Brownsville herald. [volume] (Brownsville, Tex.) 1910-current, 1917-10-29
ARESEATE OF LEAD As A SPRAY FOR
INSECTS IN THE VEGETABLE GARDENS


Among internal poi>ons for use against
insect, injurious Ia vegetable, and truck
+, crops, none has been Of greater value nor 20
much used for mandibulatc tbitin. and
chcwing) forms such IL the Colorado po-
tato beetle, leaf beetle, cabbage worms, to-
uIato worms, and others, az Paris green.
| This ar,cnical was recommended IN past
wears, because IL was known 10 most farm
err and for sale IL drug stores. Its use,
however, i, being superseded To a eonsid-
cradle degree by other ar>ciricals of which
the most important mt present - arscnatc
OF lead or lead arsenate, which II now han
died largely at seed stores.
/, REASONS FOR USING.
The high price of all copper compounds
incident To war conditions has resulted in
an increase in price for Paris Green while
ltad arscnate j. less costly and preferable
for the following reasons: Y
CD II serves the same purpose n PARIS
green against nearly all the biting and
| chewing insects. t2) II is applied in the
same manner (3) Ii contains less OF the
soluble arsenic. (I) II i less harmful to
growing plants, being less likely TO burn
the leave, of delicate foliage. 90 IL i less
troublesome to prepare, and ca II j. of
i~ereatcr value than other a~rscnicals in that
il leaves n white coating on the plants 80
that it can be readily determined after
spraying which plants have been treated
and which have not bccn reached.
Ii should he understood that lead arse
rn.. I...- v.t LttI tp-art- a. YpigEly "A - sIng-
Paris greed, but the pests cease feeding n
, q a. they have rcceivd a poisonous
dose.
PROPORTIONS FOR DIFFERENT PUR-
POSES.
Lead arscnatc l. SOLD in dry, powder,
and in paste forms. Used at the rate Of
two pounds in powder form To 80 gallons
of water or Bordeaux mixture TN fluid
form) ii will destroy insects of the class
under consideration, such n -lucS and bee
ties of the potato beetle, cucumber beetles,
and the like.
In small gardens two-thirds ounce or III
level t~easpoonfuls 10 a gallon of water i
m about The same proportion.
The paste form must be used double
~tItHSin vi ltuI ipttit~ W NV Sdih'hN VI
water to secure the same results. For
small quantities this proportion i most
nearly approached by the use of ia
ounce or three level tea>poonfuls 10 4
: gallon of water.
METHOD OF SPRAYING.
The number of sprayings 10 he applied
depends on the insect involved In the INJURY
and on local and seasonal conditions,
Sometimes a single application made ~ the
proper time will suffice, but usually two
or three are necessary for cabbage worms,
the potato beetle and other insects which
produce more than one generation or
brood annually. Generally it, adhesive
ness j. increased nv the addition ot about
the same amount by weight of resin -tlshoil
soap or other soft soap a. Of the arscnicaI
used.
In the ease III some insects which affect
the lower icavc7 understanding or side
spraying j. desirable. and il j. sometimes
necessary, a IN the ease of the aspara-
gus beetles, 10 spray IN two directions, GO
ing over the plants "A second time.
DANGER IN APPLYING TO BEANS.
Lead ar~cnatc y practically the only ar
~senical which may be sprayed on beans,
and there j. extreme likelihood Of it, burn