INSPECTION OF COMMERCIAL FERTILIZERS 7 



FERTILIZER TONNAGE. 

 Total Tonnage of Mixed and Unmixed Fertilizers Sold in Massachusetts. 



The tonnage of plant food sold in Massachusetts from July 1, 1927, to July 1, 

 1928, is shown in the accompanying table. 



Plant Food Tonnage. 



There were 1,276 tons less fertilizer sold in 1928 than during the previous 

 season in spite of the fact that the tonnage in mixed fertilizers was greater by 

 1,052 tons than for 1927. In other words, the decline in tonnage was confined 

 to unmixed materials and pulverized manures and amounted to 2,071 tons for 

 the former and 257 tons for the latter group. 



Of the total tonnage of all kinds of fertilizer sold in Massachusetts during 

 the season, 67.59 per cent was mixed goods and 27.88 per cent was unmixed 

 materials exclusive of pulverized natural manures. 



Of the total tonnage of plant food sold (12,456.8 tons), 67.89 per cent was 

 from mixed goods and 30.25 per cent from unmixed materials. Of the total 

 tonnage of the different plant food constituents sold for nitrogen, 59.84 per cent 

 was from mixed and 37.33 per cent from unmi.xed; available phosphoric acid, 

 65.09 per cent was from mixed and 33.96 per cent from unmixed; potash, 79.24 

 per cent was from mixed and 18.33 per cent from unmixed materials. 



