The Jasper weekly courier. [volume] (Jasper, Ind.) 1858-1922, 1886-01-08
INSECTICIDES.


hE4uIIH OF experiments NJ tut WV OIE
Experiment station
In the third annual report Of the
New York Agricultural Experiment
Station il to be found statement o.
results gained on the station grounds
with various insecticides. The expert
ence there led to the opinion that
special mode Of treatment must be
adopted for almost every destructive
insect.
The turnip fiea-bcetlc was expert
mentcd upon with several insecti-
cides. A strong decoction Of tobacco
co proved very efficient when frequent
IL applied, but its efficacy appeared to
be lost after about ten DAYS. Kerosene
emulsion. diluted with eight parts o.
soft water, was also efficient. but the
effects were little il any more lasting
than those Of the tobacco water and
when frequently applied retarded the
growth Of the plants Tobacco leaves,
cut fine. when placed about the plants
Of the radish. had marked effect in
Keeping OF the beetle. This appli.
cation as well as that Of de-
cocii0n Of tobacco seemed to
stimulate the growth Of the plants.
Air-slacked lime, busted over the plants
when wet. proved unquestionably benefi-
cial and in dry weather it, effects were
quite lasting.
II was noted that the plants Of cab
bage. radishes. etc. grown in the cold
frame are scarcely injured by the flea-
beetle None Of the applications used
for the hea-beetlc had any perccptible
effect in preventing injuries from the
radish-hy. but satisfactory results were
gained by the use Of coal ashes.
The only application that appeared
10 prevent the injuries Of the striped
cucumber beetle was Paris green mixed
with water. NJ the rate Of half a tea
spoonful TO two gallons. and the mkt
urc applied to both sides of the leaves
Psrcthrum or Buhach powder. diluted
with an equal bulk Of air-slaked lime
and applied with a bellows. proved the
instant death Of caterpillars.
Experiments with Little's soluble
| phcnyle did not prove il desirable on
the station grounds Hammond's slug
shot upon trial was proved To BE- de-
siroyer Of insects. but the indications
! don purple mixed with a very large
proportion Of gas or unslackcd lime. II
this j. 30, the claim that il j. not in
furious to the human family nor to
stock j. false. and the price at which II
I sold. is IN excess Of the value Il the in
gradients.
II has been claimed that the Buhach
powder will kill the potato beetle when
applied 20 il in the open air. With q
view to verifying this statement. we
thoroughly busted several beetles while
on the plants with the pure powder on
/ July -. and after they had fallen 70
the ground placed them in bottle,
over the top of which we tied bit Of
mosquito netting The beetles soon re-
covered their activity aud exhibited no
Inconvenience as the result Of the ap-
plication. a bit II potato foliage was
placed in the bottle in order that the
(. starvation Of the beetles might not con-
vey wrong impression a. to the effects
! Of the poison. Later observations,
! however. showed that this prccaution
l was entirely unnecessary. for on August
| ~. thirty-tive days aftcrwari. some 81
| the beetles were still alive. These APP
! piled themselves with their accustomed
| vigor 10 potato leaves inserted into the
bottle, though they had tasted during
| full month.
| II wa proven that the Paris
green and water. cobs dipped in coal
| tar. and the kerosene emulsion were all
beneficial in rctariing. II not wholly
| preventing. the work Of the borer. The
| coal tar application. II i thought, Is
probably more permanent in is action
| than either Paris green or the cmnl-
| sion. II Il assured that II does not de-
stroy the insects. bat only repcls them,
while the other two appear 70 poison
the young maggct A. Il sats ~ way v
the stem.