A SURVEY OF THE FERTILIZER INDUSTRY. 7 



SOURCES OF NITROGENOUS MATERIALS. 



Table VI and a graph (fig. 1) show the sources of ammonia used 

 in mixed fertilizers. The table shows the total amount of each 

 material used, as reported by the fertilizer manufacturers/ the aver- 

 age ammonia content, the total quantity of ammonia in each 

 material, and the proportion of the total ammonia derived from 

 each source. 



Table VI. — Sources of ammonia in mixed fertilizer. 



Material. 



Average 

 per cent 

 of am- 

 monia. 



Quantity of mate- 

 rial used (2,000- 

 pound tons). 



1917 



1918 



Units of ammonia in 

 materials used (unit 

 =20 pounds). 



1918 



Percentage of 



ammonia from 



each soin-ce. 



1917 



All sources. 



Sodium nitrate , 



Ammonium sulphate , 



Cyanamid 



Nitrate of lime 



Ammonium phosphate 



Tankage: 



Animal (high grade) 



Animal (low grade) 



Garbage 



Tankage (n. o. s.) 



Dried blood 



Cottonseed meal 



Fish scrap (dried) 



Fish scrap (acidulated) , 



Castor bean pomace 



Hair 



Hoof meal , 



Horns 



Hide scrap 



Acidulated leather 



Leather scrap or meal 



Wool waste 



Tartar pomace 



Peat(dned) 



Natural guano 



Base goods 



other nitrogenous materials . 



18.8 

 24.3 

 15.6 

 15.6 

 13.0 



11.0 

 7.0 

 3.3 

 6.3 

 13.8 

 8.4 

 9.0 

 6.0 

 6.6 

 18.0 

 15.0 

 15.0 

 12.0 

 9.0 

 13.0 

 7.0 

 .9 

 1.5 

 7.8 

 2.4 

 6.1 



285,983 

 125, 283 



37, 230 

 33 



20, 237 



185, 491 



108, 775 



123, 835 



5,994 



37, 189 



306,399 



28, 769 



17,234 



19, 948 



9,254 



6,340 



200 



218 



75 



18,078 



1,135 



2,709 



742 



67, 715 



518,378 



39, 162 



234, 794 

 103,356 



6,099 

 595 



7,098 



134,446 



82,209 



96, 142 



4,770 



25,799 



273, 876 



28, 813 



24, 215 



36, 481 



7,179 



5,681 



74 



921 



13,892 

 1,002 

 2,893 

 1,892 



52, 549 

 502, 132 



29,259 



18,620,200 



15,039,300 



5,376,500 

 3,044,400 



580,800 

 500 



263,100 



2, 040, 400 



761, 400 



408, 700 



37,800 



513, 200 



2, 573, 800 



258, 900 



103,400 



131, 700 



166,600 



95,100 



3,000 



2,600 



700 



235,000 



7,900 



2,400 



1,100 



528, 200 



1,244,100 



238,900 



4,414,100 

 2,511,600 



95, 100 

 9,300 



92,300 



1,478,900 



575, 500 



317, 300 



30,100 



3.56,000 



2,300,600 



259, 300 



14.5, 300 



240, 800 



129, 200 



85, 200 



1,100 



11, 100 



180,600 

 7,000 

 2,600 

 2,800 



409, 900 

 1, 205, 100 



178, 500 



100 



28.9 

 16.3 

 3.1 



1.4 



11.0 



4.1 



2.2 



.2 



2.8 



13.8 



1.4 



.6 



.7 



.9 



.5 



1.3 



2.8 

 6.7 

 1.3 



100 



29.4 



16.7 



.6 



.1 



.6 



3.8 



2.1 



.2 



2.4 



15.3 



1.7 



1.0 



1.6 



.9 



.6 



.1 

 "i.2 



2.7 

 8.0 

 1.2 



The total amount of ammonia used during 1917 was more than 

 18,600,000 units of 20 pounds, and the total amount used during 1918 

 exceeded 15,000,000 units. 



The principal source of ammonia during both years for which data 

 were obtained was sodium nitrate, nearly 30 per cent of the ammonia 

 being derived from that one source. 



The second source in importance was ammonium sulphate, from 

 which about one-sixth of the ammonia was derived. 



Among the organic sources of ammonia, tankage and cottonseed 

 meal are by far the most important. The proportion of ammonia 

 derived from animal tankage of high and of low grade was less in 1918 

 than in 1917, owing, probably, to the great demand for tankage as 

 feed. The proportion derived from cottonseed meal increased from 

 13.8 per cent in 1917 to 15.3 per cent in 1918. 



