8 



A comparison of the above figures with those recorded for 1925 shows that a 

 smaller tonnage of the "New England Standard Nine" grades was used during 

 1926. Of the total tonnage of mixed fertilizers sold, about 52 per cent belonged 

 to the "New England Standard Nine" grades, as compared to 54 per cent in 1925. 

 An additional 27 per cent, however, was from grades varying but one per cent from 

 these in one or more elements of plant food. 



About 11.5 per cent of the total tonnage of mixed fertilizers was from seven 

 grades not recommended in the "New England Standard Nine" or in grades 

 varying but one per cent in one or more elements of plant food from the "Standard 

 Nine" group. The 4-6-10 grade was by far the most popular of the seven grades, 

 with 1,761 tons and 15 brands, followed by 10-3-8 and 6-6-4 with a combined 

 tonnage, about equally divided, of 1,272, representing 8 brands. 



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

 members of the "New England Standard Nine" group. 



MIXED FERTILIZERS. 



Summary of Deficiencies. 



The following table gives a picture of each manufacturer's record during the 

 season. Based on the assumption that the fertilizer control service was successful 

 in securing representative samples of a sufficient tonnage to fairly represent each 

 firm, the table records the number of brands sampled and analyzed and the extent 

 to which each manufacturer was able to maintain his minimum guarantee and to 

 furnish goods not lacking in commercial value. Summaries are based on tests 

 for nitrogen, available phosphoric acid and potash. 



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

 ciencies as well as for total number of tests or determinations. 



