26
—Lancaatar Farming, Saturday. Oct 19, 1974
Life Cycle Determined For Oak Insect
Entomologist at The
Pennsylvania State
University have determined
the life cycle of the oak leaf
roller, an Insect killing 43 per
cent of the oaks in nearly
900,000 acres surveyed in
Pennsylvania. The biology of
the oak leaf roller was
described September 27 by
Dr. Ralph O. Mumma of
Penn Stade at an eastern
brandi meeting of the En
tomological Society of
America held in Hersbey.
Dr. Mumma indicated that
biological information must
be available before effective
programs to control the oak
leaf roller can begin. He said
HAY &
STRAW SALE
EVERY
WEDNESDAY
AT 12 NOON
PAUL Z. MARTIN
SALESSTABLES
2 miles East of
Intercourse
Sale managed by
Harvey Z. Martin
the eggs start batching in
late April and have com
pleted hatching by May 10.
The larvae then go through
five stages, reaching the
final larval stage by about
June 15. Then they pass
through the pupal stage with
adults emerging around July
3.
If spraying with pestiddes
is to be done to control the
oak leaf roller, then the
middle of May is the best
time to do it, Dr. Mumma
pointed out. On the other
hand, natural parasites such
as flies take a heavy toll of
larvae, especially in the
latter larval stages during
early June.
In the pupal stage, a
certain parasitic wasp
emerged from 32 per cent of
the pupae examined in 1974
field studies. However, the
number of parasites can
vary year by year. In 1973,
the wasps emerged from
only 3.4 per cent of the pupae
studied.
Dr. Mumma quoted
Pennsylvania Department of
Environmental Resources
information describing the
oak leaf roller as “the worst
forest Insect disaster in
Pennsylvania during this
century." From 1970 to 1972,
of nearly 900,000 acres
sampled, 43 per cent of the
oaks were killed with a
lumber stumpage value of 57
million dollars.
Working with Dr. Mumma
and associates on Penn
Horse Disease
Meeting Scheduled
Equine Infectious Anemia
(EIA) the incurable horse
disease that is being found in
1-2 percent of the horses in
Pa. will be discussed on
Thursday, October 31, 1974,
7:30 p.m. at the Hum
melstown High School
Auditorium according to
John P. Harris, Associate
County Agent, Dauphin
County.
Dr. H. S. Forney, VMD,
chief of Miscellaneous
Diseases, Bureau of Animal
Industry, Pa. Dept, of
Agriculture will discuss the
History and Present Status
of EIA in Pa. The rules and
regulations concerning this
disease will be discussed in
detail.
Dr. John Ersoz, VMD,
Chief Pathologist in charge
of Equine Diseases, Sum
merdale Laboratories, BAI,
Pa. Dept, of Agriculture, will
discuss how the disease
affects the horse, the
pathology & diagnostic
methods to determine
whether a horse is positive or
negative.
- 'Die test is known as the
Coggins Test. This method is
approved by the.USDA and
has enabled New York State
to nearly eradicate the EIA
disease. The disease causes
anemia, weakness and
debility in horses rendering
some of them virtually
useless and even killing a
small number each year.
The disease is spread
principally in the pasture
months by blood sucking
insects which transfer the
virus from carrier horses to
State's oak lea! roller project
is Dr. Lawrence B. Hendry
In chemistry. The two
scientists are investigating
the use of the female sex
attractant pheromone. With
this product they hope to
confuse the males so they
can not find the females and
thus will not mate.
susceptible horses. Every
horse owner should un
derstand the disease and
have knowledge of the rules
and regulations. Anyone
planning to purchase a horse
should insist that a negative
Coggins Test report be
provided prior to purchase.
This disease is being found
throughout Central Penn
sylvania.
This Educational-
Informative Meeting is open
to the public - free of charge.
XXX
Liquid Deterged! Has
Many Uses
Liquid detergent can
safely and economically
clean sinks, bathtubs, tiles,
formica-topped kitchen
tables and counters and
many other washable sur
faces. But, Extension con
sumer specialists at The
Pennsylvania State
University, caution you to
start with a small amount.
Many liquid detergents
produce piles of suds. If you
need- more, you can always
add detergent.
BUTLER
ALL STEEL BUILDINGS
All buildings with color sides, hi-ten aluminum roof
w/2 10' x 10' O.H. Door Openings
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In the Wintar't Tata Shakaepeare refer* to
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Dairymen, check
this new wav
to use urea
New, patented Nutrena Controlled Release CLS
controls the release rate of protein-building nitrogen
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also means an extra margin of safety from urea
toxicity-important in free-choice feeding
Patented Nutrena Controlled Release CLS mix,
top dress, or feed free choice m lick feeders.
SWATARA ELMER
CREEK MILLS SHREINER
RDI, MYERSTOWN, PA. T-A GOOD’S FEED MILL
PHONE 17171933-4111 R.D.I, New Providence. Pa
CALL COLLECT Phone7l7-786-2500
30' x 25' Garage
30' x 40' Bldg.
w/ 16* x 10* Double Slide Door
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it aeacoi