POTATO-GEOWING EXPEKIMENTS. 
291 
TABLE No. 1. 
The Effects of Artificial Manures alone, and of Farmyard 
Manure alone, upon the Yield. 
Variety, ' British Queen.' 
Yield per acre 
acre 
Saleable 
Small 
Diseased 
Total 
Increase 
Net gain 
!No manure .... 
T. C. 
5 0 
CWT. 
2^ 
CWT. 
T. C. 
6 4i 
T. C. 
£ s. d. 
3 cwt. superphosphate 
1 cwt. sulpliate of ammonia S 
1 cwt. muriate of potash . J 
11 6| 
39 
13 ^ 
7 1 
18 4 3 
No manure .... 
24|- 
6 ^ 
15 tons farmyard manure 
14 12f 
30i 
16 3 
9 18^ 
24 14 0 
15 tons farmyard manure 
14 12| 
30^ 
If 3 
2 17| 
6 10 3 
3 cwt. superphosphate ."j 
1 cwt. sulphate of ammonia |> 
1 cwt. muriate of potash . J 
11 6i 
39 
13 5i 
Variety, * Hough Giant. 
Yield per acre 
Manures applied 
Saleable 
Small 
Diseased 
Total 
Increase 
Neb gain 
No manure .... 
T. 
8 
C. 
H 
CWT. 
H 
CWT. 
n 
T. 
8 
C. 
15i 
T. C. 
£ s. d. 
3 cwt. superphosphate ."j 
1 cwt. sulphate of ammonia ^ 
1 cwt. muriate of potash . J 
11 
n 
11 
16i 
3 H 
7 8 6 
No manure .... 
8 
H 
8 
151 
15 tons farmyard manure 
14 
17 
0 
16 
5i 
7 10 
16 1 0 
15 tons farmyard manure 
14 
17 
20 
16 
4 8| 
8 12 6 
3 cwt. superphosphate . ~| 
1 cwt. sulphate of ammonia J- 
1 cwt. muriate of potash . J 
11 
2| 
10| 
3.^ 
11 
16| 
The objects were : — 
Table No. 1. — To test the effect of farmyard manure alone, compared 
with no manure and artificial manures alone. 
