Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: June 14, 2024
Abstract
The
beet
armyworm,
Spodoptera
exigua
(Hubner)
(Lepidoptera:
Noctuidae),
has
become
a
significant
pest
of
chickpea
in
recent
years.
polyphagous
nature
allows
it
to
survive
on
various
hosts
during
the
off-season,
creating
great
menace
crop
following
season.
To
assess
incidence
and
document
alternate
S.
,
rapid
roving
survey
was
conducted
11
chickpea-growing
areas
Prakasam
district,
Andhra
Pradesh,
India.
Additionally,
life
history
traits
were
studied
major
host
plants
under
laboratory
conditions
(27
±
1
°C
70
2%
RH)
understand
survival,
expectancy
potential
contribution
future
populations.
results
show
that,
among
different
crops
surveyed,
maximum
larval
noticed
maize
(1.93
larvae/plant),
cowpea
(1.73
sunflower
(1.68
larvae/plant)
off-season.
Life
studies
showed
that
highest
survival
percentage
observed
(83.6%),
while
lowest
(44.5%).
mean
developmental
time
for
larvae
longest
(27.1
days)
shortest
(14.9
days).
Larvae
did
not
develop
beyond
third
instar
when
fed
with
chilli.
growth
index
statistics
(9.2)
most
suitable
plant,
whereas
(0.9)
least
host.
age-stage-specific
rate
(S
xj
)
varied
across
stages,
curves
overlapped,
indicating
rates
individuals.
(e
at
age
zero
groundnut
(37.06
intrinsic
increase
(r)
(0.10
0.0013)
(0.22
0.0010).
Similarly,
net
reproductive
(R
0
(846.39
18.22)
(59.50
2.06).
population
doubled
every
3.08
0.011
days
compared
7.22
0.80
maize.
study
conclusively
indicates
sunflower,
primarily
cultivated
rabi
season
India,
are
preferred
.
In
contrast,
cotton,
mainly
grown
kharif
season,
less
merely
support
pest's
survival.
Consequently,
switches
between
growing
seasons,
so
effective
management
can
help
prevent
outbreaks
Insects,
Journal Year:
2022,
Volume and Issue:
13(4), P. 365 - 365
Published: April 8, 2022
In
the
United
States,
beet
armyworm
resistance
to
both
chlorantraniliprole
and
bifenthrin
insecticides
was
first
reported
in
2020.
Here
we
examined
fitness
stability
of
pyrethroid
since
knowledge
is
a
crucial
aspect
when
recommending
rotation
with
different
mode
action.
Concentration-mortality
bioassays
were
performed
field
laboratory
susceptible
populations.
The
F2,
F13,
F27
generations
field-derived
population,
maintained
without
insecticide,
exposed
commercial
formulations
using
leaf-dip
bioassay
method
(IRAC
n.
007).
Insects
from
had
components
(survival,
body
weight,
development
time)
documented
compared
by
LSM
each
insecticide
concentration
tested.
ratio
reached
629,
80,
15-fold
at
F27,
respectively.
These
results
contrast
an
over
1000-fold
all
generations.
population
reduced
chlorantraniliprole,
but
not
bifenthrin.
summary,
stable
no
shift
fitness.
contrast,
through
kept
selection
pressure,
likely
due
cost.
Plants,
Journal Year:
2022,
Volume and Issue:
12(1), P. 3 - 3
Published: Dec. 20, 2022
Spodoptera
frugiperda
is
a
major
pest
of
maize
crops.
The
application
synthetic
insecticides
and
the
use
Bt
varieties
are
principal
strategies
used
for
its
control.
However,
due
to
development
pesticide
resistance
negative
impact
on
environment,
natural
alternatives
constantly
being
searched
for.
Accordingly,
objective
this
review
was
evaluate
essential
oils
(EOs)
as
controlling
S.
frugiperda.
This
article
covers
composition
EOs,
methods
evaluation
EO
toxicity,
effects,
their
mode
action.
Although
EOs
Ocimum
basilicum,
Piper
marginatum,
Lippia
alba
most
frequently
used,
Ageratum
conyzoides,
P.
septuplinervium.
O.
gratissimum
Siparuna
guianensis
were
shown
be
effective.
As
components
these
vary,
then
action
could
different.
results
our
analysis
allowed
us
compare
potential
certain
control
insect.
In
order
obtain
comparable
when
evaluating
toxicity
frugiperda,
it
important
that
methodological
issues
taken
into
account.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: June 14, 2024
Abstract
The
beet
armyworm,
Spodoptera
exigua
(Hubner)
(Lepidoptera:
Noctuidae),
has
become
a
significant
pest
of
chickpea
in
recent
years.
polyphagous
nature
allows
it
to
survive
on
various
hosts
during
the
off-season,
creating
great
menace
crop
following
season.
To
assess
incidence
and
document
alternate
S.
,
rapid
roving
survey
was
conducted
11
chickpea-growing
areas
Prakasam
district,
Andhra
Pradesh,
India.
Additionally,
life
history
traits
were
studied
major
host
plants
under
laboratory
conditions
(27
±
1
°C
70
2%
RH)
understand
survival,
expectancy
potential
contribution
future
populations.
results
show
that,
among
different
crops
surveyed,
maximum
larval
noticed
maize
(1.93
larvae/plant),
cowpea
(1.73
sunflower
(1.68
larvae/plant)
off-season.
Life
studies
showed
that
highest
survival
percentage
observed
(83.6%),
while
lowest
(44.5%).
mean
developmental
time
for
larvae
longest
(27.1
days)
shortest
(14.9
days).
Larvae
did
not
develop
beyond
third
instar
when
fed
with
chilli.
growth
index
statistics
(9.2)
most
suitable
plant,
whereas
(0.9)
least
host.
age-stage-specific
rate
(S
xj
)
varied
across
stages,
curves
overlapped,
indicating
rates
individuals.
(e
at
age
zero
groundnut
(37.06
intrinsic
increase
(r)
(0.10
0.0013)
(0.22
0.0010).
Similarly,
net
reproductive
(R
0
(846.39
18.22)
(59.50
2.06).
population
doubled
every
3.08
0.011
days
compared
7.22
0.80
maize.
study
conclusively
indicates
sunflower,
primarily
cultivated
rabi
season
India,
are
preferred
.
In
contrast,
cotton,
mainly
grown
kharif
season,
less
merely
support
pest's
survival.
Consequently,
switches
between
growing
seasons,
so
effective
management
can
help
prevent
outbreaks
