164 



FOOD FOR PLANTS 



Increased Yield by the Use of Nitrate of Soda. 



The increased yields of crops resulting from a top- 

 dressing with Nitrate of Soda are most striking. In 

 an article recently published by Dr. E. J. Russell, 

 Director of the Rothamsted Experimental Station, 

 the following figures are given. On an ordinary farm 

 where the land, while in fairly good heart, has not 

 been over well done, a farmer may reasonably expect 

 the following increases from a top-dressing of 1 cwt. 

 of Nitrate of Soda. 



Wheat, grain 

 Wheat, straw 

 Barley, grain 

 Barley, straw 

 Oats, grain 

 Oats, straw 



Hay 



Mangolds . . . 



Swedes 



Potatoes . . . . 



Per 1 Cwt. Nitrate 

 of Soda 



4^/^ bushels 



5 cwt 



654 bushels 



6^4 cwt 



7 bushels 



6 cwt 



8 to 10 cwt 



32 cwt 



20 cwt 



20 cwt 



Per 1 Cvrt. Super- 

 phosphate or High 

 Grade Basic Slag 



to 1^ bushels, 

 i^ to 5 cwt. 

 2 to 3 bushels 



to 2 cwt. 



1 to SYz bushels. 

 to 2 cwt. 



20 cwt. 



20 to 40 cwt. 



10 cwt. 



For purposes of comparison the effect of phos- 

 phates is shown also. 



