CONTROL SERIES NO. 126 



MIXED FERTILIZERS 

 Deficiency Statistics for Mixed Fertilizers 



Manufacturer 



Number of 

 Samples 



_c3 ^ 



Number of Tests 



m u ^ 

 oj <U S 







cd -ui c^ 



— C c 



■" I' 5 



vU 2 



Acme Guano Co 



Agricultural Laboratories, Inc. 

 American Agricultural Chemical Co. 



Apothecaries Hall Co 



Armour Fertilizer Works 

 Berkshire Chemical Co. 

 Joseph Breck & Sons Corp. 

 Consolidated Rendering Co. 

 Eastern States Farmers' Exclian^e 

 Essex County Co-operative Farming 



Association . 

 Excell Laboratories . 

 Goulard & Olena, Inc. 

 Grasalo Co. . 

 A. H. Hoffman, Inc. 

 Hydroponic Chemical Co., Inc. 



Hy-Trous Corp 



, International Minerals & Chemicnl C 

 Old Deerfield Fertilizer Co., Inc. 



Olds & Whipple. Inc 



Plantabbs Co 



Rogers & Hubbard Co. 



O. M. Scott & Sons Co. ... 



Sears, Roebuck & Co 



M. L. Shoemaker Division of Wilson 



& Co.. Inc 



Swift & Co., Plant Food Division 



Tennessee Corp 



C. P. Washburn Co 



Woodruff Fertilizer Works. Inc. . 



3 



1 



80 



17 

 17 

 16 

 2 

 26 

 18 



3 



1 



1 



1 



1 



1 



1 



25 



18 



11 



1 



32 



7 



1 



1 

 13 

 3 

 2 

 2 







1 



1 



1 







1 



1 



13 



11 



11 



1 



24 



1 



1 



1 

 5 

 

 



2 



9 



3 



239 



51 



51 

 42 

 6 

 75 

 69 



9 



3 



3 



3 



3 



3 



3 



79 



61 



33 



3 



83 



21 



3 



2 

 39 

 9 

 6 

 9 



TOT A I S 



305 



920 



1 

 



37 

 3 



13 

 5 

 

 5 

 3 



3 

 

 

 

 

 

 



11 



2 

 

 

 7 

 1 

 





 10 

 5 

 3 

 1 



110 





 

 10 

 1 

 

 

 

 1 

 3 





 

 

 

 

 

 

 

 

 

 



1 



5 

 





 

 

 

 



15 



21 



Average Variation from Guaranteed Analysis 



Thirteen firms have registered three or more brands of mixed fertilizers. On 

 the basis of composition found by analysis as well as of tonnage sold, the follow- 

 ing table shows that each manufacturer was successful in avoiding average de- 

 ficiencies in plant food guarantees in his mixtures. 



