by Local Af/ricultural Societies. 
385 
farmyard manure, the most economical to use for wheat. The trials 
were carried out at Cawston, at Flitcham, and at Bolwick. The 
Cawston land is a very poor, light, surface-soil of some 5 to 6 
inches in depth, upon a sandy subsoil ; that of Flitcham, a thin, 
light, and hungry top-soil, upon the Upper Chalk ; that of Bolwick 
a deep and rich loam, resting upon a white and sandy subsoil. 
The following table gives the most prominent results obtained 
in 1889. 
Wheat after Rotation Seeds, 1889. 
Produce per acre 
riot 
Manures per acre 
Place of experi- 
meut 
Head-corn 
Straw 

bushels 
cwt. 
qr. 
11). 
f 
Cawston . . 
2218 
21 
0 
13 
1 
?)olwick . . 
3.5-46 
30 
0 
10 
I 
Flitcham . . 
27-50 
20 
0 
10 
(4 cwt. rape-cake (sown in 
Cawston . . 
26-29 
28 
2 
2 
2 
f 
Bolwick . . 
40-62 
33 
3 
20 
Flitcham . . 
27-96 
23 
1 
26 
4 
. 1 cwt. muriate of potash (sown 
in autumn) 
\ 
Flitcham . . 
34-53 
30 
0 
10 
2 cwt. superphosphate .... 
Cawston . . 
30-62 
34 
0 
12 
5 
1 cwt. muriate of potash (sown 
in autumn) 
/4 cwt. rape-cake (sown ini 
9 
autumn) 
Flitcham . . 
29-21 
23 
2 
8 
j 1 cwt. nitrate of soda (sown in 
( spring) , 
1 
14 
Flitcham . . 
37-96 
28 
2 
8 
The wheat at Cawston in no case gave a profit from the manures, 
although the season could scarcely be called unfavourable for such 
land. No manure proved thus the most economical of all. 
The highest yield (nearly 31 bushels per acre), and the best 
quality of grain, were obtained from 4 cwt. rape-cake, 2 cwt. 
superphosphate, and 1 cwt. of muriate of potasli (plot 5). 
At Bolwick, with the exception only of the unmanured plots, and 
those which received either superphosphate or potash, or both of 
these minerals, the whole of the plots were levelled with tlie ground 
before the wheat was ripe. In no case did the increase of produce 
warrant the expenditure on the manures. 
At Flitcham, as usual, the most notable results were obtained 
from applications of potash. Thus, whilst 4 cwt. of rape-cake 
alone gave 28 bushels of grain, and the same rape-cake with nitrate of 
soda and sulphate of ammonia 29 and 28 busliels respectively, the 
addition of 1 cwt. of muriate of potash to the rape-cake, whether 
with or without a dressing of superphosphate, produced 34 bushels 
per acre of wlieat. Or, in other words, 1 cwt. of muriate of potash, 
costing 8s. 6c?., judiciously applied, increased the yield of wheat by 
