30 
BULLETIN 157, U. S. DEPARTMENT OF AGRICULTURE. 
Table XI. — Annual and average yields of winter wheat drilled in the ordinary manner 
and cross drilled at the Nephi substation, for the years 1909 to 1913, inclusive. 1 
Yield per acre of grain (bushels). 
Method and rate of drilling. 
1909 
1910 
1911 
1912 
1913 
Average. 
5 years. 
4 years. 
Ordinary drilling at 3 pecks per acre 
M.07 
3.50 
16.60 
22.30 
16.30 
17.10 
17.60 
5.17 
6.00 
5.34 
12.89 
14.36 
15.09 
Cross drilling, 1.5 pecks per acre each way 
Cross drilling, 3 pecks per acre each way 
18.50 
17.80 
26.70 
28.80 
17.08 
17.39 
1 The Koffoid variety was used in 1909, while the Turkey was used from 1910 to 1913, inclusive. 
2 Average of seven check plats. 
Table XI shows that the difference between the yields of the cross- 
drilled plats and those drilled in the ordinary manner, both seeded at 
the rate of 3 pecks per acre, is very small, almost insignificant when 
the comparative cost of seeding is considered. It is not known 
whether the difference in yield favoring the cross-drilled plats is 
caused by cross drilling or hx a possible increase in the rate of seed- 
ing which may have occurred owing to the double seeding, i. e., the 
drill may have seeded more than 3 pecks when set to sow 1.5 pecks 
each way of the plat. It is believed that the increase in the rate of 
seeding is responsible for the higher yield of the plats seeded at 6 
pecks per acre, since these results agree with those of the rate-of- 
seeding tests with winter wheat. 
Rate of Seeding Winter Wheat. 
Rate-of-seeding tests with winter wheat were conducted at Nephi 
for the three years from 1909 to 1911, inclusive, and they were 
repeated in 1913. There was no test of this kind in 1912. In each 
year six different rates of seeding were used, namely, 2, 2.5, 3, 4, 5, 
and 6 pecks per acre. All plats in the test were treated uniformly in 
every way except as to the rate of seeding. The annual and average 
yields in bushels per acre obtained are presented in Table XII. 
Table XII. — Annual and average yields of winter wheat in the rate-of-seeding test at the 
Nephi substation in 1909, 1910, 1911, and 1913} 
Yield per acre of grain (bushels). 
Rate of seeding per acre. 
1909 
1910 
1911 
1913 
Average. 
4 years. 
3 years 
(1910,1911, 
and 1913). 
4.16 
16.00 
15.30 
19.30 
19.30 
19.30 
17.00 
23.50 
28.50 
21.30 
28.70 
33.70 
30.30 
Failure. 
Failure. 
2.67 
3.00 
2.83 
3.00 
10.92 
"i4."69' 
15.16 
13.16 
13.17 
14.60 
14.42 
7.75 
4.80 
2.33 
17.00 
5 pecks 
18.61 
16.77 
The Koffoid variety was used in 1909, while the Turkey was used in 1910, 1911, and 1913. 
