INSPECTION OF COMMERCIAL FERTILIZERS 

 AND AGRICULTURAL LIME PRODUCTS 

 FOR THE SEASON OF 1950 



BY FERTILIZER CONTROL SERVICE STAFF 



John W. Kuzmeski, Research Professor, Official Cheinisl 

 Albert F. Spelman, Associate Research Professor 

 C. Tyson Smith, Assistant Research Professor, Microscopis 

 Robert T. Wetherbee, Asistant Research Professor 

 Joseph Bart. Research Instruct^'r 

 Joserh A. Martell, Technical Assistant 

 Edward S. Berestka, Technical Assistant 

 Joseph Conklin, hispector 

 Cora B. Grover, Principal Clerk 



PERTINENT FACTS 

 RELATING TO MASSACHUSETTS FERTILIZER LAW 



Commercial Fertilizers 



Registration is required annually on January 1. 



Registration fee is $8 for each element: nitrogen, phosphoric acid, potash, mag- 

 nesia. 

 Label must show. 



Net weight of fertilizer 

 Name, brand or trade m.ark, and grade 

 Name and address of manufacturer 



Guaranteed analysis: nitrogen, available phosphoric acid, water soluble 

 potash. A guarantee of total phosphoric acid may be used instead of 

 available phosphoric acid for bone, untreated phosphate rock, tankage,^ 

 dried and pulverized manures, ground seeds, and wood ashes. 

 Tonnage reports are required semi-annually, on January 1 and July 1 

 Tonnage fee: 6 cents per ton of 2,000 pounds 



Lime Products 



Registration is required annually on January 1. 

 Registration fee: $12 for each brand. 

 Label must show: 



Net weight of product 



Name, brand or trade mark, and form of lime 



Name and address of manufacturer 



Guaranteed analysis: calcium oxide, magnesium oxide, carbonates of cal- 

 cium and magnesium, or calcium sulphate (in gypsum or land plaster) 



Make checks payable to Massachusetts Agricultural Experiment Station and 

 send correspondence to 



JOHN. W. KUZMESKI 



Massachusetts Agricultural Experiment Station 



Amherst, Mass. 



