48 WILSON & TOOMKR FERTILIZER COMPANY 



in clay lands, but where the entire ammonia content of 

 fertilizer used on clay is derived from nitrate of soda 

 the accumulations of sodium will be enough to pack the 

 soil. Keasonable amounts have no deleterious effects, 

 and such results never occur on open lands because 

 sodium compounds leach away so rapidly. 



Nitrate of Potash is organic. The nitrate has the 

 same properties as described in nitrate of soda, and 

 the potash the same as will be shown under sulphate 

 of potash, but this material does not dissolve quite as 

 readily as nitrate of soda. As plants use both elements, 

 nitrate of potash is a neutral compound in its action. 

 It is used in many manufactures and its market price 

 is far in advance of its true worth to the grower. 



Cyanamid is often called lime nitrogen. It is inor- 

 ganic. Its plant food is in the form of nitrogen and 

 must be changed to ammonia and then to nitrates be- 

 fore it becomes available to the plant. The other part 

 consists largely of lime and carbon and of some com- 

 pounds of iron, silicon, etc. Some cyanamids have a 

 nitrate mixed with them to furnish plant food w r hile 

 the slower cyanamid is coming into availability. 



Calcium Nitrate, like cyanamid, is a combination of 

 air nitrogen with lime, but in this instance the nitrogen 

 is in the form of nitrate and therefore an immediate 

 plant food. Calcium nitrate, often called lime nitrate, 

 is so soluble it becomes liquid when exposed to moist air. 

 This is, in a measure, prevented by adding lime to a 

 hot solution of calcium nitrate, making "basic calcium 



