FERTILIZERS AND AGRICULTURAL LIME 



Manufacturer 



Average Percentage of Plant Food 

 Above or Below the Minimum Guarantee 



Nitrogen 



Available 



Phosphoric 



Acid 



Water 

 Soluble 

 Potash 



American Agricultural Chemical Co 



Apothecaries Hal' Co 



Armour Fertilizer Works 



Berlcshire Chemical Co 



Consolidated Rendering Co 



Eastern States Farmers' Exchange .... 

 Essex County Co-operative Farming Association 

 International Minerals & Chemical Corporation 



Old Deerfield Fertilizer Co., Inc 



Olds & Whipple, Inc 



Rogers & Hubbard Co 



Sears, Roebuck & Co 



Swift & Co , Plant Food Division ... 



Calculation of Shortages 



For calculating the approximate commercial shortages per ton the following 

 figures were used: 



Retail Cost 

 Per Unit 



Nitrogen : 



Water-soluble and synthetic organic - $2.00 



Water-insoluble of good quality and 



Water-soluble amounting to one-eighth of the percentage of 

 water-insoluble nitrogen found when the percentage of 

 water-insoluble nitrogen exceeds v30 8.00 



Available phosphoric acid - - L40 



Potash : 



Muriate... — - -80 



Sulfate - -- --- 1.10 



From cotton hull and boll ashes and wood ashes — - - 1-25 



These values represent the average retail cost to the consumer of the plant 

 food elements in unmixed materials. This does not include mixing and overhead 

 costs which increase the retail cost of these elements in mixed goods. 



To compensate for the increased unit cost in mixed goods the commercial 

 shortage as found by using our values is multiplied by the factor: Actual retail 

 selling price divided by our calculated guaranteed value. 



Example: A 5-8-7 fertilizer selling for $39.00 a ton analyzes: 



Total nitrogen ...- 4.67 



Water-insoluble nitrogen -- - - .88 



Available phosphoric acid 7.43 



Potash - 7.13 



Shortage: Nitrogen -- -.33 X$2.00 =$0.66 



Available phosphoric acid .57 X 1.40= .80 



Total - - S1.46 



