CONTROL SERIES NO. 178 



FERTILIZER TONNAGE 



Tonnage of Fertilizer Sold in Massachusetts 



Tonnage of Mixed Fertilizers, January 1, 1957 to July 1, 1958 



Tonnage of Unmixed Materials, January 1, 1957 to Julyl, 1958 



♦The grade represents the plant food guarantee and is expressed in the order of nitrotten 

 available ijhosphoric acid, and potash. ^ ' 



