11 (J Report of Experiments on the Growth of Wheat. 
Table VIII. — Summary of the Results of the Eighth Season, 1850-51. 
!_ 
Manures. 
(Quantities per Acre.) 
Unmanured (Plot 3) I 
14 tons Farmyard Manure (Plot 2) ] 
Mineral Manure alone; mean of 2 experiments I 
(Plots 0 and 1) J 
400 lbs. Aiumonia-salts (equal parts Sulphate) 
and Muriate), Plot 10a j 
200 lbs. Ammonia-salts (equal parts Sulphate'! 
and Muriate), and Mineral Manure (Plot 86) / 
400 lbs. Ammonia-salts (equal parts Sulphate] 
and Muriate), and Mineral Manure : mean of I 
12 experiments (Plots 6a, 66, 11a, 116, 12a, | 
126, 13u, 136, 14a, 146, 17c, and 176) .. ..J 
G00 lbs. Ammonia-salts (equal parts Sulphate 
and Muriate), and Mineral Manure ; mean of 
4 experiments (Plots 5a, 56, 16a, and 166) .. 
400 lbs. Ammonia-salts (equal parts Sulphate and 
Muriate), Mineral Manure, and 1000 lbs. Kape- 
cake ; mean of 2 experiments (Plots 7a and 76) 
Pnonucii FEU Acke, &c. 
Dressed Coin. 
Total 
Corn. 
Straw 
and 
Chaff. 
Quantity. 
Weight 
per 
Bushel. 
Bush. Pks. 
lbs. 
lbs. 
llw. 
15 3J 
61-1 
1083 
1627 
29 21 
63*6 
2049 
3094 
18 2j 
61-8 
1274 
1854 
28 3A 
61-9 
I960 
27 2i 
62-6 
1863 
2830 
.31 2J 
62-8 
2155 
3511 
.30 31 
63-4 
2521 
4248 
37 0J 
63-0 
M 4 
2528 
4444 
mental field agreed with the estimates of the wheat-crop over the 
country generally, in showing the order of the highest grain- 
yielding quality of the three seasons to have been 1849, 1851, 
1850, and that of the highest straw-producing character to have 
been, on the other hand, 1851, 1850, and 1849. The amount of 
produce, both corn and straw, was, however, below the average 
of the 20 years of experiment ; though the proportion of corn to 
straw was fully equal, and the weight per bushel of the grain 
considerably above the average, these favourable characters being 
doubtless due to the prevailing dry weather during the maturing 
and harvest periods. 
The season was, upon the whole, pretty favourable for the 
action of nitrogenous manures, the difference between the produce 
by ammonia-salts when used alone, and in conjunction with mi- 
neral manures, being less than frequently ; whilst 600 lbs. of 
ammonia-salts (with mineral manure), though an excessive 
amount for the average of seasons, gave not very far short of the 
same amount of increase of corn for a given quantity of ammonia 
employed as when only 400 lbs. were used. Both these amounts, 
however, gave proportionally much less increase than only 
200 lbs. 
