CONTROL SERIES No. 69 



FERTILIZER TONNAGE. 



Tonnage of Mixed and Unmixed Fertilizers Sold in Massachusetts. 



There were 6,983 tons less fertilizer sold in the state in 1933 than during the 

 previous year. The tonnage of mixed fertilizers was 2,613 less, and that of the 

 fertilizer chemicals and unmixed materials was 3,874 less than for 1932. Pul- 

 verized manures showed a decrease of 496 tons. 



Of the total tonnage sold, 67.45 per cent was mixed fertilizer, 29.93 per cent 

 was unmixed materials, and 2.62 per cent was dried and pulverized natural 

 manures. 



Plant Food Tonnage. 



There were 1,193 tons less of plant food sold in the state than during 1932, of 

 which 283 tons were nitrogen, 446 tons available phosphoric acid, and 464 tons 

 potash. 



There were 10,355 tons of plant food sold, of which 29.59 per cent was nitrogen, 

 42.91 per cent available phosphoric acid, and 27.50 per cent potash. Mixed 

 fertilizers furnished 70.80 per cent of the plant food, chemicals and unmi.xed 

 materials 28.31 per cent, and pulverized manures 0.89 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, 60.22 per cent from mixed and 39.78 from unmixed; phosphoric acid, 

 69.28 per cent from mixed and 30.72 from unmixed; potash, 84.55 per cent from 

 mixed and 15.45 per cent from unmixed. 



The following table presents tonnage figures for the period from July 1, 1932, 

 to July 1, 1933, for both mixed fertilizers and unmixed fertilizer materials. The 

 fertilizer grades are expressed in round numbers and in the order of nitrogen, 

 available phosphoric acid and potash, which represent the plant food guarantee 

 of each fertilizer grade. 



