12 BULLETIN 1094, U. S. DEPARTMENT OF AGRICULTURE. 
initial advantage of the fallow, and heavy rainfall in the growing 
period may put it at an actual disadvantage. 
The relation of the moisture in the sol at seeding time to the yield 
of winter wheat has been discussed in detail in a previous publica- 
tion,® which presents the data of both yield and soil moisture from 
these plats for the years 1907 to 1913, inclusive. 
The evidence of these plats discloses nothing new. The value in 
this section of early preparation of wheat stubble when it is to be 
resown to wheat has been demonstrated often and is well known. 
But the length of the record and the relation of the yields to the 
average yield of the county makes an impressive object lesson. The 
low average for the county indicates that by far too large a propor- 
tion of the acreage is late and poorly prepared. The average is of 
course lowered by many other things besides failure to prepare the 
land early, but the importance of timely work and its necessity on a 
larger proportion of the acreage if the general average is to be in- 
creased can not be over emphasized. 
Bulletin 178 of the Nebraska Agricultural Experiment Station’ 
reporting results from the North Platte substation shows a much 
smaller increase from early-fall plowing than has been obtained at 
the Fort Hays branch station. 
A simultaneously prepared manuscript on winter wheat in western 
Nebraska by L. L. Zook, published as Bulletin 179 of the Nebraska 
Agricultural Experiment Station, reports results with winter wheat 
following winter wheat, corn, fallow, and green manure at the North 
Platte (Nebr.), Scottsbluff (Nebr.), Akron (Colo.), and Ardmore 
(S. Dak.) stations. While all of these stations show relatively small 
increases from early preparation where the crop follows winter wheat 
or other small grain, they also show marked increases in yield where 
it follows corn, green manure, or fallow. The relations between 
yields from continuous cropping to winter wheat and from other 
methods at these stations are similar to those obtaining between late 
plowing of continuously cropped ground and other methods at the 
Fort Hays branch station. 
These stations are farther north, at higher altitudes, and have less 
precipitation than Fort Hays. Harvest is later and frost and seeding 
areearlier. The growing period after harvest being shorter and drier 
than at Fort Hays, there is less opportunity for conducting an effec- 
tive fallow between harvest and seeding. On the other hand, the 
lower precipitation at these stations contributes to a greater response 
from the full fallow period. 
Kans. Agr. Exp. Sta. Bul. 206, 34p.,12pl.(intext). 1915. 
7 Zook ,L. L. Winter wheat seed-bed preparation. Nebr. Agr. Exp. Sta. Bul. 178, 16 p., 2 figs. 1921. 
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