A comparison of these tabulated data with those of 1926 shows not only that 

 there was a larger tonnage of the "New England Standard Nine" grades sold in 

 1927, but also that a larger percentage of the total tonnage of mixed fertilizers 

 sold was among these grades. In round numbers, 61.3 per cent of the total ton- 

 nage of mixed fertilizers was among the "Standard Nine" grades, as compared 

 with 52 per cent for 1926; and 20 per cent additional tonnage was from grades 

 varying but one per cent in one or more plant food elements. 



Over 22 per cent of the total tonnage of mixed fertilizers was from seven grades 

 not recommended in the "New England Standard Nine." One of these, the 3-8-4 

 grade, had the third largest tonnage of any grade sold. The 4-6-10 had the fifth 

 largest, the 4-S-7 had the sixth largest, and the 6-6-4 had the ninth largest ton- 

 nage of any grade sold. 



Of the nine most popular brands sold, judging from the tonnage, only five were 

 members of the "New England Standard Nine" group. 



MIXED FERTILIZERS. 

 Summary of Deficiencies. 



Assuming that the Control Service was successful in sampling a sufficient ton- 

 nage of the several brands to fairly represent each firm, the following table records 

 the extent to which each manufacturer was able to maintain his minimum guarantee 

 and to furnish goods not lacking in commercial valuation, summaries being based 

 on tests for nitrogen, available phosphoric acid and potash. The table records 

 also the number of brands sampled and analyzed. 



Deficiency Statistics for Mixed Fertilizers. 



' Where several analyses of the same brand occur an average is secured and recorded in case of deficiencies 

 as well as for total number of tests or determinations. 



