GRASS GROWING FOR PROFIT 39 
emptying, it is a good plan to soak in water, which 
will make an excellent liquid manure, say one empty 
bag to a barrel of water. 
If lumpy, the Nitrate should be broken up fine, 
which is easily done by pounding it on the barn floor 
with the back of a spade or shovel, or by a hand 
grinding machine made especially for farm mixing. 
Nitrate of Soda, unlike sulphate of ammonia, 
dried blood and complete mixed fertilizers, can be 
mixed with lime or ashes without loss of Nitrogen. 
PROOF POSITIVE. 
In a twenty year test to determine the value of 
various sources of Nitrogen, the New Jersey Experi- 
ment Station found ‘that crop yields and the per- 
centage of Nitrogen recovered in the crop were 
greater when Nitrates were used.” 
The official figures are — 
“Tf we assign to Nitrate Nitrogen a value of i100, then 
the relative availability of the four materials stands as 
follows”: 
INitrate-O£ S Oda swwtesi: poms nee oe etwas 100.0 
Amimoniuin Sulfate 220: 22 ee esses eas 76.1 
DICE ERO OG andes otters a deers cae eae ee ena 62.0 
Wan Ure uarces ernest A uci ee rere ARS 52.4 
This research entitled “Twenty Years’ Work on the Avail- 
ability of Nitrogen in Nitrate of Soda, Ammonium Sulfate, 
Dried Blood and Farm Manures,” was published in “Soil 
Science,” April, 1918, by J. G. Lipman and A. W. Blair. 
