Atlanta semi-weekly journal. (Atlanta, Ga.) 1898-1920, 1902-03-13
HOME MIXED FERTILIZERS.

me following letter has just been re-
-AsHBuRN. Ca, March I. 1907.
sFIarvfe Jordan. Agricultural Editor
Monticello, Ga
Dear sir: VIII you please publish an ar
le in the Semi-Weekly Journal giving
= rule for finding the percentage or
kosphoric acid. ammonia and potash in
Il king different amounts OF acid. cotton
ed meal ard kainit together for ferdl-
arz. I am satisfied such an article would
OF great help 70 the farmers in this
ction. Thanking you In advance for the
SUBSCRIBER"
De has been quite noticeable the incrcas-
: interest manifested BY farmers In the
rtfIIzer situation A large number OF IN
Eiries have been constantly coming In
king about Tire mixtures Of certain IN
sedients. and what such mixtures would
|aiyze and showing proportions OF the
rec elements OF plant foods A general
'sposftion has been manifested along the
IL OF securing fertilizers best suited for
e different crops. and to abandon the
N practice OF using one brand for every
ling which was always bad business
|Lf the farmers would now undertake 70
udy the methods OF mixing the different
|gredieuts in such proportions as viii
eeded in the different elements used.
ch farmer would soon become his own
manufacturer and get just the kind OF
bods he wanted for his crops. Sub
|riber. asks for information which is
bite valuable. but which even after
ling explained In as practical and sim
Il way. as can be done. viii nevertheless
|quire some thought and study on the
TT OF the mixer TO secure the results
anted-
a Plain Method.
Not being a chemist. cannot explain
|e system by any regular rule used by
dentists, but can only give the plan
Eopted by myself in working out differ
be formulas. A ton OF fertilizers weighs
DO pounds. ard 1 per cent OF this would
/ 20 pounds. We must use the ton basis
figuring out the percentage OF plant
lod in any Of the different chemicals
ed. For example. let Us take a phOs-
|horic acid analyzing IA per cent available
hosphoric acid 20 the ton. and desire 20
Be enough OF IL in a mixture TO secure
per cent phosphoric acid Multiply the
per cent BY 100 pounds and divide by
boo pounds. and you have per cent
hosphoric acid. II the. other 100 pounds
made up OF a material containing no
|h0sphoric acid. The units. decimals, etc,
|Ee1 BY the chemist are omitted because
Is not necessary. Cotton seed meal an
yses per cent ammonia 10 the ton, or
h pounds; 800 pounds cotton seed meal
multiplied. therefore. by and divided by
Zoo would give you ? per cent ammonia
Lainit averages about II IL per cent pot
81 10 the ton. or 80 pounds OF potash in
he ton Of kainit; so pounds OF kainit.
herefore. multiplied BY l. IL and divided
b 400. the ton basis would give you full
Per cent potash IN the mixture. You
Eould then BY using the above examples
3 make up a ton OF commercial fertilizers
ave a goods which would safely analyze
s follows: loo pounds phosphoric acid,
per cent acid: so pounds cotton seed
heal. 2 per cent ammonia; 800 pounds
Amt. 3 per cent potash. Total available
B per cent OF plant food. making a stan
ard grade goods II you wanted fertil-
ger 10 analyze per cent phosphoric acid.
per cent ammonia and per cent potash.
sing a IA per cent acid 10 get the phos-
hate. cotton seed meal for ammonia and
amt for potash, you viii still follow the
ule. and II viii work out as follows: Null
Eply 1.Z50 pounds OF the acid by the "a
Ier cent available and divide by 20c0. you
rin have S75 per cent available phOspho-
c acid. with enough phOsphoric acid in
he cotton seed meal TO bring the percent
&c up TO per cent. To get the per cent
q ammonia multiply the 80 pounds. Of