured | tilled | grain G 3 (9 ad 
(3 (1_ | plats). (2 (5 (8 lats) plats). | plats).| plat). 
plats). | plat) plats). | plats). | plats). | P’#%S?- 
Yields of grain: 
1912....... bushels. - 9.2 ez 6.6 26.0 12.7 4,7 5.4 3.5) 10.0 0 
hOlgeeeera ee dOws es 3.3 BHP} 13:5 19. 8 23.7 4.5 3.5 6.0} 16.9 14.5 
NOI esos dO... 525 3.3 6.6 10.0 10,1 4.0 3h 7 4.6 8.0 (aS 
ID seco oo ODE 37.8 39. 7 38. 0 21.8 31.7 39.3 37.3 | 42.5) 37.3 36.3 
DOUG ee eere see do. 27.5 23.5 32. 6 29. 8 30. 0 22.9 27.1 15.9 | 38.4 33. 6 
Average....----.. 16.7 15. 4 19.5 21.5 21.6 15.1 W5E4A 14s 5) | 22-1 18. 4 
Crop value, cost, ete.: oe 
SUE eee seem e SLIGO S104 78) | ol3s65) | lon Obl iaasee oy | emer I eek | eae oe eee 
WOSte-o eee ene tene 6.32 5. 65 AS25213! GOR MMR GAS iru Te ee ea a 
Profitisscssesesce: 5.37 5.13 9. 40 1.09 ANA SH | stabs ee |e lei Sea ee ial a erayevail netic ore 
soil is underlain with a bed of gravel. 
ARCHER FIELD STATION. 
The work at the Archer station is on a very high upland. The 
soil is a uniform, medium-dark sandy loam, with some fine gravel 
distributed very evenly through it. 
At a depth of 3 to 6 feet the 
Commonly a hardpan of 
