28 Nebraska Agricultural Exp. Station, Research Bui. 13 
During 1914 and 1915 large and small wheat seeds were 
planted alternatingly in the row at the normal field rate of 
planting. Two varieties were used and reciprocated so that 
the results in Table 9 represent the mean of two varieties for 
each grade. This reciprocation eliminates largely the varietal 
effects in the summary. It was necessary to use two distinct 
varieties (a bearded and a beardless) so that the plants from 
each grade might be separated at harvest. The same grades 
were also compared separately in nursery blocks to establish 
the relative yields when free from competition. 
As an average for two varieties each of winter and spring 
wheat for two years, the small seed in competition yielded 
relatively 15 per cent too little grain, 20 per cent too little 
straw, and made 18 per cent too small total yield. 
Table 10 — Relative yields at the normal field rate of planting, 
of two varieties when grown alone in blocks, and when 
groivn in competition by alternation in the same 7^ow* 
Relative yields 
Grain 
Straw 
Total 
WINTER WHEAT, 1914 
Ratio Big Frame 
( Alone 
90:100 
88:100 
89:100 
to Turkey Red , 
. . . \ Competition . 
55:100 
70:100 
67:100 
SPRING WHEAT, 1914 
Ratio Scotch Fife 
1 Alone 
75:100 
93-100 
90:100 
to Marquis 
\ Competition . 
61:100 
90:100 
86:100 
WINTER WHEAT, 1915 
Ratio Big Frame 
f Alone 
82:100 
105:100 
99:100 
to Turkey Red. 
\ Competition . 
120:100 
128:100 
125:100 
SPRING WHEAT, 1915 
Ratio Scotch Fife 
/ Alone 
95:100 
114:100 
109:100 
to Marquis 
. . . . \ Competition . 
99:100 
125:100 
119:100 
*Compiled from data in Nebraska Research Bulletin No. 11, 1917. 
The results for different years should not be averaged in this variety 
test, since varieties do not have the same relative competitive qualities 
in different years. We are interested here in what may happen any one 
year and not in an average of years. 
In similar manner, competition between two varieties 
planted within the same row was determined. Plants from 
each variety could be separated at harvest by the presence 
or absence of beards. The relative yields were also obtained 
in nursery blocks free from competition by harvesting the 
