The following deductions result from a study of the preceding tables :^ — 



1. Seventy-one per cent of the total fertilizer tonnage sold was mixed goods 

 and 29 per cent was unmixed materials. 



2. Of the 44,013 tons of mixed goods sold, about 99.4 per cent were com- 

 plete fertilizers and .6 per cent ammoniated superphosphates and superphos- 

 phates with potash. 



3. Of the 43,763 tons of mixed complete fertilizers, about 89 per cent were 

 high-analysis (14 per cent or over of available plant food) and 11 per cent 

 low analysis fertilizers (less than 14 per cent available plant food). This 

 shows an increase over 1923 of 2 per cent in favor of the high-analysis goods. 



4. Of the 39,014 tons of high-analysis complete fertilizers, 90.5 per cent 

 were furnished by 26 grades and 229 brands, and 76 per cent were furnished 

 by 10 grades and 173 brands. 



5. Of the 4,749 tons of low-analysis complete fertilizers, 92 per cent were 

 furnished by 5 grades and 42 brands, and 81 per cent were furnished by 3 

 grades and 37 brands. 



6. The tonnage of unmixed fertilizing materials, exclusive of pulverized 

 manures and Nitrapo, was distributed as follows: nitrogen products, 53 per 

 cent; phosphoric acid compounds. 38 per cent; potash compounds, 9 per cent. 



Of the total tonnage of mixed fertilizers, 47 per cent was derived from 

 grades adopted by station directors and agronomists as the "New England 

 Standard Nine"; while an additional 26 per cent deviated from the grades 

 thus recommended by only 1 per cent in one or more of the plant foods, 

 namely, ammonia, phosphoric acid and potash. 



Relation between Massachusetts Tonnage and the "New England Standard 

 Nine" Grades of Mixed Fertilizer. 



Several of the grades not recommended in the "New England Standard 

 Nine" had a relatively high tonnage, as follows: 



Grade Brands Tonnage 



Three of these grades represent fertilizers used largely for tobacco. 



Two low-analysis grades of mixed fertilizers likewise had significantly large 

 tonnages: the 2-8-3 with a total of 862 tons sold under 17 different brand 

 names; and the 2-8-2 with 804 tons sold under 18 brand names. These two 

 particular grades are uneconomically low, and are probably used by farmers 

 who are least able to pay high prices for their plant food. 



^ - . ox .. .. MIXED FERTILIZERS 



Deficiency Statistics. 



The following table gives a general summary of the inspection of each 

 manufacturer's brands; it records the number of brands analyzed and the 

 number approximately equal to the guarantee in commercial value; it records 



