The Regional Adaptation of Corn in Nebraska 
19 
the Sand Hills Area of north and west central Nebraska there 
is probably justification for the belief that the type of soil 
found there is more resistant to atmospheric evaporation of soil 
moisture than are the heavier soils elsewhere. 
SOIL FERTILITY 
Regionally, with the exception of much of the Sand Hills 
Area and north and west central Nebraska, the soils of this 
State that are not subject to serious erosion are fertile, and the 
regional adaptation of corn is probably not greatly influenced 
by difference in soil fertility. The accompanying soil map by 
Condra indicates the general soil areas found. 
Table 4. — Precipitation During Five Spring and Summer 
Months in Regions Where Corn Adaptation Studies Were 
Located. 1916. 
Location 
Precipitation 
April 
May 
June 
July 
August 
Total 
County 
(1) 
Inches 
1 (2) 
Inches 
(3) 
Inches 
(4) 
Inches 
(5) 
Inches 
(6) 
Inches 
(7) 
EASTERN NEBRASKA 
Richardson 1 
1 3.09 
8.24 
2.64 
2.73 
6.72 
23.42 
Cass 
2.21 
4.60 
4.33 
.73 
7.01 
18.88 
Thurston 
.73 
5.16 
3.07 
.83 
3.71 
13.50 
Lancaster 
2.69 
3.48 
3.11 
1.29 
6.70 
17.27 
Nuckolls 
2.08 
4.30 
3.45 
.35 
1.67 
11.85 
Average 
, 2.16 
5.16 
3.32 
1.19 
5.16 
16.98 
CENTRAL NEBRASKA 
Kearney 
3.78 
3.13 
3.66 
.92 
6.85 
18.34 
Holt 
.80 
4.25 
3.28 
.90 
2.18 
11.41 
Lincoln 
.72 
1.95 
3.09 
.59 
2.35 
8.70 
Cherry 
.59 
3.42 
3.15 
1.95 
4.45 
13.56 
Average 
1.47 
3.19 
3.29 
1.09 
3.96 
13.00 
WESTERN NEBRASKA 
Grant 
.49 
2.15 
2.32 
2.77 
3.40 
11.13 
Dawes 
1.15 
4.97 
3.44 
2.38 
.82 
12.76 
Kimball 
1.07 
3.70 
.93 
2.75 
1.61 
10.06 
Average 
.90 
3.61 
2.23 
2.63 
1.94 
11.32 
SUMMARY OF CONDITIONS WHERE CORN TYPES WERE STUDIED- 7 
NORMAL REGIONAL DIFFERENCES 
The approximate normal environmental differences between' 
the various localities where the following corn type survey was 
