26 GRASS GROWING FOR PROFIT 
have been due, in part at least, to the retention 1n 
the soil of a part of the previous applications of 
potassium salts, by virtue of extra soda having been 
taken up by the preceding crops in the place of super- 
fluous potash, whereby the potash supply in the soil 
was really conserved. 
Whole Field, except center, Fertilized with Fourteen Per Cent. Acid 
Phosphate, Six Hundred Pounds; Sulphate of Potash, Two 
Hundred Pounds; Nitrate of Soda, Two Hundred 
Pounds; yield, three tons per acre of cured hay. 
Square in Center of Field had Six Hundred Pounds Acid Phosphate, 
and Two Hundred Pounds Sulphate of Potash, but No Nitrate 
of Soda; yield, one ton per acre of cured hay. 
Highland Experimental Farms, New York. 
Owing to the marked peculiarities of different 
varieties of plants, it was not expected that direct 
manurial benefit to the grass would necessarily result 
from the use of the sodium salts [other than the 
Nitrate] even if such a direct effect might possibly 
occur in the growth of radishes, beets, turnips, and 
certain other plants. 
