Atlanta semi-weekly journal. (Atlanta, Ga.) 1898-1920, 1911-05-09


more phosphorus. No doubt you can Sc
cure a sack or two OF muriate Of pot
ash and acid phosphate, and in that
event it would pay you to try a 1915
formula on this land, using 1t at the rate
of 400 to 500 pounds per acre. In case
you have planted and only used 10-4,
the method 10 pursue then would be to
mix together say rs pounds of acid
phosphate and % pounds of muriate Of
potash and apply as a side application
shortly after the cotton comes up The
idea in putting it on early is to give the
plants a chance to asimilate and utilize
ii as completely as possible. Land that
has been washed and is thin would in our
Judgment need more nitrogen and pot
ash than you have suggested. In our
experience an S-S-4 has given good re-
suits on cotton on red clay land that
have been badly handled and are not
in very good physical condition. If there
were sand in them we would be disposed
to use 10 per cent of phosphorus and the
thinner they are, the more nitrogen. In
other words, on thin land in bad physi-
cal condition a 1884 or 1885 would in
our Judgment be better than 1922
OF course a 1922 might be used under
the drill row and the balance needed
secured by a top dressing with nitrate
of soda or sulphate of ammonia.
A PROGRESSIVE FARMERS IN
QUIRIES.
f. d. W., Cochran, Ca, writes: Please
tell me the number of pounds of nitro
gen, phosphorus and potash removed by
the following crops:
30 bushels corn.
500 pounds lint cotton.
30 bushels oats.
90 bushels ground peas.
100 bushels sweet potatOes.
] ton of pea hay.
1 ton soy bean hay.
100 gallons syrup.
Why do scientists recommend such
large per. cent of phosphorus in compar-
son with the other elements in fer
tinzer? It seems to me TO be alto
gether out of proportion. please publish
and will preserve your reply for use, as
all farmers should.
Fifty bushels of shelled corn will re-
move from the land approximately 4O.2
pounds of nitrogen, 1888 pounds of phos-
phorus and 1886 pounds of potash The
stalks If removed from the land would
also take away a considerable amount OF
plant food as stalks contain an UNUSUAL
'lv high per cent of potash. 1t is import
ant that the stalks be fed or at least
returned to the soil. They should never
be burned for when burned several dol
lars worth of plant food per acre VIII
be lost.
Five hundred pounds of lint cotton
will remove from the land approximate
Ily 4 pounds of nitrogen, % OF pound
OF PHOSPHORUS and % pounds OF pot,
ash In other words, bale or cotton
takes away from the soil from 30 to 90
cents worth of plant food, depending on
the cost and source from which the ma
terials used toSreplace it are derived
Fifty bushels of oats will remove
from the land approximately 29.12,
pounds of nitrogen, 12.4S pounds of
PHOSPHORUS and 1858 pounds of potash.
Dat straw is also very rich in potash
and contains considerable quantities of
nitrogen and phosphorus as we'll. Or
ldinarily, two pounds of straw are pro-
duced to one pound of grain. The oat
straw should therefore be carefully
saved, used as bedding and returned to
the land.
Fifty bushels Of groundpeaB will re-
move approximately SO pounds of nitro
gen, Is pounds of phosphorus and 10
pounds of potash.
one hundred bushels Of sweet pota-.
toes will remove from the soil approx
imately 1876 pounds Of nitrogen, Go
pounds of phosphorus and 32 pounds of
potash.
One ton Of peavine hay would remove
from the land 2s.6 pounds of nitrogen,
l1O.4 pounds of phosphorus and 29.4
pounds of potash.
One ton of soy bean hay will remove
approximately 47.6 pounds of nitrogen.
IL have been unable to find the amount
or phosphorus and potash removed by
this crop, but it no doubt approximates
quite closely the amounts taken out by
a ton of cowpeas.
One hundred gallons Of syrup would
remove from the soil 4.3 pounds of nj
trogen, IL pounds of phosphorus and
1855 pounds of potash. The amount Of
plant food removed will depend a good
deal on the character Of the syrup; that
is, fits density, etc.
These figures will give you an idea
Of the approximate draft made on the
soil by the yields of the crops men
toned
The reason for recommending the APP
plication of liberal amounts Of acid
phosphate on the part of investigators
is due to the fact that all experiments
have shown a great benefit from the
use of this material. In Texas, for in