Atlanta semi-weekly journal. (Atlanta, Ga.) 1898-1920, 1912-09-24

gen PHOSPHORUS and potash it takes to
make one bushel Of wheat, and the
amount for one bushel of oats. want
to know the amount that is contained
In stalk and grain and all. Would also
like 10 know the amount of the differ-
ent elements It takes to produce one
bushel Of corn.
A crop OF 20 bushels OF wheat weigh
ing 1900 pounds per acre will remove
from the soil about 25 pounds of nitro
gen. 1913 pounds OF phosphoric acid, z
pounds OF potash and 1 pound of lime.
The straw from this crop weighing
approximately will remove 10 pounds of
nitrogen, rs pounds OF phosphoric acid,
2S pounds Of potash and pounds Of
lime. A crop OF oats yielding so bush
els and weighing 1000 pounds will re-
move about 80 pounds OF nitrogen, IL
pounds Of phosphoric acid and 10
pounds OF potash and Is pounds of
lime. The straw estimated to weigh
1000 pounds will remove 10 pounds of
nitrogen, pounds of phosphoric acid,
35 pounds Of potash and s.5 pounds of
lime. A crop Of corn yielding e5 BUSH
els and Weighing 1900 pounds will re-
move about 40 pounds of nitrogen. IS
pounds Of phosphoric acid. is pounds
OF potash and 1 pound Of lime The
stalks estimated to weigh 5000 pounds
viii remove SO pounds of nitrogen, 2
pounds Of phosphoric acid, As pounds
OF potash and IL pounds of lime.
With this data before you, ii will
be simple matter to figure out how
much a bushel Of each Of these crops
VIII remove from the land, and about
what amount theoretically of plant food
will have to be returned to the soil
Tn rsr4nw~ -.
crops. OF course, IL the yield is small
er than the figures given here. there
would be an approximate decrease in
the amount of fertilizing constituents
removed. Moreover, these figures are
only approximate. because in some sea-
sons the per cent Of stalk or straw.
as the case may be, will be much
greater in proportion than the WELD
o. grain here indicated, while some
times the reverse will be true. How
ever, this is probably as near to the
correct data concerning the matter as
we can give you at this time. You
realize, OF course, that the season, soil
and amount Of rainfall all exert an in
fiuence on the setting free of plant food
and its assimilation by the plant. Nat
urally, one would conclude from these
hgures that much more nitrogen ought
70 be applied to the land than Is or
dinartly used. In most instances we
believe it advisable to use more nitro
gen, but think IT should be supplied
in the form Of green manures or the
refuse from the stable.
WHEAT BRAN VERSUS OATS
z. b. N, Tuscaloosa, Ala, writes:
We wish to know II we canno tsubsti-
tute either wheat bran or corn meal
FOR oats in the ration suggested by
you. Oats are sold at $50 per ton in
this market. wheat bran at S2I and
corn meal at $40 per ton. II this sort
Of mixture would make the food richer
than necessary. could we not use some
cotton seed hull bran to reduce IT?
There would be no objection to sub
stituting wheat bran for oats in the
mixture to which you refer. This
would increase the protein somewhat
however. and reduce the carbohydrates
/ and fat. To substitute corn meal for
oats or wheat bran would change the
character Of the ration quite consider
ably. decreasing the protein and in
creasing the carbohydrates and fat. In
other words. 100 pounds OF a mixture
containing 500 pounds of alfalfa, 4OC
I pounds OF bran. $50 pounds OF corr
meal and 24O pounds Of cotton seed
meal. would contain approximately
1913 pounds Of digestible protein, AZ
pounds Of digestible carbohydrates. and
3.s pounds Of digestible fat The same
mixture substituting bran for oats
would contain per 100 pounds, 49,
pounds Of digestible protein, A. IS
I pounds OF digestible carbohydrates and
IS pounds Of digestible fart: while q
mixture of 500 pounds OF alfalfa, $50
pounds OF corn meal and 240 pounds OF
/ cotton seed meal would contain pei
/ 100 pounds. approximately IL.
pounds of digestible protein, 4s.
pounds Of digestible carbohydrates and
4 pounds Of digestible fat. 1t is diff.
| ficult for me to see. therefore, how
hull could be used in any Of these mix
lures to advantage as none OF them
would hA too rich would consular this