23 



BRANDS OF MIXED FERTILIZER SHOWING INFERIOR FORMS OF 



NITROGEN. 



Out of a total of 323 brands of mLxed fertilizer, 17 (about 5.25 per cent of the 

 total number) were found to contain organic nitrogen of low activity by the laboratory 

 methods. Fifteen of these were complete fertilizers and two were ammoniated super- 

 phosphates. The brands are listed in the following table in which is given the per- 

 centage activity of th*e water insoluble organic nitrogen by both the alkaline and the 

 neutral permanganate methods. (The standard for the alkaline permanganate method 

 is 50 per cent; for the neutral permanganate method, 85 per cent.) 



The table does not include the pulverized manures, which from their general 

 character are known to contain water insoluble organic nitrogen of low activity. 



Brand. 



Grade. 



Berkshire Complete Fertilizer 



Berkshire Grass Special ....... 



Berkshire Potato & Vegetable Phosphate 



Chittenden's Vegetable & Onion Grower with 3% Potash 



Eastern States 3-8-4 



Old Deerfield "4-8-4" Mixed Fertilizer .... 



Old Deerfield 4-8-7 Mixed Fertilizer .... 



"Victory" Farm and Garden ...... 



Lowell Empress 1-10-1 for Grain and Vegetables . 

 Mapes Tobacco Ash Constituents ..... 



Mapes General Use Manure 



Brown's Fish Bone & Potash 



"P. & P." 1-10-1 for Grain and Grass . .' . 

 Rogers & Hubbard's Potato Phosphate .... 

 Royster's Banner Guano, 1920 stock .... 



Royster's Landmark Brand 



Royster's Prime Fish Brand 



3-8-3 

 7-4^ 

 2-8-2 

 3-8-3 

 3-8^ 

 4-8-4 

 4-8-7 

 3.5-8-3.! 

 1-10-1 

 1-4-15 

 3-6-4 

 4-8-4 

 1-10-1 

 2-8-4 

 2-8-10 

 4-10-0 

 2-8-0 



Percentage Activity. 



Alkaline 



Perm anganate 



Method. 



37.80 

 37.60 

 43.40 

 44.40 

 39.60 

 37.20 

 42.40 

 41.00 

 41.60 

 40.80 

 33.20 

 41.80 

 31.60 

 44.00 

 35.20 

 41.20 

 44.20 



Neutral 



Permanganate 



Method. 



80.40 

 74.60 

 84.20 

 78.20 

 55.40 

 81.20 

 82.40 

 56.20 

 78.00 

 60.60 

 77.60 

 81.80 

 83.20 

 74.60 

 84.20 

 67.80 

 63.20 



HIGH ANALYSIS VERSUS LOW ANALYSIS FERTILIZER MIXTURES. 



The following table shows the number of brands and the tonnage of high and low 

 analysis complete fertilizers, ammoniated superphosphates, and phosphate and potash 

 which were sold in Massachusetts during the season : — 



