Atlanta semi-weekly journal. (Atlanta, Ga.) 1898-1920, 1912-08-27


cent Of the wheat. I will have to seed
something out OF the guano What do
you think was the trouble?
IL is very surprising that formalin
properly used should injure the germi-
nation Of wheat as IL is a standard rem
edy and has been used on the college
farm for a number of years with sue
cess. 1t is so extensively used that
some mistake in it's application was GER
tainly made or 1t would not have affect
ed the termination of your wheat The
correct method of using formaldehyde
for the treatment Of smut is as follows.
Take one pound of formRlin (the trade
name for a 40 per cent solution OF for
maldehydel and dilute IT with SO gallons
OF water. Each bushel Of grain requires
about one gallon Of the solution The
wheat to be treated should be piled upon
a floor, and stirred while the solution
is being sprinkled over It, Continue
more OF the solution than is necessary
to do this is injurious The seed should
then be dried. This method Is not sue
cessful with formalin that IN not 40
per cent solution, and since this material
rapidly loses it's strength 1t should be
tightly corked. II you do not follow
with the utmost care or use a solution
about the strength indicated, or leave
the grain exposed to the treatment for
an unnecessary length of time, your
wheat may be injured. We have had
such large experience with formalin for
the destruction Of smut that we can
positively say IL will do the work salts.
factOrily If properly handled.
TREATED VERSUS UNTREATED
ROCKS.
+. 8. J., Jefferson, Ca, writes:
would like to have your opinion in re-
gard to the relative efficiency OF
ground phosphate rock and acid phos-
plate for Georgia soils.
There Is much TO be said in favor of
the use OF finely ground phosphate
bearing rock. In a trial made on the
college farm last year an area Of land
was divided into six plats On half of
these plats no lime was applied and on
the other half 1000 pounds Of ,caustic
lime was applied per acre. on the plat
on which no lime and no fertilizer was
applied the yield of corn was 13 BUSH
els; where 400 pounds Of floats was
applied the yield became S5.s bushels;
and where 400 pounds OF acid phos-
phate was applied the yield became 3s
bushels. On the section to which lime
was applied at the rate OF 1000 pounds
per acre with no fertilizer the yield
was IS bushels; with 400 pounds of
floats the yield was SIS bushei:
and with 400 pounds of acid phosphate
the yield was STA bushels. You will
thus see that the use OF lime gave a
substantial increase. At the same
time the relative increase from the use
OF floats and acid phosphate was vir-
$50
be regarded as in the best physical
condition or high in its content Of veg
etable matter. Seasonal conditions,
however, may have affected the yields
very materially and II would not be
wise to conclude from this one test
that IL would be advisable to use the
phosphate rock in preference to the
acid Phosphate. There is much diver
sity Of opinion on this subject It
would appear, however, that most per-
sons who have studied the question
seen to favor the use of the acid phos-
phate on soils which are low in vege-
table matter. On the other hand the
finely ground rock seems to be giving
good results on soils which are we'll
supplied with vegetable matter As
our soils in Georgia can not be re-
ga-ded as high in nitrogen and vese-
table matter We think 1t problematical
yet as TO whether the phosphate rock
should be used in any considerable
quantities save on farms where crop
rotations have been pursued for some
years past.
wish 1 could give you a more posi-
tive statement concerning this matter.
but think we must regard this whole
problem as still unsettled until fur
Their experimental data which we hope
10 secure from our demonstration field
and from the test plate which we ex
pect to establish in various parts of
Georgia aid US in reaching more at-
isfactory conclusion Of this important
problem