12 
BULLETIN 1280, U. S. DEPARTMENT OF AGRICULTURE 
STANDARD FERTILIZER MIXTURES FROM CONCENTRATED 
MATERIALS 
In Table 6 are listed the different fertilizer analysis formulae rec- 
ommended by the five agricultural conferences already referred to 
for adoption. The States represented at these different conferences 
were: (A) Maine, New Hampshire. Vermont, Massachusetts, Rhode 
Island, and Connecticut: (B) Xew York, Pennsylvania, New Jersey. 
Delaware, Maryland, Virginia, and West Virginia : (C) Ohio. Missouri, 
Michigan, Indiana, and Wisconsin: (D) Arkansas, Texas, and 
Louisiana: (E) North Carolina, South Carolina, and Georgia. 
Table 
6. — Fertilizer-analysis formulae recommended by five regional agric 
conferences for adoption 
ultural 
A 
B 
C 
D 
E 
A 
B # 
C 
D 
E 
0-8-24 
4-8^ j 4-8-4 
4-8-6 4-8-6 
4-8-4 
0-10-4 
0-10-10 
4-8-6 
4-8-6 
0-10-10 
4-8-10 
0-12-4 
0-12-4 
::::::::: 
4-10-2 
0-12-6 
0-12-6 
0-12-6 
0-12-12 
0-14-4 
2-8-13 
. 
4-10-4 
4-12-0 
4-12-4 
4-12-0 
4-12-0 
4. 86-8-6 
4. S6-10-0 
4. 86-10-2 
4. 86-10-4 
4. 86-12-4 
4-12-4 
2-10-4 
. 
2-10-6 
2-12-2 
2-12-4 
2-12-2 
2-12-4 
2-12-6 
2-14-2 
2-16-2 

— i 
2-12^ 
5-4-5 
5-7-5 
~~"3 : 8-3~ 
2.43-12-2 
1 
5-8-3 

5-8-5 
3-8-5 

5-8-7 
3-8-6 
5-10-3 
3-8-8 
5-10-5 
6-8-4 
3-10-4 
3-10-6 
3-10-6 
6. 07-7-5 
8. 5-M) 
3-12-3 
7-6-5 
7-6-5 
3-12-4 
3. 64-12-3 
8-6-6 
10-5-0 

The ratios corresponding to each of these analysis formulae are 
plotted as points in the triangle of Plate III. By plotting also the 
lines, or triangles corresponding to any desired materials combined 
in groups of two or three, it may be seen at a glance what analysis 
formula can be made from any given materials. Thus 17 of the 52 
standard analysis formulae plotted in Plate III fall within the tri- 
angle DEF and may, therefore, be prepared from combinations of 
monoammonium phosphate, monopotassium phosphate, and potas- 
sium nitrate. Nineteen other analysis formulae fall within the tri- 
angle ADF and may be prepared from combinations of monoammo- 
nium phosphate, potassium nitrate, and an ammonium salt. The loca- 
tion of the remaining 16 analysis formulae shows in a similar way 
what materials may be taken for their preparation. Of these 16 
formulae 12 contain but two fertilizing elements. It may be noted 
also that a number of the analysis formulae fall within several tri- 
angles, indicating that they may be made by different combinations. 
Thus the analysis formula 3-10-6, numbered 22 in Plat.^ Ill, falls 
within the four triangles DEF, ABE, DFB, and DFC, and may be 
prepared from monoammonium phosphate and monopotassium phos- 
phate in combination with (1) an ammonium salt or (2) potassium 
nitrate: or from monoammonium phosphate and potassium nitrate 
in combination with (3) a phosphoric-acid salt or (4) potash salt. 
