266 Bejjort on Expe^'iments conducted in 1887 fey 
Cost per 
Plot 
Manures per acre 
Mangolds 
per 
Increase of crop 
over dunged 
Cost per 
acre for 
ton of in- 
creased 
laud 
artificials 
yield of 
mangolds 
tons cwt. qrs 
lbs. 
tons cwt. qrs. lbs. 
£ s. 
d. 
& s. d. 
F 
12 tons dung, no artificials 
11 
17 
3 
24 
J 
f 12 tons dung, 3 cwt. super- 
} 
10 
9 
1 
24 
none 
0 8 
3 

D 
/ 12 tons dung, 2 cwt. nitrate 
' 12 tons dung, 3 cwt. super- 
} 
V 
14 
1 
3 
16 
2 
3 
3 
20 
1 1 
6 
0 9 10 
C 
phosphate, 2 cwt. nitrate 
} 
15 
12 
2 
24 
3 
14 
3 
0 
I 9 
9 
0 8 0 
M 
( 12 tons dung, 4 cwt. nitrate 
/ 1 *? trine: flnnty ^ o\xr^, QntiPT*- 
} 
14 
5 
0 
24 
2 
7 
1 
0 
2 3 
0 
0 18 2 
L 
J phosphate, 4 cwt. nitrate 
[ of soda - , 
) 
15 
5 
• 
3 
g 
3 
7 
3 
12 
2 11 
3 
0 15 0 
K 
cinder, 4 cwt. nitrate of 
[ 
14 
18 
0 
24 
3 
0 
1 
0 
2 10 
0 
0 16 8 
}j 
12 tons dung, 2 cwt. guano 
14 
1 
0 
24 
2 
3 
1 
0 
0 14 
6 
0 A Q 
V O t7 
E 
1 12 tons dung, 2 cwt. guano, 
1 2 cwt. nitrate of soda 
1 
14 
11 
3 
4 
2 
13 
3 
8 
1 16 
0 
0 13 4 
12 tons dung, 4 cwt. guano, 
16 
4 
3 
12 
4 
6 
3 
16 
1 9 
0 
0 G 8 
H 
1 12 tons dung, 4 cwt. guano, i 
t 2 cwt. nitrate of soda . i 
18 
4 
0 
12 
6 
6 
0 
16 
1 16 
0 
0 6 9 
I 
f 12 tons dung, 4 cwt. guano, 
t 4 cwt. nitrate of soda . 
\ 
18 
19 
2 
12 
7 
1 
2 
16 
3 12 
0 
0 10 2 
Increase over uu- 
uiauured land 
A 
0 
No dung, no artificials i 
Ditto ditto 1 
{ 
9 
18 
0 
4 
— 
R 
j No dung, 4 cwt. nitrate of 
\ 
13 
6 
2 
16 
3 
8 
2 
12 
2 3 
0 
0 12 6 
N 
f No dung, 4 cwt. basic cin- 
1 der, 4 cwt. nitrate of soda 
No dung, 3 cwt. superphos-^ 
\ 
12 
7 
2 
20 
2 
9 
2 
16 
2 10 
0 
10 2 
P 
phate, 4 cwt. nitrate of 
16 
19 
2 
16 
7 
1 
2 
12 
2 11 
3 
0 7 3 
Q 
(No dung, 6 cwt. guano, 4) 
1 cwt. nitrate of soda . . J 
18 
18 
0 
0 
8 
19 
3 
24 
4 6 
6 
0 9 7 
estimated cost being SI. per acre, or 30s. per ton of increased 
crop. It is probable that, as last year, superphosphate added to 
dung did no good, though I must regard as accidental the lower 
yield of plot J as compared with F. In last year's experiments 
the produce was nearly identical on both plots. A comparison 
of plots D and C, as also of E, and P, would lead to a conclusion 
favourable to the use of superphosphate, at least when used with 
nitrogenous manures. Nitrate of soda, 2 cwt. per acre, would 
appear to have produced about 2 tons additional crop, and 4 cwt. 
nitrate of soda to have been more effectual than 12 tons of dung. 
Basic cinder proved inferior to superphosphate ; but the results 
obtained with guano were decidedly satisfactory, 2 cwt. per 
