Corn Investigations 
IT 
Furthermore, negative data which fail to show constructive 
improvement in productivity have often positive values in indi- 
cating practices which fail to promote desired results. Strictly 
technical investigations sometimes reveal quite unexpected prac- 
tical possibilities. 
TECHNIQUE OF THE FIELD PLAT YIELD DETERMINATIONS 
Since 1911, except where the nature of the experiment re- 
quired otherwise, the corn has been planted thick and thinned to 
the desired uniform rate. In the main, the corn rows have been 
Table 1 . — Annual acreage and yield of corn , wheat , and oats in 
Nebraska , 1890 to 1921. 
Crop 
Total acreage 
Yield per acre 
Acres 
Bushels 
NINE-YEAR PERIOD, 1890 TO 1898 
Corn . 
Wheat 
Oats . . 
5.419.000 
1.399.000 
1.482.000 
NINE-YEAR PERIOD, 1899 TO 1907 
Corn. . 
Wheat 
Oats . . 
6.256.000 
2.269.000 
1.970.000 
NINE-YEAR PERIOD, 1908 TO 1916 
Corn . . 
Wheat 
Oats . . 
6.530.000 
3.131.000 
2.219.000 
FIVE-YEAR PERIOD, 1917 TO 1921 
Corn. . 
Wheat 
Oats . . 
7.641.000 
3.321.000 
2.537.000 
20.5 
14.7 
24.9 
28.6 
18.1 
28.5 
25.7 
17.9 
27.6 
26.6 
14.0 
30.9 
FOUR-YEAR PERIOD, 1918 TO 1921 
Corn . . 
Wheat 
Oats . . 
7.240.000 
3.902.000 
2.412.000 
26.4 
14.0 
29.2 
Corn . 
Wheat 
Oats . . 
THIRTY-TWO YEAR PERIOD, 1890 TO 1921 
6,314,000 
2,431,000 
1,991,000 
25.2 
16.4 
27.6 
Due to the severe winterkilling of the 1917 crop, much of the wheat acreage 
was replanted to other crops. The 4-year average, 1918 to 1921, therefore 
represents more nearly a normal average of the various crops than does the 
1917-1921 average. These data are compiled from the annual reports of the 
Nebraska State Board of Agriculture. 
