34 



mechanical condition for spreading over the field. From 175 to 

 525 pounds per acre should fye used. 



CALCINED KIESERITE is valuable for its contents of 

 magnesia, acting as dissolving agent and manure preserver. 



MURIATE OF POTASH is the richest of any of the potash 

 salts, and the most soluble. It may be used with all crops, 

 except tobacco, etc., and has proven of great advantage with 

 all cereals, with rape, peas and beans, beets, asparagus, cabbage, 

 etc. It should be applied in the Fall in quantities of 175 to 350 

 pounds per acre. It is not efficient however as a manure pre- 

 server. 



CALCINED POTASH (KALI SALTS.. (MANURE 

 SALTS.) In composition and effect upon the plant they are 

 quite similar to kainit, and they should be used in the same 

 manner. They are however richer in potash (kali) than kainit, 

 hence may be used in smaller quantities. The proper application 

 per acre is 250 to 500 Ibs. of the low grade (15 % potash kali), 

 and 175 to 400 Ibs. of the high grade (20 % potash kali.) As 

 manure preservers they are valuable, and the low grade has the 

 preference above the high grade salts for this purpose. 



NO FERTILIZER CAN GUARANTEE A CROP. 



Elementary causes of failure of crops can never be done 

 away with, as long as neither heat nor cold, nor rain, snow, 

 wind and hail are under man's control. Failures arising from 

 such causes, and failures arising from self-deception, by neglect- 

 ing to observe carefully all the injunctions of science, do not 

 invalidate the favorable results that can be obtained, and are 

 obtained, whenever no array of adverse circumstances combine 

 against them. No fertiliser can guarantee a crop, nor should 

 any farmer expect it. All that science can do is to lay down 

 the conditions, under the strict observance of which favorable 

 results and paying crops may be looked forward to. 



The practical questions with what ingredients and in what 

 amounts should the ground be fertilized to insure paying crops 

 are, by the very nature of the case, the most difficult to answer. 

 For a correct answer depends first upon the fertilizer-require- 



