INSPECTION OF COMMERCIAL FERTILIZERS 

 FOR THE SEASON OF 1935 



By H. D. Haskins, Official Chemist i 



CONTENTS 



Page 



Manufacturers and brands 2 



Comparative cost of fertilizer chemicals ard unmixed fertilizer products 3 



Fertilizer trade values 4 



Fertilizer tonnage 5 



Plant food tonnage 5 



"New England Standard Nine" grades 7 



Mixed fertilizers 9 



Deficiency statistics 9 



MLxing efficiency table 11 



Fertilizer costs compared 11 



Acid and basic fertilizers 11 



Mixtures showing a commercial shortage of $1 or more per ton 13 



Mixtures substantially complying with guarantees 14 



Chemicals and raw products 36 



Summary of results of the inspection 36 



Nitrogen compounds 37 



Phosphoric acid compovmds 40 



Potash compounds 41 



Products supplying nitrogen and phosphoric acid 42 



Pulverized animal manures 44 



Miscellaneous 46 



Stone Meal 47 



Definitions and interpretations relating to fertilizers 47 



Directory of manufacturers who registered fertilizers for sale in Massachusetts in 1935 . 47 



MANUFACTURERS AND BRANDS 



Registrations have been perfected in Massachusetts during 1935 by 91 firms, 

 covering 489 brands of mixed fertihzer and unmixed fertilizing materials. The 

 nature of these products is shown by the following classification : 



Complete fertilizers 284 



Ammoniated superphosphates 5 



Superphosphates with potash 1 



Dry ground fish, tankage and groimd bone 53 



Fertihzer simples, including organic nitrogen compounds . . 95 



Tobacco stems 1 



Pulverized manures 32 



Cotton hull ashes and wood ashes 4 



Peat products 6 



Stone meal 2 



Nitrate of potash 6 



Total 489 



1 Assisted by H. Robert DeRose, Albert F. Spelman, J. W. Kuzmeski, Karol Kucinski, Chemists; 

 James T. Howard, C. L. Whiting, G. E. Taylor, Sampling Agents; Harry L. Allen, Laboratory 

 Assistant; Cora B. Grover, Clerk. 



