Gloucester County Democrat. (Woodbury, N.J.) 1878-1932, 1898-08-04
: Z CABBAGE ROT.
a Bacterial Disease which Attacks Cab
bages and Allied Plants.

pages ana A4lt60 EA4AAbs
The first published account Of this
disease came from the Kentucky station
in 1890, when IL was reported as seri-
GUS disease of cabbage. Later. at the
Iowa station, an organism was found
that attacked ruta bagas, producing a
peculiar browning or blackening OF the
woody tissue, as shown in cross section
of the root. Since then the disease has
been studied at various places, notably
the agricultural department at Wash
ingtou, from which this account of the
disease emanates, and at the Wisconsin
station.
1t has been found to attack cabbage,
caulifower, ruta bagas, turnips and
quite number of allied plants some
of which are common weeds. This dis
ease causes the stunning. distortion and
whiting of the part of the plant attack
ed, finally resulting in sort OF dry rot.
Sometimes wet rot develops as a re-
suit of other causes. On the leaves the
disease begins with following near
the margins, the veins becoming brown
or black 1t spreads from the margin
toward the stems After reaching the
stem it may spread to other leaves or up
or down the plant. If the diseased
stems be cut transversely, the woody
tissue will be seen to be Drowned or
blackened, hence the name, brown or
black rot of cabbage 1t is especially
destructive to cabbage, the loss in one
locality in Wisconsin having been esti-
mated at more than 800, 900 in three
years. This disease has also caused
heavy losses in western New York, on
Long Island. around Washington and
elsewhere.
The disease is spread in number Of
ways, entrance into the plant being Sc
cured through the bites of gnawing in
sects and through the Openings along
the leaf margins. The presence of these
openings, called water pores, may be
detected by the emulation of drops of
water during cool weather. The agency
of winds in the distribution of the bac-
terra is somewhat in dispute. There are
indications that the plants may also be-
come contaminated through the seed
bed, manure and soil. On this account
the precaution of rotation and choice of
fertilizers should be carefully looked
after. No manure containing cabbage
refuse should be used, and the seed bed
should be i'll new place each year.
With these precautions, supplemented
by the destruction of insects and remoy-
al during the season Of diseased plants,
comparatively little loss need be sus-
tanned.
Bordeaux Mixture For Tomato Blight.
A bulletin of the Maryland station
calls attention to the unmistakable
value of bordeaux solution in growing
tomatoes that are likely to be affected
by slight, but adds that it can in no
sense be considered remedy or COM
plete preventive. The following sugges-
tons are made for preparing bordeaux
mixture for this use Eight pounds cop
per sulphate, four pounds good quick
lime and 1850 gallons water are the
proportional materials. It is advised in
the preparation to have three wooden
vessels SO as to insure a complete me-
chanical admixture of the ingredients.
After putting i'll one of the vessels from
1925 gallons of water suspend in this
the eight pounds of copper sulphate. It
may be put in bag of loose texture.
This suspension is necessary in order to
have quick and complete solution. In
another vessel slack the lime with hot
water, using water enough to slack it to
a soft paste. Add to this 1925 gallons
water, mix we'll and strain to rid it of
any impurities that might clog the
spray nozzle We wish now to thor
oughly mix the limewater and copper
solution. This can be done by pouring the
contents Of the two vessels sinlultane-
ously in the third or by having two
parties with a bucket each. When a
combined spray is needed to protect the
plants from insects as well as fungous
troubles, add to the 1880 gallons bor-
deaux four ounces paris green. In ap-
plying the spray it is very important
that the admixture is kept complete by
agitation. Most spray pumps have de-
vices for this.