Nebraska Agricultural Exp. Station, Research Bui. IS 
Ratio of i 
Col. 10 to 
Col. 9 1 
I )eviati()n 
of Kfoup 
mean from 
field mean* 
Probable 
error of 
mean 
1 
(8) 
Bushels 
6.045 
5.490 
4.304 
3.091 
4.944 
4.925 
4.266 
2.756 
1.576 
7.174 
3.790 
3.443 
3.881 
3.797 
2.465 
2.424 
5.084 
6.168 
6.319 
5.518 
3.990 
5.096 
1.794 
3.183 
3.526 
(7) 
Bushels 
4.925 
5.275 
3.650 
2.475 
4.775 
4.700 
3.375 
2.675 
1.525 
6.425 
3.200 
3.300 
3.350 
3.050 
2.350 
2.000 
4.050 
6.000 
5.275 
4.325 
3.400 
4.900 
1.525 
2.475 
3.050 
Mean yield 
per acre 
(6) 
Bushels 
75.5 
79.1 
84.3 
80.9 
78.6 
78.8 
81.7 
82.4 
78.2 
77.5 
80.8 
80.4 
82.4 
80.4 
77.8 
78.1 
77.3 
76.3 
78.4 
79.8 
83.3 
81.8 
79.5 
80.0 
76.9 
1 
1 
1 
i 
i 
mimmimiMmmm 
d 
! 1 
