Report of Experiments on the Growth of Wheat. 131 
owing to the heavy rains of June, and the bulk of the crop, it was 
generally much laid. Still, the prospect before harvest was upon 
the whole good ; but the wet and stormy harvest period, and the 
length of time the crop was out, led to a good deal of injury, 
especially to the heavier crops, and when got in the yield was 
estimated to be below the average. 
The following results were obtained in the experimental 
field :— 
Table XVI.— Summary of the Results of the Sixteenth Season, 1858-9. 
Manures. 
(Quantities per Acre.) 
Produce per Acre, &c. 
Dressed Com. 
Total 
Corn. 
Straw 
and 
Chaff. 
Quantity. 
Weight 
per 
Bushel. 
400 lbs. Ammonia-salts alone (Plot 10a) .. 
Mixed Mineral Manure alone (mean of Plots 5a) 
Mixed Mineral Manure, and 100 lbs. Ammonia-V 
Mixed Mineral Manure, and 200 lbs. Ammonia-V 
Mixed Mineral Manure, and 400 lbs. Ammonia-V 
Mixed Mineral Manure, and 600 lbs. Ammonia-V 
Mixed Mineral Manure, and 800 lbs. Ammonia-V 
1 
Bush. Pks. 
18 H 
36 Of 
18 3| 
20 2 V 
25 1 
29 3i 
34 21 
34 2 
34 2f 
lbs. 
52- 5 
56-5 
51-5 
56-0 
54- 5 
56-5 
55- 9 
53- 7 
52'6 
lbs. 
1051 
3263 
1207 
1275 
1499 
1832 
2093 
2038 
2016 
lbs. 
2175 
4810 
2730 
2358 
3083 
3800 
4740 
5475 
5860 
The experimental crops were more 1 than usually bulky wherever 
the manuring was liberal. With the smaller amounts of am- 
monia-salts (and mineral manure), the quantity of grain .per acre 
was also slightly above the average ; but with the heavy dressings 
of ammonia there was a considerable deficiency of corn, and a 
very undue proportion of straw. The weight per bushel of dressed 
corn was extremely low, though considerably lower with deficient 
mineral, or excessive nitrogenous manuring. There was less corn 
by ammonia-salts alone than by mixed mineral manure alone ; 
and even when the ammonia-salts were used in conjunction with 
mineral manure, there was less corn, though a good deal more 
straw, from the use of the excessive amounts of 600 lbs. and 
800 lbs., than when only 400 lbs. were employed. 
It may be observed that this was the first of the years in which 
there was a reduction of potass and soda in all, and of magnesia 
in some of the cases, where these bases were formerly supplied. 
K 2 
