INSPECTION OF COMMERCIAL FERTILIZERS 



INSPECTION OF COMMERCIAL FERTILIZERS 

 FOR THE SEASON OF 1929 



By H. D. Haskins, Official Chemist, assisted by H. Robert DeRose, M. W. 

 Goodwin, and John W. Kuzmeski. 



MANUFACTURERS AND BRANDS 



Since January 1, 1929, 104 firms or individuals have registered for sale in 

 Massachusetts 604 brands of mixed fertilizers and fertilizing materials. The 

 following classification shows the general nature of these products: 



Complete fertilizers 365 



Ammoniated superphosphates 2 



Superphosphates with potash 2 



Ground bone, tankage, and dry ground fish 66 



Fertilizer simples, including organic nitrogen compounds 147 



Pulverized maniu-es 17 



Wood ashes 2 



Peat products 2 



Stone meal 1 



Total 604 



The sampUng agents were not successful in securing samples of the following 

 brands: 



1 John B. Ziflin«ki, Jr., assisted in the nitrogen laboratory about two months. SampUng 

 agents: James T. Howard, George H. Kelton, R. G. Tonseth and C. L. Whiting. Clerk: 

 Cora B. Grover. 



