INSPECTION OF COMMERCIAL FERTILIZERS 



FERTILIZER TONNAGE. 

 Tonnage of Mixed and Unmixed Fertilizers Sold in Massachusetts. 



There were 2,674 tons more fertilizer sold in the state in 1934 than during the 

 previous year. The tonnage of mixed fertilizer was 3,084 more, and that of the 

 fertilizer chemicals and unmixed materials was 581 less than for 1933. Pulverized 

 manures showed an increase of 181 tons. Of the total tonnage sold, 70 per cent 

 was mixed fertilizer, 27 per cent was unmixed materials, and 3 per cent was dried 

 and pulverized natural manures. 



Plant Food Tonnage. 



There were 931 more tons of plant food sold in Massachusetts than during 

 1933, of which 142 tons were nitrogen, 364 tons available phosphoric acid, and 

 425 tons potash. 



There were 11,284 tons of plant food sold, of which 28 per cent was nitrogen, 

 43 per cent available phosphoric acid, and 29 per cent potash. Mixed fertilizers 

 furnished 73 per cent of the plant food, chemicals and unmixed materials 26 

 per cent, and pulverized manures 1 per cent. 



The three plant food elements were furnished in the following proportions by 

 the mixed fertilizers and the unmixed materials, including the pulverized manures: 

 nitrogen, 63 per cent from mixed and 37 per cent from unmixed; phosphoric acid, 

 72 per cent from mixed and 28 per cent from unmixed; potash, 84 per cent from 

 mixed and 16 per cent from unmixed. 



The following tables present tonnage figures for the period from July 1, 1933, 

 to July 1, 1934, for both mixed fertilizers and unmixed fertilizer materials. In 

 the case of the mixed fertilizers the grade represents the plant food guarantee of 

 each fertilizer and is expressed in the order of nitrogen, available phosphoric acid, 

 potash. 



