The Idaho Republican. [volume] (Blackfoot, Idaho) 1904-1932, 1910-05-20
PROPER FEEDS FOR THT sell
Some Plain and Interesting Figures
Relating to the Removal OF
Plant and Effects.

By Prof. Cyril G. Hopkins University
of Illinos.)
In three-year rotation of corn,
oats and clover, let us assume yields
OF 100 bushels per acre of corn and
oats, four tons of clover and four
bushels of clover seed.
We may SOW cowpeas in the corn
the last cultivation and possibly pro
dnce a catch crop of one-half ton to
the acre.
We will plan to husk the ear corn
and leave the stalks on the land to
be disked down for seeding oats and
clover
The oats should be cut as high as
possible and the threshed oats straw
should be spread over the land eth,
er before or after rotting, as may be
found best.
The third year the clover may be
clipped perhaps two weeks before
haying and left lying on the land, the
second crop being harvested later for
seed, using buncher attached to
the mower so as to avoid raking.
The threshed clover straw should
be spread over the land, and If rock
phosphate is used it may be applied
and plowed under with all of the ac-
cumulated organic matter in prepare,
ton for the following corn crop which
would begin the second rotation
These three crops removed about
lib pounds of nitrogen, while the clo-
yer and cowpeas returned about 1872
pounds of nitrogen and, together with
the cornstalks and oats straw, fur
nished large supply of humus.
This is a system of grain farming
planned to maintain the supply of hui
mus and nitrogen
If the yields are cut in two the
tasis of the system remains the same.
Many other rotations for grain
farming might be followed, but in all
cases liberal use must be made Of le-
gume crops, catch crops, other green
manure crops and crop residues in or.
der to supply humus and nitrogen.
In live stock farming take five-
year rotation, including corn two
years, oats with clover and timothy
seeding the third year, and two years
of clover and timothy, using one year
for hay and the other for pasture. as
Stunning the same yields as before.
Shock one-half of the corn or put it
in the silo; husk the other half and
use the oats straw for feeding and
bedding.
The four crops will remove from
the soil about 369 pounds of nitro
gen and the clover hay. will contain
about 1870 pounds, which we assume
was secured from the air, making 489
pounds of nitrogen in the total feed
and bedding.
If one-half of this is recovered in
the manure and returned to the land
there would be a deficiency of 1924
pounds.
But two-thirds of the nitrogen can
be recovered by feeding upon cement
floors and liberal use of straw and
shredded fodder for bedding, thus re-
ducing the deficiency to 43 pounds.
The pasturing may gain IL pounds
of nitrogen. BY feeding more or less
upon the fields and by leaving consid-
cradle clover in the pasture to serve
as green manure this small deficiency
can be replaced. but to maintain or
increase the supply of humus and nj.
trogen in the soil is by no means an
easy problem, even with live stock,
farming
Keep II mind these two words,
phosphorus nd humus.
II these are increased in the soil
the farm will be growing richer and
more productive, but whoever re-
moves the phosphorus or destroys the
huinus more rapidly than they are re.
placed will have poorer land year by
year with poverty as the only future
for the children who continue the
same ruinous system.
A 1O0-bushel crop of corn requires
% pounds of phosphorus; a 5O.busheI
crop Of wheat. is pounds; a Atom
~f -