326 [ ASSEMBLY 
lows: The average of two samples from the irrigated row showed 
10.9 per cent, of solid matter; while the same from the row not 
irrigated showed 12.798 per cent of solid matter. The difference 
shows therefore very nearly two per cent of solid matter in favor of 
the rows not irrigated. 
ToBacco. 
An Haperiment with Fertilizers. 
We desired to test the influence of certain fertilizers upon the 
growth of the tobacco plant, and upon the burning quality of the 
leaf. For this purpose we selected a piece of ground that had been 
in sod, and had received no fertilizer of any kind since the establish- 
ment of the Station. 
We desired to compare especially the influence of chloride, 
(muriate) and the sulphate of potash upon the burning quality of the 
leaf; the effects of stable manure and superphosphate upon the 
*erowth of the plant; the effects of stable manure applied upon the 
surface, and plowed under, upon the growth of the plant, and to com- 
pare the effects of all these, with plants grown on unfertilized soil. 
The tests were made on six plats, each one-twentieth of an acre 
in extent, designated as F. 10, to F’. 15, inclusive. The soil of all 
was plowed before any fertilizers were applied. 
Plat F. 10 was divided into two equal parts. On one, the south 
half, thirty five cubic feet of well rotted stable manure was applied 
evenly on the surface. On the north half of the same plat, the same 
amount of stable manure was applied, but buried to the depth of 
eight inches beneath the surface, which placed it below the sod. 
This application is at the rate of eleven cords per acre. 
Plat F. 11 received no fertilizer. 
Plat F. 12 received seventy cubic feet (at the rate of eleven cords 
per acre) of well rotted stable manure spread evenly upon the 
surface. 
Plat F. 13 received fifty pounds superphosphate, or at the rate 
of 1,000 pounds an acre. 
- Plat F. 14 received forty eight pounds chloride (muriate) of 
potash, or at the rate of 960 pounds per acre. 
Plat F. 15 received fifty six pounds sulphate of potash, or at the 
rate of 1120 pounds per acre. 
The stable manure was applied before the plants were set. The 
other fertilizers were applied June 13 and July 10, one-half of the 
amount on each day. 
The plants which were of the Belknap variety, were set out on 
June 7, and those that failed to survive were reset later. They were 
topped as soon as the flow buds appeared, and were cut Sept. 12. 
The two halves of F. 10 are comparable with each other, F. 12 
and F’. 13 are comparable, also F. 14. and 15; and all are comparable 
with F. 11 which received no fertilizer. 
We give the weights of green tobacco, and of cured leaf per hun- 
dred plants, also the percentage of cured leaf, as follows. As the 
