CONTROL SERIES No. 69 

 (b) Tonnage of Unmixed Fertilizing Materials. 



The tonnage of unmixed materials was distributed as follows: nitrogen prod- 

 ucts, 39.26 per cent; phosphoric acid products, 24.75 per cent; potash products, 

 4.03 per cent; tankage, fish, bone, tobacco stems, wood ashes and nitrate of 

 potash, 20.12 per cent; and miscellaneous, 11.85 per cent. 



Ten of the most popular grades are listed in the following table in comparison 

 with a similar list for 1932. 



During both 1932 and 1933 the four fertilizer grades bought by the Massa- 

 chusetts farmers in the largest tonnage were 5-8-7, 4-8-4, 4-8-7, and 4-8-10. 

 The 3-10-4 and 7-6-6 grades, which occupied the fifth and sixth places respec- 

 tively in 1932, changed places this year. The 4-10-5 grade, which had the 

 seventh largest tonnage in 1932, dropped to the eleventh place in 1933, while 

 the seventh place was taken by the 6-3-6 grade. The 3-8-4 grade, which had 

 the eighth largest tonnage in 1932, occupied eighteenth place this season with a 

 decrease of 687 tons sold; and 5-3-5 occupied eighth place. The 4-12-4 grade 

 with ninth largest tonnage in 1932 dropped to tenth place this year, with a 

 decrease of 331 tons. The 5-8-10 grade, which was in the eleventh place in 

 1932, took the ninth place this season, but with a decrease of 189 tons over the 

 previous year. 



