NEWARK, DE Now that the
emergency exemption for the use
of Larvadex has been withdrawn
for a second time, poultry growers
are faced with the problem of
maintaining fly populations at
very low levels in order to prevent
the spread of avian influenza and
other diseases.
“It seems more doubtful than
ever that Larvadex will eventually
be available for commercial use,”
says University of Delaware ex
tension entomologist Mark
Graustein. “The EPA won’t ap
prove any state labels for its use so
we’ll have to wait for full federal
registration, which could be one to
two years away-if ever. In the
meantime, its going to take work,
but producers can achieve
adequate fly control with proper
management and the insecticides
that are available.”
The specialist says an integrated
pest management approach will be
needed to maintain fly populations
at low levels. Growers have
several options, depending on their
circumstances.
Proper manure management is
essential, first of all. Frequent
' V
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Have Interest Free Waiver Until December 1, 1984.
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Until October 1, 1984
PEOPLE’S
SALES & SERVICE
Oakland Mills, PA
717-463-2735
A. L. HERR & MO.
Quarryville, PA
717-786-3521
CLAIR J. MYERS
Lake Roadßl
Thomasville, PA
717-259-0453
ARRETT’S OARAGE
Rt 9 Box 125
Hagerstown, MD
301-733-0515
R.E. SMELTZER
EQUIPMENT CO.
RD 2, Box 2
Centre Hall, PA
814-364-1419
Del. extension offers fly control t
removal of manure is one alter
native-this will deprive flies of a
place to breed.
“Unfortunately, most growers
can’t clean out manure often
enough during hot summer
weather to make this procedure
effective,” Graustein says.
Another alternative is the use of
a liquid manure system. However,
few farmers have a lagoon or the
equipment necessary to manage a
liquid system.
By far the most practical ap
proach to manure management is
to reduce as much as possible the
moisture from accumulating
manure. House flies develop
poorly in manure with moisture
below 25 percent.
“Normally,” says Graustein,
“we recommend maintaining
moisture between 25 and 80 per
cent. This allows some flies to
breed and develop but also en
courages the buildup of parasites
and predators which can help
control them.” However, because
of the threat of avian influenza,
tolerating even a moderate fly
population to encourage biological
control is not advisable. Graustein
J t M MACHINERY
Greensburg, PA
412-668-2276
BENNETT
MACHINE CO.
1601 S. Dupont Blvd
Milford, DE
302-422-4837
NICHOLS FARM
EQUIPMENT
Bloomsburg, PA
717-784-7731
STOUFFER BROS. INC.
Chambersburg, PA
717-263-8424
GEO. W. KINSMAN,
INC.
516 Main Street
Honesdale, PA
717-253-3440
Living without Larvadex
suggests that growers use active
ventilation, absorbant materials,
and keep water systems, roofs and
drainage in good repair in order to
reduce manure moisture. If fly
populations get out of hand, he
recommends manure be removed
from poultry housing.
He also recommends making
routine applications of residual
insecticides to walls, ceilings, and
posts. Be sure to alternate the
compounds used in order to slow
the development of fly resistance.
Ectiban, Hard Hitter, Insectrin,
Overtime or Permectrin alter
nated with Eavap, Cygon or
Baytex should give good control,
Graustein says.
At the same time use premixed
dry baits-Goldin Malrin and True
Blue Fly Grits placed at a rate of 4
tablespoons in an empty plastic
milk jug with four 2-inch diameter
holes in them. Hang the jugs from
roof supports or place them on
walkways at a rate of one per 1,000
square feet. Place extra bait at the
front and back of the poultry
house.
Graustein says growers should
be equipped to apply a space spray
LEBANON VALLEY
IMPLEMENT CO., INC.
Richland, PA
717-866-7518
ELDER
SALES & SERVICE,
INC.
RT 1 Box 619
Stoneboro. PA
412-376-3390
412-376-3740
UMBERGER’S OF FONTANA
Rt. 4 Lebanon, PA
(Fontana)
717-867-5161
ECKROTH BROS.
