6 Nebraska Agricultural Exp. Station, Research Bui. 13 
5. In 1913 in alternating single-row test plats of Burt 
and Kherson oats, the Burt yielded relatively 16 per cent too 
high, while in 1914 the yield was relatively 37.6 per cent too 
high, due to plat competition. 
In 1913, competition with Kherson oats in alternating one- 
row plats caused Swedish Select oats to yield relatively 7 
per cent too high, while in 1914 its yield was relatively 4.3 
per cent too low. 
6. When large and small seeds of wheat were planted in 
competition in the same row, the small seed, as a result of 
competition, yielded relatively 15 per cent too little grain, 
20 per cent too little straw, and made 18 per cent too small 
total yield. 
Similar competition was found between varieties of wheat 
planted in the same row. 
7. In a single-row test of 80 strains of Turkey Red 
wheat grown in the same order each of four years, there are 
evidences of plat competition between strains. As an aver- 
age for four years, the poorest strain. No. 75, grew between 
strains No. 74 and No. 76, ranking one and five. A special 
test of these three strains in 1915 and 1916 disclosed that 
strains No. 74 and No. 76 were favored 20 and 15 per cent 
respectively thru competition with a less vigorous strain. 
8. In a rate-of-planting test with Nebraska White Prize 
corn, — in which two rates of planting, namely two and four 
plants per hill, were compared in alternating single row plats, 
— the thin rate yielded relatively 29.3 per cent too low in 
1914 because of plat competition. In 1915 the thin rate 
yielded 9 per cent too low because of plat competition. In 
1916 such competition caused the thin rate to yield relatively 
16.1 per cent too low. 
9. A large, medium, and small variety of corn were 
grown in plat competition studies during 1912 and 1914. 
These varieties were Hogue's Yellow Dent, University No. 3, 
and Pride of the North, respectively. In 1912, Pride of the 
North yielded 85 per cent as much as Hogue's Yellow Dent 
in alternating three-row plats, while it yielded 66 per cent 
as much in alternating single rows. When compared in the 
same hill by the intra-hill method, the Pride of the North 
yielded only 47 per cent as much as Hogue's Yellow Dent. 
Due to competition, the Pride of the North yielded relatively 
44.7 per cent too low when compared in the same hill, and 
22 per cent too low in alternating one-row plats. 
