INFLUENCE OF MANURES ON GRASS LAND. 153 
When the comparison was between the two forms of phos- 
phate, unaccompanied by any other manure (Plots 3 and 4, 
Table I.), the super. invariably produced the larger amount 
of Agrostis. When the comparison was between the two 
forms of phosphate in the presence of nitrate of soda and 
kainit (Plots 9 and 10, Table I.; and 7 and 9, Table II.) a 
similar result was obtained at three of the four stations of 
Set 1, and at all the stations of Set 2. As the result, there- 
fore, of eleven tests, super. was found to surpass basic slag 
in its stimulating influence on Agrostis no less than ten times. 
As in the great majority of cases the aggregate yield by 
super was larger than that produced by slag, Agrostis is even 
more encouraged by the former than the percentage figures 
would indicate. 
In further proof of this influence of superphosphate we may 
compare Plots 1oand 11, Table I. The former plot received 
all its phosphate as slag, while the latter received half from 
slag and half from super. The introduction of super. has, 
without an exception, increased the percentage of Agrostis. 
The influence on Agrostis of Katntt when used alone (Plots 1 
and 5, fable I.)—At three of the four stations kainit reduced 
the percentage of Agrostis, the exception being found on the 
peaty soil of Glasson. 
The influence on Agrostis of Katnit when added to Nitrate 
of Soda (Plots 2 and 7, Table I.). <A precisely similar result 
was got in this case, the only exception being again at 
Glasson. 
The influence on Agrostis of Katntt when added to Super- 
phosphate (Plots 3 and 8, Table I.).—In this case there is no 
exception to the repressing action of kainit on Agrostis. 
The influence on Agrostis of Katntt when added to both 
Nitrate of Soda and Superphosphate (Plots 6 and 9, Table I.).— 
Here also kainit has never failed to reduce the percentage of 
Agrostis. 
The influence on Agrostis of a double and triple dose of 
Kainit.—Plots 2, 5, and 6, Table II.). On the whole there is 
but little difference in the percentage of Agrostis produced by 
varying amounts of kainit. 
Summary of the Results on Agrostis obtaincd with Karnit.— 