FARM EQUIPMENT
RT 2 Box 24A
New Ringgold, PA
717-943-2131
MILLER EQUIPMENT
CO.
RD 1
Bechtelsville, PA
215-845-2911
DAYTON EQUIPMENT
COMPANY
Dayton, PA
412-783-6990
BINKLEY & HURST
BROS.
133 Rothsville
Station Road
Lititz, PA
717-626-4705
PETERMAN FARM
EQUIPMENT, INC.
225 York Rd
Carlisle. PA
717-249-5338
HINES EQUIPMENT
Cresson, PA
814-886-4183
Bellwood
814-742-8171
Lancaster Fanning, Saturday, August 4,1984-D5
for adult fly control, in case
populations get out of hand.
Fly populations can be
monitored using speck cards to
determine if a spray is needed.
Simply attach plain white 3x5
index cards to rafters with tape or
tacks. When the adult flies rest on
the cards, they leave specks of
excrement. Place a single card at
the front of each house and check it
daily.
Graustein says it’s important to '
keep records on the fly population
for each house, as tolerable fly
populations will probably vary.
The threshold for applying a space
spray may be as low as three to
four specks per day or as high as 16
to 20. Because of the threat of
avian influenza he recommends
growers use the lowpr threshold.
4-H swine show slated
PARADISE Chester and
Delaware County 4-H’ers are
busily perparing for the 1984
Chester-Delaware 4-H Swine Show
and Sale. Held at the Vintage Sales
Stable in Paradise, the two-day
event will feature 120 well-fed
market hogs.
The show will begin at 5:30 p.m.
on Friday, August 10, and the sale
will begin at 9 a.m. on Saturday,
August 11. Judging the show will be
USDA announces wool support prices
WASHINGTON - Support
prices for wool and mohair for 1984
marketings are 1.65 per pound for
shorn wool and $5,169 per pound for
mohair, according to Secretary of
Agriculture John R. Block. Mohair
is being supported at the same
percent of parity as wool.
Block said pulled wool will
continue to be supported at a level
comparable to die support price
for shorn wool through payments
on unshorn lambs.
As in past years, he said, shorn
wool payments will be based on a
percentage of each producer’s
returns from sales. The per-
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TWO CONVENIENT LOCATIONS:
1755 W Mam St 1515 East Chocolate Ave.
Ephrata, PA 17522 Hershey, PA 17033
Located on Route 322 Phone (717) 533-4060
Phone (717) 738-1131
ps
Vapona (DDVP) is the primary
insecticide to use, although
Dibrom or pyrethrins can be used
if flies are resistant. Use a .5
percent Vapona mist or fog.
Even with the best manure
management, the entomologist
says there are always spots of wet
manure where fly larvae thrive.
Use insecticides only where
maggots are numerous. For their
control he recommends applying
Intercept at a rate of one 3.67-
ounce packet with 5 to 10 gallons of
water. This should be enough to
treat 2,000 square feet of manure.
Cygon (or Defend), malathion or
Ravap can also be used but he
Intercept is preferred in order to
reduce the development of
resistance to the adulticides.
Chet Hughes, Lancaster County
extension livestock specialist. The
4-H members would like to en
courage businesses and in
dividuals interested in purchasing
a hog to attend the sale.
Vintage Sales Stable is located
on Route 30 about four miles west
of Route 41. Further information
can be obtained by calling the
Chester County extension office at
215-696-3500.
centage will be that required to raise
the national average price
received by all producers for shorn
wool in 1984 up to the support price
of $1.65 a pound, he said. In 1984
shorn wool prices are expected to
average around 75 cents per pound
compared to 61.3 cents in 1983.
Mohair payments will be
calculated in a manner similar to
wool. Block said projected prices
indicate payments will be
necessary for 1984 marketings.
Mohair prices during 1984 are
expected to average around $4.75
per pound compared to $4.05 in
1983.
Ft*