CONTROL SERIES No. 65 



FERTILIZER TONNAGE. 

 Tonnage of Mixed and Unmixed Fertilizers Sold in Massachusetts. 



There were 3,110 tons less fertilizer sold in the state in 1932 than during 

 the previous year. The tonnage of mixed fertilizers was 3,774 less, while 

 that of the fertilizer chemicals and unmixed materials was 1,151 more than 

 in 1931. Pulverized manures showed a decrease of 487 tons. 



Of the total tonnage sold, 64.1 per cent was mixed fertilizer, 32.8 per cent 

 was unmixed materials, and 3.1 per cent was pulverized natural manures. 



Plant Food Tonnage. 



There were only 102 tons less of plant food sold in the state than during 



1931, although the actual tonnage of fertilizer sold was 3,110 less. Three 

 hundred and five tons more of nitrogen, 244 tons less of available phosphoric 

 acid, and 163 tons less of potash were used in the state than during the 

 previous year. 



There were 11,548 tons of plant food sold, of which 28.98 per cent was 

 nitrogen, 42.34 per cent available phosphoric acid, and 28.68 per cent potash. 

 Of the 11,548 tons of plant food sold, 69.86 per cent was furnished in mixed 

 fertilizers, 29.10 per cent from chemicals and unmixed materials, and 1.04 

 per cent from pulverized manures. 



The mixed fertilizers and unmixed materials, including the pulverized 

 manures, furnished the three plant food elements in the following proportions: 

 nitrogen, 58.47 per cent from mixed and 41.53 per cent from unmixed; phos- 

 phoric acid, 69.26 per cent from mixed and 30.74 per cent from unmixed; 

 potash, 82.28 per cent from mixed and 17.72 per cent from unmixed fertilizers. 



In the tabulation of the tonnage of mixed fertilizers the fertilizer grade is 

 expressed in round numbers and in the order of nitrogen, available phosphoric 

 acid, and potash. This represents the plant food guarantee of each fertilizer 

 grade. In those few cases where fractional numbers are given, the tonnage 

 accompanying the grade was sold during the six months ending January 1, 



1932, before the ruling requiring whole numbers in expressing grade became 

 effective. The tonnage tables show sales for one year, from July 1, 1931. 



