Atlanta semi-weekly journal. (Atlanta, Ga.) 1898-1920, 1917-03-02

ldIy pipe
[ bills cement l yard sand, l 1-2
yards gravel, 4 inch and inch terra
Gotta pipe to connect with house and
disposal beds.
TANKAGE AS A SOURCE OF PLANT
FOOD.
A. b. ", jefferson, Ca, writes l have
some tankage that is guaranteed to con-
stain per cent of nitrogen and ID per cent
of total 'phosphoric acid, and some cotton
seed meal that is guaranteed to contain 36
per cent protein, 80 per cent Of fat, IA
per cent of fiber, and 81 per cent of
Donydrates. Which is best and cheaper to
mix with acid phosphate when ] can buy
them both at the same price?
We presume that the total phos-
phoric acid contained in the tankage is
available and if that is so ton of this
material contains 100 pounds of avail
able nitrogen and 260 pounds of avail
able phosphoric acid.
A ton Of cotton seed feed meal of the
grade mentioned would contain roughly,
100 pounds nitrogen, so pounds of phos-
phoric acid and 80 pounds of potash. We
think the value of the plant food con-
stituents in the two would be about
the same. Of course you know the pot
ash cannot be obtained except through
cotton seed meal. Hence, this material
.Shas some advantages in the respect that
it contains some of this important ele-
ment, and we would be disposed to use
the cotton seed meal If 1t can be pur-
chased at the same price per ton as the
other material. A mixture of equal
parts of acid phosphate and the meal
in question would give you a fairly
good formula. 1t would contain approx
imately per cent of nitrogen, 90 per
cent of phosphoric acid and g per cent
of potash The formula you propose
making would contain approximately 81
pounds of nitrogen, 217 pounds of phos-
phoric acid and Is pounds of potash
per ton. This formula would contain,
therefore, on a percentage basis, approx
imately 2.6 per cent of nitrogen, 1913
per cent of phosphoric acid and Just
trace of potash.
USING NITRATE OF SODA AT
PLANTING TIME
O. r. G., Rocky Ford, Ga, writes: Please
let me know what you think OF putting
about twenty pounds Of nitrate Of soda
to the acre in the planter With v the seed ss
as means Of distributing it7 Would the
soda damage the seed in any way?
We would never mix nitrate of soda
with the seed before planting them. II
is best to put nitrate Of soda under
the drill row together with whatever
other n1trOgenOuS material you may NC
using for fertilizing purposes. You I'M
derstand. OF course. that the young plant
has a store of seed within it upon
which It primarily draws until 1t estab-
fishes itself in the soil, and as soon as
termination has taken place and the
plant makes it's way to the light and the
young, tender. fibrous roots, by which
it principally feeds, come in direct touch
and relation with an abundant supply
OF quickly available and easily assimi-
lated plant food. the crop will grow
off vigorously.
DEPTH AT WHICH TO APPLY FER
TILIZER
G. VI. r.. Forsyth. Ga, writes: ! have
an that in cotton last year that
have had broken IN with a two-horse disk
rlow from : tn 10 inches deep. have
900 pounds Of 1912 guano to nut on II.
have been thinking of broadcasting same
end turning under with the same disk DlOw.
Would this put the guano too deep? Would
II he nest to apply son pounds this way
and 200 pounds with the seed? What
riety OF seed would Won suggest to get
ahead ~ the weeviI? Found in some
late cotton last year.
Situated as you are we would broad
cast a part of the fertilizer over the
land and work il in with disc. This
should not be done until a few days be-
fore you are ready to plant the crop.
The rest of the fertilizer may be put
under the drill row. Our thought would
he to broadcast about two-thirds Of the
fertilizer and use about one-third under
the drill just at the time of planting the
seed 1t is desirable that part Of the