Sl tet eel 
2 BULLETIN 798, U. S. DEPARTMENT OF AGRICULTURE. 
1917, for the first nine months of 1918, and for estimates for the 
remaining three months of 1918. A schedule for tankage producers 
was sent out toward the end of the year, and cailed for reports for 
the two calendar years 1917 and 1918. Data are thus available for 
. a study of the fertilizer industry during two years, both of which 
were war years. No comparison with prewar years can be made, 
for lack of data, but a future survey of the industry in years after 
war activities have ceased will afford interesting comparisons. 
MATERIALS USED IN MIXED FERTILIZERS. 
Table I shows the amount of materials of different kinds used in 
the manufacture of mixed fertilizers during the years 1917 and 1918. 
Taste I.— Materials used in producing fertilizer as reported by fertilizer manufacturers. 
[2,000-pound tons. ] 
Kind of material. 1917 1918 Kind of material. 1917 1918 
Agricultural lime......-....- 32, 602 40,252 | Nitrogenous materials—Con. 
Agricultural salt. .......--.-- 2,474 2,650 | Ammonium phosphate. ... 20, 237 7,096 
Acid phosphate.....-..------ 3, 746, 693 |13,554,000 | Tankage: » : 
Potash materials: | Animal tankage (high 
Potassium, sulphate......-- 13, 420 16, 808 PIAdC) 2-2 eee eee eee 185, 491 134, 446 
Potassium muriate....---- 12,124 19, 189 Animal tankage (low : 
Potassium nitrate.......-- 14, 478 17, 286 STade) =o -ceeeroeeeee hae 108, 775 82, 209 
Potassium carbonate. ..--- 7,656 5,706 || Garbagetankage.........-- 123, 835 96, 142 
BON aa aa ooerocsao er 2,175 368 Tankage (0, 0.5S.)...------- 5,994 4,770 
Manure sats ns o25--s--~ = 1, 684 194 i. Dried blood... 2 22-25-.52ee- 37, 189 25, 799 
Nebraska potash......-.-- 7,201 18, 815 Cottonseed meal..-......-- 306, 399 273, 876 
Cement dust........-.---- 6, 489 6,301 | Fish scrap (dried)........- 28,769 28, 813 
MaTMACeGUSL---o.-s----- == 8,499 12,105 Fish scrap (acidulated)...-- 17, 234 24,215 
Roasted alunite.........-- 667 1,999 Castor bean pomace.....-- 19,948 36, 481 
Relpiadried) sos se ccccesss 3, 064 4,777 Pigteaee 53. een esos 9, 254 7,179 
Kelp (ash). ...------------ 2,929 3, 722 SiGol Meal 2 a. ase=s== == 6,340 5, 681 
ielni(chan)so- a 26--se's = 16 348 HOIMS 2 seco bees eeee 200 74 
Tobacco waste........---- 37, 218 30,816 Hide scrape=_tcee- -= sce 218 921 
Wood ash and other plant Leather scrap or meal..... 18, 078 13, 892 
PH. -0 5555252 2s5see 555 be 6, 523 7,458 Leather (acidulated)....... 15 \oeaaeee 
Manure ash... ._.--.-2--- 2,197 2, 768 Wool Wast@—--e--c---- = —ee 1,135 1,002 
Moeldspate: oe. s---eee = 601 134 Tartar poMace.........--- 2,709 2, 893 
Sugar factory waste...-.---- 5,071 5, 250 Peat, (dried) a2 5-2. -.eeemeee 742 1, 892 
Other potash materials--.. 33, 863 34, 898 Natural: Saanoseces--s-=— 67, 715 52,549 
Nitrogenous materials: Baseigoogs: =... s2s-ceehses 518, 378 502, 132 
Sodium nitrate.......-..-- 285, 983 234, 794 Other nitrogenous mate- 
Ammonium sulphate. ....- | 125,283 | 103,356 Mais ce eee eee 39,162 29, 259 
GCyanamid —=7-=--.2-5--+], | B¢,230)) 6,009 sip Ballets. see aeeee oe. eee er 161, 932 216, 764 
Nitrate of lime..........-- 33 | 595 || Other’ materials (n. 0. S.)..- | 6, 986 11, 294 
1 Partly estimated. 
The figures for 1918 are not altogether comparable with those for 
1917, as 55 companies included in the tabulation for 1917 and for 
the first six months of 1918 failed to make reports for the last six 
months of 1918. In the case of acid phosphate an estimate has 
been made to cover the companies for which reports were not re- 
ceived for July to December, 1918. ° 
The principal kinds of material reported are acid phosphate (the 
chief carrier of phosphoric acid), potash-bearing materials, and ni- 
trogenous materials. A certain quantity of agricultural lime, agri- 
cultural salt, and filler was also reported, and a comparatively small 
ii Kraft >, iat - a 2 = “Se alos coliee aan =_— 
