Atlanta semi-weekly journal. (Atlanta, Ga.) 1898-1920, 1911-01-20

sumo I8AE[E-NIUA
tioa Of fertilizers 70 cotton have recent
" been secured IN the demonstration field
OF the state College OF Agriculture These
results are Of such vital and important
concern that they should be in the hands
Of every farmer IN the state and studied
~ him in planning and preparing for the
crop OF 1911. The land on which these
experiments were conducted was an old
WORKOUT upland red clay soil similar 70
that frequently found in the Piedmont re-
Rion. This land had been prepared for
the crop BY deep breaking. but was vir-
tually devoid OF vegetable matter and In
very bad physical condition No doubt
the yield could have been Increased By an
application OF caustic lime at the rate OF
one ton per acre or not less than two
tons OF finely ground limestone rock.
Some win say that the results obtained
on this soil are not applicable 20 the
sandy regions OF the coastal plain and
other sections OF the state where the type
Of soil T. dissimIlar 10 that found in Pied
mont Georgia. The principal difference in
the erect OF the application Of these fer
Gilixers 20 soils OF a sander character will
lie in the fact that the potash win prove
more serviceahle in the plant economy
and that the amount applied Of this par
sicular element should be considerably
Increased.
MORE PHOSPHATE POSSIBLE
Even more phosphates might also be
used 10 advantage. On some Of these
lands more nitrogen will rot be neces-
sary. but on the older soils double the
amount viii give better results In most
Instances. vegetable matter viii prove As
beneficial on sandy soils as on the clay
soils OF the Piedmont section Bearing
these factors fn mind. therefore. IL viii
not be dfficult for a man situated In the
coastal plains region 70 adjust these. fer
tllfzer formulas 80 as 70 insure better re-
suits from the use Of supplemental plant
foods next year than he has ordinarily
been securing Up 70 this time.
n the test under discussion nine pats
were compared To the first no fertilizer
was applied and the yield OF seed cotton
vas 80 pounds per acre This is not
Tar from the average yield which would
Sc secured on ordinary land which had
been fairly well cultivated but In the
absence OF fertilizer OF course. a farmer
could not AFFORD 70 grow cotton II this Is
me largest amount he could hope 70 Sc
cure The fact that many do not exceed
this yield Is deplorable In view OF the
large yields which may be grown with
comparafiveIy little EFFORT on the part Of
the farmer OF course, a man can prob
ably exist who makes $50 pounds OF seed
cotton per acre. but he can not be sue
cessful and prosperous farmer.
On the second plat ten tons Of yard
manure was used with 50 pounds Of mu-
riate OF potash and the yield OF seed
cotton was 81 pounds per acre. or more
fhan twice as much as on the no-fertil-
her plat On the third plat ten tons
OF yard manue and 20 pounds OF acid
phosphate was applied. the yield In this
case being rs pounds OF sed cotton or
about the same result as was secured
frcm the uze OF potash and manure. On
me fourth plat ten tons Of yard manure,
40 pounds OF high-grade acid phosphate
ard 50 pounds OF muriafe OF potReh were
used. the yield In this instance being
LIS pounds Of seed cotton. or more than
three times as much as was secured from
the use OF no FERTILIZER. This Indicates
how essential phosphoric acid and pot
ash become on most Of our soils. X also
shows that a liberal application OF these
important elements should be made, and
that they apparently give better re-
SUITS IN combination than where used
alone
On plat S. ten tons OF yard manure
and 100 pounds Of potash were applied.
fiss yield in this instance being SS6 pounds
Of seed cotton. This Il VIII be observed
was comparatively little more than was
secured from an application Of 30 pounds
OF acid phosphate or 50 pounds Of muri-
ate OF potash when used separately. On
plat {. ten tons OF yard manure. 400
pounds or acid phosphate and 100 pounds
OF potash were applied. the yield being
l117 ponnds OF seed cotton On plat Z,
ten tons OF yard manure was used with
zoo pounds Of acid phosphate and 100
pounds Of potash applied at the time Of
planting. and 3 pounds Of nitrate OF
soda used a. . top dressing From
this plat 1.ss5 pounds OF seed cotton
were gathered
INCREASE is SHOWN.
Notice the substantial increase here.
Apparently the nitrate OF soda was
needed 70 stimulate the plants during a
certain period OF their development. and
moreover, the complete fertilizer clearly
outstripped the other applications. On
pIats = 3 s. and the manure was
broadcast. but on plat s ten tons OF
yard manure were applied In the drill
rows together with 40 pounds OF acid
phosphate and 10 pounds OF potash. with
IS pounds OF nitrate OF soda used as a
top dressing. In this Instance the yield
became 1854 pounds Of seed cotton per
acre Notice that the use OF the yard
manure IN the drin row where il he'2ed
to retain moisture around the roorz OF
the plant IN dry -es<t-ss gave a dis
tinct Increase In yield. this being appar-
entity the best method OF applying ma