Test Results Reveal *
USDA Loses the Thing' on Grubs
A new systemic insecticide
for control of cattle grubs,
cause of heavy annual losses
to livestock producers, has
shown promise and versati
lity in experimental use by
entomologists.
The new chemical is an
organophosphorus compound
known chemically* as (0-(4-
tert-butyl- 2 -chlorophenyl)
O-methyl methyiphoramidot
hioate) It can be adminis
tered either orally or as a
spray.
Used orally, the chemical
at the highest test dosages
used provided .control am
ounting to 94 to 100 per cent.
Used as a spray, it provided
99 to 100 per cent control.
The chenvcal is not yet avai
lable to cattlemen
Test results were reported
Nov 26, to members of the
Entomological Society of Am
enca holding their sixth an
nual meeting at Salt Lake
City, Utah
Adolph R Roth and James
W. Eddy, entomologists of
USDA’S Agricultural Resea
rch Service, conducted the
EiisFsl
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1 WIM THE HEART OF AMT
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FARMALL A
WITH
CULTIVATOR
Cope & Weaver
WILLOW Sf.
Ph. Lanr. L* 3-2821
tests at Corvallis, Ore, during 400 to 500 pounds were
ing the 1957-58 grub season used in the experiments
Discussing findings of the were treated in the fall
test, Mr. Both said that one 0 f 1957 anc[ examined for
previously tested chemical grubs last February, March,
had only proved effective as Apn i and May. The grubs,
an oral treatment while an Hyponderma lineatum, no”m
other was effective only as a a u y appear largely in March,
spray The new chemical, he Those appearing in April
sa’d gave excellent results, W ere mainly of the H boris
used in either manner. species
Experimental treatments,
Mr. Roth explained, were
most effective when the dos
age administered in bolus or
capsule forms amounted to 20
or 25 milligrams of the new
chemical to each kilogram,
(about 2 2 pounds) of body
we’ght of the test animals
Results were fair, however,
when oral dosages of only 4
to 15 milligrams per kilogram
of body weight were given.
The reasearchers obtained
nearly perfect control results
when 4 quarts of spray were
used per animal, but a 2-qu
art application provided ab
out 70 to 80 percent control
The spray formulation in-
eluded a wettable powder Philosophy triumphs easily
containing 075 percent act- over past a nd over future,
ive material Sprays were ap- , , , . , . .
plied under an operating pres evi s Ul presen
sure of 250 to 300 pounds umph over philosophy —La
Hereford yearlings weigh- Rochefoucauld
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The test animats were sele
cted at landom and ear-tag
ged. They were riot separated
from the animals used as con
trots.
In addition to the Here
ford yearlings used m the last
test, all of which were trea
ted before the grubs appear
ed, a' single grub-infested
yearling Guernsey steer was
treated orally with the 25-
milligram dosage after grubs
were visible on the animal’s
back The aihmal was infested
with' 22 encysted second and
third-mstar larvae, all of
which were dead 14 days af
ter treatment
ON GUARANTEED
12—Lancaster Fanning, Satan
Records show more than 1,100 fatilities in the n
States each year are caused by tractor accidents Assu
Chester County Agent Frank E. Bortz says many of (
can be avoided by just being careful and taking youi i
Ho suggests these points to remember ,when operating
tors and other farm machinery.
A child’s safety is a par- keep them evenly adju
ent’s responsibility.. Teach Throttle down before
children the importance of turns.'
safety and point out dangers -A- tractor has only se;
involved in the use of mach- do not carry extra ndoi
inery. Emphasize that opera- either the tractor or h
ting a tractor is a job for a implements,
mature person. Avoid climbing
The tractor is the Number banks with the traclot
One farm killer. Tractors are overturns are one of
involved m 35 per cent of all chief causes of tractor
accidents. Forty per cent of dents Be careful whoie
all tractor accidents are fatal woik Often ditches,
to the operator an d stumps are hidd
Chances of an upset in- Srass or brush and
crease four times when speed tor m ? y overturn
is doubted ' If possible lock llttle warning
brake pedals together when
driving on the open highway Patronize Lancastei r
Use brakes cautiously 'and ing Advertisers
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Ph. EL 4-2214
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New Holland
Phone EL 4-8721
Conestoga
Farm Service Haverstick Bros.
Park Ave., Quarryville Columbia Pik©/ Lancctf
Phone ST 6-2597 Phono EX 2-5722
For Your
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Quarryville. Pa.
' Don’t wait til!
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You'll be busy later on, and so will we
That's why we offer special off season
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Allen H. Matz
Denver
Phone AN 7-6502
Elizabethtown
Farmers Supply Im
Elizabethtown
Phone EM 7-1341
31, 1959