386 
Field Experiments conducted in 1889 and 1890 
6 bushels per acre. Farmyard manure, too, hereliad much better suc- 
cess than at the other stations. At all three stations, in 1889, much 
more markedly than in 1888, the rape-cake proved itself a safer 
medium for the application of the requisite nitrogen than the more 
soluble nitrogenous manures. 
The main results obtained in 1890 were :— 
Wheat after Rotation Seeds, 1890. 
Plot 
Manures per acre 
Place of 
experiment 
Produce per acre 
Head-corn 
Straw 
1 
2 
3 
j4 cwt. rape-cake (so-mi inj 
1 cwt. sulphate of ammonia . -j 
Cawston . . 
Bolwick . . 
Flitcham . . 
Cawston . , 
Bohvick . . 
Flitcham , . 
Cawston . . 
Flitcham . . 
bushels 
26-87 
31-40 
25-93 
30- 31 
34-37 
28-59 
2906 
31- 56 
cwt. qr. lb. 
29 1 4 
27 0 21 
23 3 20 
30 2 4 
30 0 0 
26 1 0 
30 3 16 
31 0 8 
At Cawston the wheat stood up well, but both at Flitcham 
and Bohvick it was much beaten down. Here the best 
money return was from using simply 1 cwt. per acre of sulphate of 
ammonia. Rape-cake gave the same increase, but at a higher cost. 
The land at Bolwick gave evidence of the beneficial use of mineral 
manures, but in no case was there an adequate return for the 
money. At Flitcham similar results to those at Cawston were 
obtained, an outlay of 12s. for 1 cwt. per acre of sulphate of 
ammonia producing an increase of 5 bushels of wheat and 7 cwt. 
of straw per acre. 
Experiments to test the Value upon Wheat after Rotation Seeds of 
the unexhausted residue of Manures ajyjMed for Mangel in 
1886, no Manure having been applied since that date. (Whit- 
lingham Farm.) 
Plot 
Manures per acre applied to 
Mangel in 1886 
Produce per acre, 1889 * 
Head-corn 
Straw 
1 
2 
6 
20 loads dung . . ... 
/lO loads dung "1 
1^ 2 cwt. nitrate of soda . . . j 
r 4 cwt. superphosphate . . A 
< 2 „ nitrate of soda . . . J> 
I. 3 ,, common salt ... .J 
bushels 
33-75 
3312 
32-34 
cwt. qr. lb. 
33 0 24 
30 0 10 
31 0 18 
When, in 1886, the very large dressing of twenty loads of dung 
was applied to Plot 1 for mangel, but without giving a return in 
the yield of roots at all adequate to the supplies of plant-food thus 
