Evening star., 1935-06-22

"OUR or five years ago the bean
- beetle swept through this area
with great destructiveness. Now
"A and again there are sporadic
outbreaks but no such epidemic as
the original infestation. In mimeo-
graph circular, E 343, issued April,
1885, by the Bureau of Entomology
and Quarantine, it is asserted that
derris powder sprays and cryolite
sprays have given equal If not better
control of the Mexican bean beetle
than has magnesium arsenate. Derris
powders with a rotenone content of
per cent should be used at the rate
of 2 or 21a ounces in gallons Of
water. No value was found in adding
any sticker or spreader to this spray.
Cryolite, either natural or synthetic,
is recommended at the rate Of 8
ounces in 3 gallons Of water. Mag
neSium arsenate is said to be the
most economical of the three but to
occasionally cause foliage injury. Lead
arSenate should never be used on
beans, because of serious burning. Snap
beans, that is, beans in which the
pods are eaten, should not be sprayed
with cryolite or, with magnesium
arsenate after the pods start to form.
Destruction of crop remnants after
harvest is urged as highly important.
This may be accomplished by burying
the plant refuses at least six inches
under the soil.
Stalking Plants.
PARTICULARLY in the partially
shaded garden, the stalking of tall
growing plants, such as lilies, lark
spurs, dahlias and even marigolds and
zinnias, becomes almost a necessity
unless one wants to wake up some
morning after a storm and discover
everything in a fallen position. Often
times only very light stakes are
needed and most Of the garden supply
houses carry a stock of different sized
stakes for garden use. some very rea-
sonably priced. Frequently one may
secure green stained stakes and If
green tape or string is employed in
the tying operations, the stakes are
not at all conspicuous. If the stakes
are collected in the late Autumn and
stored in a dry location, they may be
used for several seasons. Stalking
facilitates cultural operations because
OF the greater ease in moving through
upright plants. Often, as is the case
of dahlias, the name of the variety
may be written on a label attached to
the stake.
Rose Insects.
THERE are a rather large number
Of species of insects that occa-
sionally feed on the rose but in gen.
eral only the aphids, thrips and leaf
| hoppers present a serious problem
All of these succumb to spraying with
pyrethrum or with nicotine prepara-
tions. In both instances the insecti-
cidal properties are so concentrated
that only one to two teaspoonfuls OF
the liquids are required to a gallon
of water. In the case of the nicotine
preparation the addition of a little
soap facilitates spreading and pos
sibly aids in releasing the volatile
| nicotine. Most of these insects pre-
fer the young tender flower buds and
shoots, whereas the destructive black
spot disease appears first on the ole
lower leaves near the base of the
plant. Bordeaux mixture and colloidal
sulphur solution are both effective
deterrents for this disease which Is
now putting in its appearance.
Strawberry Culture.
TOR the most part, strawberry beds
are maintained through only one
fruiting season, chiefly because weeds
become so abundant during the Sec
ond Summer. With some care, 1t /.
possible to keep bed through two
fruiting seasons and even more. Al
the close Of the fruiting period, the