54 Nebraska Agricultural Exp. Station , Research Bui. 20 
in Table 14 have been grown continuously thru a period of four 
years, 1013-1917. The results with these are shown in Table 15. 
As a four-year average for the eight hybrids, the yield of the 
original corn was exceeded by 17 per cent, while the highest 
yielding combination (12x2) yielded 29 per cent more grain 
than the original variety. In this connection attention may be 
called to the fact that the original Hogue’s Yellow Dent has 
never been subjected to any degree of close breeding and is one 
of the highest yielding varieties ever grown at the Experiment 
Station. Detailed notes were taken for some of the plant char- 
acters in addition to the yield during 1915 and 1916. Compared 
with the original the eight hybrids ripened two days earlier on 
an average, were four inches shorter, and had 24 suckers and 2 
barren stalks fewer per 100 plants. The leaf area was 13 per 
cent smaller, the shelling percentage 4 per cent higher, and the 
grain yield 10 per cent greater. 
Fig. 15. — A field of mature Fj hybrids between pure lines of Hogue’s 
Yellow Dent (Class IX). The center row and second row to the 
right show the inherited tendency to lodge imparted by pure line 
No. 5. See Table 14. 
