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Transcript
Forest
tent
detected
in
1992.
caterpillar
our traps
at
and spring
the three
hemlock
loopers
were
elevations
monitored
not
in
Ozone
injury
was
detected
late
in
the
growing
season
(September)
on one of
the
three
species
monitored.
On
September
21,
27% of the milkweed
plants
monitored
showed
light
to moderate
ozone damage to leaves.
No symptoms
of
ozone
damage were observed
on black
cherry
or blackberry
plants
monitored.
Table
1.
Mansfield
Survey
results
in 1992.
TARGET PEST
SURVEY
on six
forest
pests
monitored
TOTAL NO.
COLLECTED
LOCATION
TYPE
on Mount
Forest
Tent
Caterpillar
Pheromone
traps
BR 1400'
BR 2200'
BR 3800'
o
o
o
Spring
Hemlock
Looper
Pheromone
traps
BR 1400'
BR 2200'
BR 3800'
o
o
Pheromone
traps
BR 1400'
BR 2200'
BR 3800'
325 total
521 total
Pheromone
traps
BR 1400'
BR 2200'
BR 3800'
87 total
10 total
7 total
Burlap
banded
trees
BR 1400'
~ticky-~ps
Soil
samples
(1991)
BR 1400'
Soil
BR 1400'
Fall
Hemlock
Looper
Spruce
Gypsy
Budworm
Moth
Pear
Thrips
Pear
Thrips
Pear
Thrips
BR 1400'
4
egg
313 total
0.8
yer
samples
( 199~
42
masses
8.1
~
average
sampleaverage
sample