28 
Keport of the Director of the 
In C we had adjoining plate, apparently in like condition in 1884, at 
the commencement of the trials; in 1886 F 4 yielding about twelve 
bushels per acre the less, and in 1887 about twenty-two bushels per 
acre 'the more; a variation of about two' bushels per acre between the 
two years for F 3, and a variation of about thirty -two bushels per acre 
for F 4. 
In F Series we note great variation in crop in 188G, and nearly identi- 
cal crop in 1887, although more fertility must have been left in the soil 
of F 9 in 1876 than in F 7. 
In O we had corn in 1886 under different methods of planting, and 
it is evident that less fertility was removed with the crop of F 18, in 
1886, than with the crop of F 17. Yet in 1887, with potatoes, F 18 
yielded about forty-nine bushels per acre less than F 17. 
In F 19 we had a plat of like history with F 17 and 18, with the 
exception that no fertilizer was applied to the wheat of 1885. The 
yield of potatoes in 1887 was 377.5 pounds, merchantable, and 43.7 
pounds unmerchantable. We notice here that while F 18 yielded 
about 104 bushels per acre, F 19, with less fertilizer in the rotation, 
and the same rotation, yielded about 126 bushels per acre, or 22 bushels 
per acre more. 
Overlooking the rotations from 1884 to 1887, and considering only 
the fertilizer and manure applied, we can average our series and yields 
as below, calculated to acre areas : 
flat. 
fl. 
F II 
F 19 
F 7 
F 8, 
F 9, 
F 10 
F 12 
F 14 
F 15 
F 5 
F 6 
F 16 
F 17 
F 18 
F 21 
F 3 
F 4 
F 2 
F 13 
F 20 
Fertilizer in the rotation. 
YIELD PEE ACRE, BUS., 
1887. 
400 lbs. fertilizer 
400 lbs. fertilizer 
400 lbs. fertilizer 
400 lbs. fertilizer and manure 
400 lbs. fertilizer and manure 
400 lbs. fertilizer and manure 
400 lbs. fertilizer and manure 
400 lbs. fertilizer and manure 
400 lbs. fertilizer and 960 lbs. muriate potash 
400 lbs. fertilizer and 1,120 lbs. sulph. potash 
800 lbs. fertilizer 
800 lbs. fertilizer 
800 lbs. fertilizer 
800 lbs. fertilizer 
800 lbs. fertilizer 
800 lbs. fertilizer 
800 lbs. fertilizer and manure 
800 lbs. fertilizer and manure 
1,200 lbs. fertilizer 
1,400 lbs. fertilizer 
1,400 lbs. fertilizer 
Mereh. 
Unmerch. 
148.9 
9.6 
116.6 
9.6 
125.8 
14.6 
140.6 
8.7 
180.9 
9.4 
141.0 
8.2 
159.1 
13.3 
143.3 
6.6 
118.4 
12.0 
101.9 
8.7 
126.2 
7.6 
117.7 
8.1 
116.6 
7.7 
153.1 
7.8 
104.1 
11.2 
80.4 
9.0 
140.8 
11.2 
163.3 
6.9 
92.3 
12.4 
149.0 
5.4 
91.9 
10.1 
