The Delta independent., 1910-06-10

and burn all infested trees as soon
as discovered, no matter how
slightly affected. This treatment is
very successful when thorough, the
disease being one of the easiest of
all orchard diseases to control, es-
pecially when the fight is carried on
systematically throughout a commu-
nifty. Complete eradication is diff
cult.
Rosette.-This disease is control
led with ease by the same treat
ment as for yellows, except that in
spection should be early in the sea-
son.
the same as Cor yellows, but the
early symptoms are more difficult to
recognize. On this account the dis
ease may be harder to control.
Cherry Diseases. Brown Rot
The treatment should be the same
as that for the same disease of the
/ peach.
Black Knot.-Use the same treat
ment as that recommended for black
knot of plum.
Leaf Blight.-Spray with Bor-
deaux mixture as soon as the foli-
age is out, and again ten days or
two weeks later. In severe cases a
third and fourth application may
be necessary. On nursery trees the
new leaves must be sprayed as they
appear through the season.
Powdery Mildew.-Spray with
Bordeaux mixture about two weeks
after the leaves are out and repeat
two or three times at intervals of
ten days. In case of nursery stock
about six applications may be nee
essary.
Grape Diseases. Black Rot
Clean up and burn all dead branch
es, leaves and rotten fruit of the
previous year in early spring. Spray
with Bordeaux mixture when the
buds are swelling so as to cover
ali the wood posts, trellises, etc,
as well as the vines. Ten or twelve
days later when the grapes are in
bud, make the second treatment
The third treatment is made when
the fruit has set Repeat the spray
ing at intervals of ten days to two
weeks in this manner until
maturity. To avoid discoloration OF
the fruit, the amoniacal copper car
Donate solution may be substituted
for the Bordeaux mixture for the
last two sprayings. In an average
season, six treatments should be
Sufficient, but in rainy or unfavor-
able season, eight applications may
be required in order to obtain good
results.
Anthracnose.-Ihe treatment for
this disease is the same as for the
iron sulphate solution is preferred
by many for treating the dormant
vines.
Downy Mildew or Brown-rot.--
Treat the same as for black-rot ex
cept that the first two or three
sprayings may be dispensed with as
this disease does not appear early
in the season.
Strawberry Disease.'-Leaf Blight
Spray with standard Bordeaux mix
ture every two weeks during the
season. beginning after the crop
is harvested. Four to six applica-
tions are required.
Success in spraying is to be OBJ
tanned only by careful attention to
details in two principal directions:
Q) Sprayings must be timely, and
the time varies with the particular
conditions. The operator should
know what disease or diseases he
is expecting to prevent by the appli-
cation OF the spray. and should
thoroughly post himself beforehand
as to the correct times and inter-
walls for spraying for that particu-
lar disease. The spray must be
applied ahead of the infection period
of the fungi. (2)The spraying should
pe thoroughly done. In dormant
spraying, a coarser spray can be,
used than in summer spraying, be-
cause the object is merely to form
complete coating of the spray
over the wood. In summer spray
ing, however, an exceedingly fine,
mist-like spray reaching every por-
ton of the plants, and covering with
minute dots. preferably, no larger
than fly speck. every square inch
OF the fruit and foliage is neces-
sary. 1t Is not necessary that the
minute specs of the spray should
entirely coalesce into a coating, al
though where second or third
treatment is made this often re-
suits. But there should be no large
spaces, the size of ones thumb nail
not thoroughly peppered with the
spray.
Identification of Plant Diseases.
When the farmer or fruit grower
is in doubt as to the character or
identification of any plant disease,
it is best to write to the aggicul-
tural experiment station of his state
or to the United States Department
of Agriculture, sending specimens
for examination, as directed in the
bul1etins In most caaaq printed