INSPECTION OF COMMERCIAL FERTILIZERS 7 



Of the 48,527 tons of complete fertilizer sold, 74 percent was furnished by 

 9 grades and 126 brands. Double- and multiple-strength grades totaled 3,267 

 tons and 36 brands, which was 851 tons more than during the previous year. 



Of the mixed fertilizer sold, 98 percent contained 14 percent or over of 

 available plant food. 



There were 469 tons more of low-analysis (less than 14 percent available 

 plant food) complete fertilizers sold than in 1936. The 5-3-5 grade, comprising 

 6 brands, furnished 71 percent of the tonnage of this class of goods. 



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 1936 and 1937. 



The following table shows how the tonnage sold in 1937 corresponds with 

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

 omists in 1931. 



a Including 10 tons of 10-16-14. 



b Including 1,160 tons of 8-16-16. 828 tons of 8-16-14, 2 



of 10-18-12. 

 c Including 258 tons of 5-10-5 and 14 tons of 15-30-15. 

 d Including 26 tons of 10-5-10 and 20 tons of 8-4-8. 

 e Including 152 tons of 8-16-20. 

 / Including 142 tons of 4-16-20. 



tons of 12-16-12 and 2 tons 



Of the total tonnage of mixed fertilizer sold in Massachusetts, 65 percent 

 was from grades recommended by New England Agronomists to meet New 

 England conditions, and 24 percent additional tonnage was from grades vary- 

 ing but one percent 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 (37,077 tons), all but four were among the New 

 England Standard Nine. These six grades showed a total tonnage of 29,897. 



