WINTER WHEAT IN THE GREAT PLAINS AREA. 18 
uted in part to the relatively low cost of the method. The profits 
of all other methods under trial range from $5.72 on deep fall plow- 
ing of winter wheat stubble to $7.92 on listed wheat stubble. 
TABLE VI.— Yields and cost of production of winter wheat by different methods at the 
Huntley Field Station, 1913 to 1916, inclusive. 
Yield a bushels). 
Raiser ield per acre (bushels) 
Treatment and previous crop. of plats 
averaged.| 4973 1914 1915 1916 | Average. 
Deep fall plowed: Winter wheat.......... gL ic se Ged iy 1353 WAY W/o? 
Shallow fall plowed: Winter wheat......-.. STS) eR as 30.8 12.3 13.7 18.9 
Listed: Winter wheat..........:... ee 1D | ee es 26. 2 183, 1 16.3 18.5 
Subsoiled: Winter wheat.......... Bea os, oe Al ghee ees ee 27.8 13.6 15.5 19.0 
Disked=i Comat se pe eases 4 27.4 31.5 26.8 7/583) 25.8 
Green manured: 
\Wali s\n asta Ges GaGa SERS ase De reise ies eer 2 22.8 36.3 30.9 14.9 27.9 
VIRVAUUTL OV YSIS gS eS SBR ae AE 2. 36.9 33.5 38.7 23.4 33. 1 
TOCA OT AVOLAL Osa. 8/40 Seis nse cel 4 29.9 34.9 38. 2 19.2 30. 6 
Romnmmertilladstese eke (Pe aie ue 3 41.6 40.6| @56.1| 619.4 39.4 
Ptvora coronal Sn plats cree eee ene ae lie ana 32.2 33. 2 c 38.0 d 18.0 30. 4 
SUMMARY OF YIELDS AND DIGEST OF CosT. 
Tillage treatment. Previous crop. 
Yields, values, etc. (average 
per acre). fall 10x Teisted Subs eae Green ae in orn (4 
plowed (iplat):|/So42 nured(4| tilled (3|~12"@| plats). 
(i plat). bee (1 plat).| plats). plats). | plats). plats). 
pags of grain: 
150.2 eeee us helse | ys soe | pee tere omc ee ee ame ew 2 ea 29.9 AU Grey aie 27.4 
jolt oe Be Sie Ree do.. 25.7 30.8 26. 2 27.8 31.5 34.9 40.6 27.6 31.5 
LOD ee ree ee do.. 13.3 12.3 13.1 13.6 26.8 38.2 | @ 56.1 13.1 26.8 
GIG See eet do. 12.7 13.7 16.3 15.5 17.3 19.2} 619.4 14.6 17.3 
DENG (2) 52 02S 17.2 18.9 18.5 19.0 25.8 30.6 39. 4 18.4 25.8 
Crop value cost, ete.: 
Waliichseerone eer eee $12. 04 | $13.23 | $12.95 | $13.30 | $18.06 | $21.42 | $27.58 |........].... 2... 
COS se ees 6. 32 5. 65 5.03 7.03 4.25 1 SS9GH|— LOS Gp | eee eae | epee ene 
ILO tee Mek VR See ee 5.72 7.58 7.92 6. 27 13. 81 7.46. Oa fo eee ete See 
a Hight platsin 1915. © Nine platsin 1916. ¢ Twenty platsin 1915. 4d Twenty-one plats in 1916. 
BELLE FOURCHE FIELD STATION. 
The field station near Newell, S. Dak., on the Belle Fourche 
Reclamation Project, is located on a heavy gumbo clay soil. The 
soil is derived from the decomposition of Pierre shale. From the 
soil at the surface there is a rapid change to broken but undecom- 
posed shale. Near the bottom of the second foot is a comparatively 
impervious layer of soil. The first foot and at least a part of the 
second foot carry a large supply of available water. It is probable 
that but little use is made of either water or soil below the first 2 feet. 
In spite of the heavy soil and the large supply of water that can be 
obtained by the plant from that portion of it near the surface, the 
