GRASS GROWING FOR PROFIT 29 
General Directions for the Use of Nitrate of Soda on 
Seeded Crops. 
The use of Nitrate of Soda alone is never recom- 
mended, except, at the rate of not more than one 
hundred pounds to the acre. It may be thus safely 
and profitably used without other fertilizers. It may 
be applied at this rate as a Top-Dressing in the spring 
717 716 715 
No treatment. 320 lbs. Acid Phosphate. 160 lbs. Nitrate 
2200 Ibs. hay 160 lbs. Nitrate of Soda. of Soda. 
per acre. 8840 lbs. hay per acre. 3550 Ibs. hay 
per acre. 
Fig. 18.— These plats show in a very marked way the influence of 
Nitrate of Soda on the yield of hay. (Cornell Univ. Bulletin No. 232.) 
of the year, as soon as vegetation begins to turn 
green; or, in other words, as soon as the crops begin 
new growth. At this rate very satisfactory results 
are usually obtained without the use of any other 
fertilizer, and the Soda residual, after the nitroge- 
nous ammoniate food of this chemical is used up 
by the plant, has a perceptible effect in sweetening 
sour land. 
In most of our grass experiments where Nitrate 
was used alone at the rate of but one hundred pounds 
