20 
BULLETIN 1377, U. S. DEPARTMENT OF AGRICULTURE 
Table 9. — Comparable yields of oats in the 6-year rotation and in continuous 
culture, Missouri 
[Yields in bushels per acre] 
6-year rotation (corn, oats, wheat, clover, timothy, timothy) Continuous 
Year 
No fer- 
tilizer, 
plot 13 
Farm manure 
No fer- 
tilizer, 
plot 16 
Farm 
Plot 11 
Plot 12 
Plot 14 
Plot 19 
Plot 20 
A verage 
or sum- 
mary 
ma- 
nure, 
plot 15 
1893 
21.9 
32.8 
16.7 
13.8 
51.1 
27.8 
36.7 
28.0 
18.5 
27.8 
36 7 
17.8 
13.4 
7.3 
5.0 
53.7 
30.6 
27 3 
1899 
1905 .. 
28.0 
90 1 
19 1 
1911 
17.4 
24.0 
22.5 
17.9 
26.1 
65 1 
1917 
60. S 60. 5 
5-year average. 
27.3 
34.6 
19.5 
33.6 
Table 10. — Comparable yields of wheat in the 6-year rotation and in continuous 
culture, Missouri 
[Yields in bushels per acre] 
6-year rotation (corn, oats, wheat, 
clover, timothy, timothy) 
Continuous culture 
Year 
1 
Farm manure 
o 
a 
|« 
Farm manure 
.- co 
a 3 
o >» 
E^ 
s& 
a u " 
3 
m 
2 
8 
i§ 
3 
fi$ 
>o 
o 
<N 
Si 
o 
CO 
o 
CO 
MS 
S.H 
*a 
1 

o 
c 
PL, 
s 
S 
sU 
1 
O 
o 
O 
O 
o 
o 
o 
^3 
1889 
6.5 
17.7 
16.2 
16.2 
8.2 
20.6 
8.1 
15.0 
11.8 
17.0 
20.9 
23.0 
16.0 
1895 - 
33.0 
38.7 
44.0 


44.0 
22.0 
39.3 
34.3 
40.7 
43.3 
39.2 
41.3 
33.0 
38.6 
1901 
39.3 
43. :-! 
4:13 
43. 3 
15.6 
28.7 
23.3 
25.2 
24.1 
23.6 
28.5 
27.2 
25. 3 
1907 
10.8 
24.1 
28. 1 

7.1 
27.9 
17. 1 
10.8 
24.1 
23.1 
11.4 
24.8 
18.6 
1912. 
14.0 
22.0 
22.5 
23.3 
22.0 
16.1 
21.0 
1.3 
7.7 
12.6 
12.5 
12.1 
10.7 
12.0 
10.0 
11.7 
1918 
16.8 
34.2 
34.3 
34.3 
21.0 
34.3 
30.3 
30.3 
6-year average. 
20.1 
30.0 
30.9 12.fi 
26.4 
23.4 
1 The annual application of complete chemical fertilizer for wheat on plots 2 and 3 are the same. (See 
Table 22.) 
Table 11. — Comparable yields of timothy in the 6-year rotation and in continuous 
culture, Missouri 
[Yields in pounds per acre] 
6-year rotation (corn, oats, wheat, clover, timothy, timothy) 
Continuous culture 
Year 
No fer- 
tilizer, 
plot 13 
Farm manure 
No fer- 
tilizer, 
plot 23 
Farm 
Plot 11 
Plot 12 
Plot 19 
Plot 20 
Average 
or sum- 
mary 
manure, 
plot 22 
1890 
1,790 
3,920 
1,900 
4,600 
130 
3,536 
2,820 
124 
3,192 
3,120 
6,860 
4,690 
5,040 
4,283 
6,860 
5,000 
6,700 
2,167 
7,493 
8,320 
766 
6,818 
2,290 
4,760 
2,480 
2,400 
4,500 
3,650 
2,146 
546 
3,276 
5,790 
1891 .. 
7,600 
1896 
5,000 
5,840 
1897 
6,700 
2,750 
7,398 
8,320 
6,100 
1902 
1,750 
7,840 
2,000 
7,240 
5,700 
1908 
7,812 
1909 
6,032 
1914 
766 
6,818 
889 
1915 
6,888 
2,446 
5,379 
2,894 
5,850 
