INSPECTION OF COMMERCIAL FERTILIZERS 



The following table shows how the tonnage sold in 1934 corresponds with the 

 New England Standard Nine grades selected by the New England Agronomists 

 in 193L 



a Including 673 tons of 8-16-14. 



b Including 242 tons of 5-10-5 and 6 tons of 15-30-15. 



c Including 72 tons of 8-16-20. 



d Including 7 tons of 10-5-10 and 2 tons of 8-4-8. 



e Including 12 tons of 10-16-20. 



/ Including 32 tons of 4-16-20. 



Of the total tonnage of mixed fertilizer sold in Massachusetts. 67 per cent was 

 from grades recommended by New England Agronomists to meet New England 

 conditions, and 17 per cent additional tonnage was from grades varying but one 

 per cent in one or more plant food elements from the grades thus recommended. 

 Of the ten grades, including the multiple strength mixtures, that have the highest 

 tonnage (36,278 tons), all but fom- were among the New England Standard Nine. 

 These six grades showed a total tonnage of 28,891. 



Over 18 per cent of the total tonnage of mixed fertihzer was from five grades 

 not included in the New England Standard Nine. They are 4-8-7, 8-16-14, third 

 largest tonnage sold; 4-8-8, 8-16-16, seventh largest; 4-12-4, 8-24-8, eighth 

 largest; 4-10-4, eleventh largest; and 5-3-5, twelfth largest. 



The tonnage of unmixed materials, as showTi in the following table, was dis- 

 tributed as follows: nitrogen products, 42 per cent; phosphoric acid products, 31 

 per cent; potash products, 5 per cent; tankage, fish, bone, nitrate of potash, 

 Ammo-Phos, and wood ashes, 18 per cent; and miscellaneous, 4 per cent. Pul- 

 verized animal manures are not included. 



