Atlanta semi-weekly journal. (Atlanta, Ga.) 1898-1920, 1910-03-01

mounds of potash. BY adding 100 pounds
Of kainit to your 500 pounds of S-2-2 mix
ttre. YOU will increase the potash TO 20
mounds. which Is certainly not too much
10 use on sandy land or where there Is
a tendency for the cotton to rust badly
This is about the simplest way in which
Won can add the kainit to the S-2-2 COM
bination at best rather low In phosphorlc
acid for your cotton and also dehcient
in nitrogen. This difficulty may be over
come by top dressing with nitrate OF SODA
later on in the season, or through the
use of compost under the drill row at
the rate of two tons per acre. Unless
your land makes an unusually big stalk
YOU will find it advisable to use more
nitrogen than the formula suggested car
ries.
ANALYSIS OF THE CORN CROP.
l. M c., Centreville, Fla, writes: l
am very anxious to learn something on
the theoretical side of the fertilizer bust
ness, and will thank you for setting me
right on a certain matter. What is the
analysis of corn which gives 100 pounds OF
nitrogen in so bushels weighing 1850
pounds?
One thousand pounds of corn contains
practically 1872 pounds of nitrogen, seven
pounds of phosphoric acid and four
pounds of potash. One thousand pounds
of corn slower field-cured contains about
1914 pounds Of nitrogen, 29 pounds of
phosphoric acid and IA pounds of potash.
Sixty bushels Of corn weighing Sc pounds
to the bushel would remove from the land,
therefore, 61.20 pounds of nitrogen in the
grain and 1854 pounds in the slower, or
~ % TN oil m
crop would remove 1852 pounds of phos-
phoric acid in the grain and 10.15 pounds
in the slower, or a total of 1857 pounds.
OF potash this crop would remove in the
grain 1874 pounds, and in the slower 40
pounds, or a total of GA pounds. These
figures are based on an estimated yield
of $500 pounds of stalks per acre where
so bushels of corn are obtained. In our
experiments about $500 pounds of stalks
have been obtained from a 20-bushel corn
crop. 5000 pounds from 40-bushel crop,
and between 5000 and $500 pounds from a
eO-bushel crop. In other words, to make
90 bushels, the corn will probably be
planted little thicker, the stalks will be
more vigorous, and the yield of stalks
greater than where 20 bushels are secured.
You will see, therefore, from these fig
ures that a 6o-bushel corn crop with the
stalks practically removes from 80 to 100
pounds of nitrogen per acre.
TOP DRESSING THE SOIL WITH
EARTH.
j. L. c., Wales Lea, Ga. writes: l
have one acre of land that am putting
about so 1-horse loads of rich. earth and
leaf mold on, and 1 expect to put two
tons of good stable manure in the drill.
What kind of fertilizer should 1 use to
get the best results? The land is gray
with a good clay subsoil. It makes
about one-half bale per acre. My dealer
can only furnish me with a 1922 goods.
SO what ingredients should be added to
suit my land? What kind of lime is
used for laying hens, slaked or UNI
slaked?
1t is not always good practice to haul
rich earth and scatter over your land
unless you are satisfied that it contains
enough plant food to justify the labor.
Occasionally letters are received in
which farmers desire TO know the value
of peat. Peat is soil generally obtained
from low marshy places, and while IL
may run high in nitrogen, it is very
slowly available, hence the use of peat
under certain conditions may not, give
a sufficient return TO Justify the labor
involved in hauling. Rich earth can. of