24 BULLETIN" 336, U. S. DEPARTMENT OF AGRICULTURE. 
Table VI shows that two of the three pure lines of Fultz have 
given higher average yields for the four years than the original stock, 
one of them exceeding the original variety by nearly 2 bushels. The 
mixture of good pure lines has also exceeded the unselected original 
stock in average yield by about 1 bushel. In the one year (1911) 
when comparable yields of unselected Currell were obtained, two of 
the selections and the mixture of pure lines exceeded the original 
stock in yield. For the four years, the two pure lines which have 
been continued exceeded the mixture of pure lines by about one-half 
bushel. They have also exceeded the original stock, but, as previously 
stated, these yields are not really comparable. 
From these results it appears that slight gains in yield are to be 
obtained by the selection of pure lines, even though, as in the present 
case, the original varieties apparently are quite pure. 
RATE-OF-SEEDING TEST. 
A test to determine the best rate of seeding for wheat was begun 
at Arlington Farm in 1 91 1 . Three varieties, Dietz (Dietz Longberry) , 
Fultz, and Fulcaster (Acme), were sown at the rates of 4, 5, and 6 
pecks each. In 1912 five additional varieties, Stoner, Martin Amber, 
Missouri Bluestem, Kharkof, and Purple Straw (C. I. No. 1957), were 
added to the test, the rates of seeding being the same as in the pre- 
vious year. In 1913 and 1914 only four varieties, Dietz, Fultz, 
Stoner, and Martin Amber, were included; but the rates of seeding 
were increased to include 2, 3, 7, and 8 pecks. In 1911 and 1912 
single twentieth-acre plats of each variety at each rate were sown. 
In 1913 and 1914 the tests were conducted in duplicate on fortieth- 
acre plats. The yields of grain from each variety at the different 
rates of seeding are shown in Table VII. 
Table VII shows that the highest yield of the Dietz wheat for the 
four years from 1911 to 1914 was obtained from the 4-peck rate of 
seeding and the highest yield of the Fultz from the 5-peck rate. Only 
the 4, 5, and 6 peck rates were included in the test during all the years. 
The Stoner and Martin Amber wheats were sown at the 4, 5, and 6 
peck rates in the three years from 1912 to 1914= Both these varieties 
have given slightly higher yields from the 4-peck rate than from either 
the 5-peck or 6-peck rate. The other varieties which were grown 
only in 1911 and 1912 vary but slightly in yield from the different 
rates of seeding. 
The average for all varieties which have been grown at the 4, 5, and 
6 peck rates from 1911 to 1914 shows a yield of 28.75 bushels from 
the 4-peck rate, 27.86 bushels from the 5-peck rate, and 26.45 bushels 
from the 6-peck rate. When the yields are shown on a strictly com- 
parable basis by subtracting the quantity sown in each case from the 
average yield, the advantage of the lower rate is stdl further increased. 
The net average yield from the 4-peck rate is 27.75 bushels; from the 
5-peck rate, 26.61 bushels; and from the 6-peck rate, 24.95 bushels. 
