NASA satellite to map gypsy moth
UNIVERSITY PARK - NASA’s
earth-scanning satellite, passing
over Pennsylvania this summer,
will chart the defoliation of forests
by gypsy moths. The new space
age technique will combine
computer analysis with in-
V'-*
Computer-printed map of Perry County, from 1981 Landsat data shows forests
defoliated by gypsy moths in black areas with undefoliated forests in white. Gray areas
are lands not covered by forests.
ALKA-CULTURE™ or ALKA II
Dairymen are challenged to
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on the high genetic ability of today's
dairy cows. These systems include
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These types of rations will pro
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of rumen pH -- acidosis.
Without adequate buffering,
cows may eat less and use feed less
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Over 80 years of service to the dairy and livestock producer.
i youngfc
©1983 young's
formation
satellite.
“Such scanning will gradually
replace the present aerial sketch
mapping of damage by gypsy moth
caterpillars,” declared Brian J.
Turner, co-director of the Office
Livestock Nutritional Services
from
Landsat
the
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’-'i? : '4Puf&3Bf4f
a "
ALKACULTURE and ALKA II are
special combinations of buffering
ingredients plus methionine and
yeast culture. They buffer the rumen
and other parts of the digestive tract
to help maintain a strong appetite
and increase fiber digestion to im
prove fat test.
Regular use of ALKA-CULTURE
or ALKA II helps cows reach peak
production sooner and helps keep pro
duction higher throughout lactation.
Your young's representative has
all of the details on ALKA-CULTURE
and ALKA 11. If you don't know the
name of the representative nearest
you, write or call young's, inc., P.O.
Box 71, Roaring Spring, PA 16673
Phone; (814) 793-3701.
for Remote Sensing of Earth
Resources,'at Penn State.
"Computer-generated maps can
show two or three levels of
defoliation in more detail, with
greater consistency, and at least
as accurately as those produced
I » | t * Goddard Space Flight Center in
nPTnlls)flAll Maryland and their Jet Propulsion
UL/lUliailim Laboratory in California.
"SE^tSJtnllea
sylvania Department of En
souare miles in a sinele imaee vironmental Resources.
Sis advantage is enSed by die **. «** **». “ developing a
computer’s ability to make un- f^ e “ 1 <! te ' ori t ente i “ appln B
biased decisions, thus decreasing system f to e° ns f ruc ta forest
human variations. The satellite ° f Was
will pass over central Penn- with Landsat data showing
sylvania on June 21. Overpasses a ® ac^mre d f rom 1 976
occur every 16 days. through 1979.
Turner and associates developed Ten landsat scenes or sequences
rules for a computer to followin to B et fuß coverage of
determining whether an area had Pennsylvania. Accordingly,
been defoliated or not. Information t * c i m fQ ues developed m lunar and
from previous Landsat overpasses P* anetar y missions were used to
showing no defoliation iriUbe fo ™ a compositemap of digital
matchwi aeainst this summer’s computer data for the state,
mateneo against mis summers Geographic distortions were
. . , , . corrected so that the resultant set
“Our first need was to develop a , , ( _TT
e . - - r of data conformed to a
whether f an area was tores Tor geographical grid known as
sssz
mid-summer looks remarkably
like any other bare ground when pr^ ced a f or ei-nonforest of
Ta?wS!2s-"SSSi Se^oSt!
New information on magnetic itfr . ... . .
tape wiU be acquired from Landsat The collection system is
passes occurring at the peak of n ° “ n ? P L etely fo ? lpro TJ*™*
defoliation. This information will noted ‘‘There is always the chance
be registered by a computer onto a clouds will obscure some part
forest map. Forested areas will of the state for all peak-defoliation
then be analyzed by a computer to SfaSS
determine the extent of defoliation. „ eeKS " “ ® uctl cases, me state
The process will use rules set up by Bu ? au ,® f
comparing ground observation on the old method of aenal sketch
with data from satellites. mappmg,’’ he added
Using green and red bands of the Tins year the Pennsylvania
visible soectrum and two in the Bureau of Forestry is spraying a
infrared the Penn Staters new tacterial insecticide know as
overlay the images to create color- T * ac ‘SJ^s'ateliite’s
enhanced pictures of the state. i
Heavily defoliated areas show up
m one color and health, forests In hSSnte
"mSs can then be produced MtiaUy ’ Landsat
JS~JSI St dSS m^ e
and corresponding acreages. Such JSLtSTCSL. TO
The new remote sensing university’s computer and image
orocedure erew out of a three-vear analysis facihties will be used. In
State Office forßemote Sensing of wlU . be able t ° condu< *
Earth Resources. Cooperating and r ° ut . lne . d ‘i V 1 ° °
were scientists from NASA’s assessments from satellite data.
Ip
Lancaster Fanning, Saturday, June 18,1983-A3l