52 HATCH EXrElilMENT STATION. [Jan. 



From the above table it will be seen that the quality of 

 the licensed fertilizers during the past year has not been up 

 to the usual standard. 



Trade Values of Fertilizing Ingredients in Raw Materials and Chemicals, 

 1904 and 1905 {Cents per Pound). 



Nitrouren in ammonia salts 



NitroiAcn in nitrates, 



Orgjanic nitroi^en in dry and line-ground fisli, meat, i)lood, and in higli- 



grade mixed fertilizers, 



Organic nitrogen in fine bone and tankage 



Organic niti'ogen in coarse bone and tankage 



Pliosi)lioric acid soluble in water 



Phosiilioric acid solnljle in ammonium citrate, 



Pliosplioric acid in line-ground fish, bone and tankage 



Phosplioric acid in cotton-seed meal, castor pomace and wood ashes, . 



Phosphoric acid in coarse fish, bone and tankage, 



Phosphoric acid insoluble (in water and in neutral citrate of ammonia) 



in mixed fertilizers, 



Potasli as sulfate, free from chlorides, 



Potash as muriate (chloride) 



Potash as carbonate 



17.50 

 16.00 



17. .50 

 17.00 



17.50 

 17.00 

 12.50 

 4.50 

 4.00 

 4.00 

 4.00 

 3.00 



2.00 

 5.00 

 4.25 



18.50 

 18.00 

 13.00 

 4.. 50 

 4.00 

 4.00 

 4.00 

 3.00 



2.00 

 5.00 

 4.25 

 8.00 



A comparison of the market cost of the three essential 

 elements of plant food for 1905 with the previous year 

 shows the onl}^ variation to be in the various forms of 

 nitrogen compounds : nitrogen in the form of nitrates, and 

 the higher grades of organic nitrogen, including nitrogen in 

 high-grade mixed fertilizers, is a cent higher per pound ; 

 while the medium and lower grades of organic nitrogen also 

 show an increased cost of one-half cent per pound. All 

 nitrogen compounds, with the exception of ammoniates, 

 show somewhat of an increase in cost as compared with 

 1904. 



The above schedule of trade values was adopted by repre- 

 sentatives of the Massachusetts, Connecticut, Rhode Island, 

 Maine, Vermont and New Jersey experiment stations at a 

 conference held during the month of March^ 1905, and is 

 based upon quotations in the fertilizer market in centers of 

 distribution in New England, New York and New Jersey 

 during the six months preceding March, 1905, and refers to 

 the current market prices, in ton lots, of the leading stand- 

 ard raw materials furnishing nitrogen, phosphoric acid and 

 potassium oxide, and which go to make up our commercial 

 fertilizers. 



