inspf:ction of commercial fertilizers 7 



In the following table are listed ten of the most popular grades of mixed 

 fertilizer together with the tonnage of each sold in Massachusetts for the 

 years 1935 and 1936. 



5-8-7 



4-8-4 



4-8-7 



4-8-10 



7-6-6 



3-10-4 



4-8-8 



4-12-4 



5-8-10 



6-3-6 



The following table shows how the tonnage sold in 1936 corresponds with 

 the New England Standard Nine grades selected by the New England Agron- 

 omists in 1931. 



a Including 905 tons of 8-16-14, 827 tons of 8-16-16, and 187 tons of 12-16-12. 

 b Including 338 tons of 5-10-5 and 11 tons of 15-30-15. 

 c Including 39 tons of 10-5-10 and 1 ton of 8-4-8. 

 d Including 104 tons of 8-16-20. 

 e Including 81 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 21 per cent additional tonnage was from grades vary- 

 ing 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 (36,640 tons), all but three were among the New 

 England Standard Nine. These seven grades showed a total tonnage of 28,839. 



Over 20 per cent of the total tonnage of mixed fertilizer 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, sixth largest; 4-12-4, 8-24-8, 

 eighth largest: 3-10-6, thirteenth largest; and 6-3-7, fourteenth largest. 



The tonnage of unmixed materials, as shown in the following table, was 

 distributed as follows: nitrogen products, 40 per cent; phosphoric acid prod- 

 ucts, 29 per cent; potash products, 6 per cent; tankage, fish, bone, nitrate of 

 potash, Ammo-Phos, and wood ashes, 19 per cent; and miscellaneous, 6 per 

 cent. Pulverized animal manures are not included. 



