Atlanta tri-weekly journal. [volume] (Atlanta, Ga.) 1920-19??, 1920-07-03
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- ~ So EDUCATIoN:
-Ely1- AND SUCCESSFUL FARMING
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-1n=MS= By ANDREVM cSOlXE
Plant Disease Control in Gardens
By AMDREWM cS0lEE

At this season of the year. a large
number of letters are received ask
ing for remedies to be used against
diseases which destroy garden crops.
Most of these troubles are caused by
fungi which are a low form of plant
life and live as parasites on other
crops. Then of course, there are bac-
terial diseases which affect plants
such as the wilt disease. In this
case, tn circulation of water is stop
ped and the plants are, as it were,
choked to death. Then there is
third class of disease which destroy
garden crops. These are of a physi-
illogical character and generally arise
from the improper management of
garden soils. Most of these plant
diseases are not difficult to recognize.
and, when their nature and character
are known, a great deal can be done
toward combating their spread or
Graduating them altogether. This
question is of such great importance
at this time that a summary has been
prepared of the disease affecting gar
den crops. Our readers should ex-
anime this record carefully. 1t con-
stitutes the best data available on
this subject. The facts presented
bear the Endorsement of the experts
of the Georgia State College of Agrt-
culture.
Club Root Cabbage. This is widely
known. very destructive, and easily
recognized. 1t is an enlargement of
the main or lateral roots. The affect
ed parts, as a general rule, break
down, thus the cause of the trouble
is liberated into the SOIL AS this
trouble can be noted on the seedlings
closely, to all plants, destroying
those that are infected. 1t is a soil
condition, and, therefore, an infected
field should not be planted success
s1vely to cabbage. 1t is said that rs
20 80 bushels of air slaked lime per
planting, will give beneficial results.
This disease affects cabbage, cauIf-
flower, turnips, rutabagas, colIards,
radish, and most other plants of the
mustard family.
Potato Blight. This fungus ap-
spots usually show first near the tip
or margin. 1t progresses more rapid
ly during rainy weather and may be
curtailed in growth during the
drouth. Under especially humid con-
ditions white down may be seen
spores Of this disease are washed off
by the rains and go into the ground
where they affect the tubers, some
of them decaying before they are dug,
others while in storage.
Repeated spraying with Bordeaux
mixture Will to great extent con-
troll this disease
Potato Scab. This is disease par
tcularly of the tuber. 1t first ap-
pears as small. reddish or brownish
spot upon the surface. 1t extends
outward and deepens in color and Is
denied with a development of an ir-
regular scabby, corky tissue. A great
los comes In the depreciation in the
sale value of the crop. This trouble
is more prevalent in alkali soils. 1t
is found more or less in the soil, and
and once land becomes infested with
1t, potatoes should not be grown
thereon. 1t may also attack beet%
turnips and cabbage, and, therefore.
one should be careful in choosing the
rotation. To be sure that it is not on
the seeds at the time of planting.
the potatoes should be treated with
I'd for. two to three hours in a solu-
ton of formalin composed of one pint
of strong formalin to forty gallons
of water. then taken out and thor
oughly dried before being out for
seed.
Onion Smut-This- is another soil
fungus, and is, therefore, hard to
control. 1t attacks the very young
seedlings through their delicate lear
sheaths. If an onion can pass this
stage without becoming infected it
is all right. Therefore, onions grown
from sets are immune and it is only
those grown from seeds that suffer.
Another method of overcoming thu;
trouble is to sprout and grow the
seeds in unaffected beds and then
set the little onions in the field.
Where soil is known to be infected
formalin solution composed of one
pint of formalin to 25 to 80 gallons
Of water can be applied to the soil
at the rate of 500 to 700 gallons per
of rs to 125 bushels per acre on
freshly prepared soil just before
seeding has also been found useful
Corn Smut-This common affection
of our corn fields needs but little de-
scription. 1t may enter the plant
through practically any yolAlg grow