Metabolites,
Journal Year:
2021,
Volume and Issue:
11(9), P. 583 - 583
Published: Aug. 30, 2021
The
fall
armyworm
(FAW),
Spodoptera
frugiperda
(Smith),
is
a
polyphagous
pest
whose
larval
feeding
threatens
several
economically
important
crops
worldwide
with
especially
severe
damage
to
corn
(Zea
mays
L.).
Field-derived
resistance
conventional
pesticides
and
Bt
toxins
have
threatened
the
efficacy
of
current
management
strategies,
necessitating
development
alternative
methods
technologies.
One
possible
avenue
use
volatile
organic
compounds
(VOCs)
other
secondary
metabolites
that
are
produced
sequestered
by
plants
as
response
feeding.
effects
conspecific
on
oviposition
preferences
fitness
were
examined
using
two-choice
experiments,
trials,
targeted
metabolomics,
VOC
analyses.
There
was
significant
preference
for
lacked
damage,
larvae
fed
tissue
from
damaged
exhibited
reduced
weights
head
capsule
widths.
All
promoted
significantly
increased
metabolite
concentrations
compared
without
any
Metabolite
differences
driven
primarily
linoleic
acid
(which
directly
toxic
armyworm)
tricarboxylic
acids.
Several
VOCs
in
known
deterrents
warrant
further
investigation
an
integrated
context.
Biological Agriculture & Horticulture,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 22
Published: Oct. 13, 2024
The
objective
of
this
study
was
to
the
response
tomato
(Solanum
lycopersicum)
against
Rhizoctonia
solani
using
dynamised
high
dilutions
and
plant
extract
based
on
silicon.
treatments
were
Silicea
terra
(ST),
Thuya
occidentalis
(TO),
Equisetum
arvense
(EA)
at
30CH
(Centesimal
Hahnemannian
dilution
order),
leaf
(LE),
non-dynamised
water
as
control.
Seeds
cv
Marmande
treated
overnight.
in
vitro
bioassays
involved
assessment
R.
mycelial
growth,
seed
germination,
seedling
development.
In
greenhouse
experiment,
emergence,
root
aerial
part
development,
disease
development
evaluated.
Leaves
harvested
analyse
concentrations
flavonoids,
phenolic
compounds,
chlorophyll,
carotenoids,
chitinase
activity.
bioassay,
LE
reduced
growth
TO
increased
vigour
index,
dry
weight,
length
seedlings.
ST
emergence.
Tomato
plants
with
improved
fresh
weight
roots.
severity
decreased
by
ST,
LE,
TO.
flavonoid
concentration
higher
LE.
Overall,
TO,
EA,
content
compounds.
Moreover,
endochitinase
chitobiosidase
activated
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2022,
Volume and Issue:
unknown
Published: March 8, 2022
Over
two
decades
ago,
scientists
developed
a
push-pull
intercropping
strategy
that
received
critical
acclaim
for
synergizing
food
security
with
ecosystem
resilience
in
smallholder
farming.
The
suppresses
Lepidopteran
pests
maize
through
combination
of
repellent
intercrop
(push),
commonly
Desmodium
spp.,
and
an
attractive,
dead-end
border
crop
(pull).
Key
is
the
intercrop’s
constitutive
release
volatiles
repel
herbivores.
Surprisingly,
however,
we
found
does
not
constitutively
volatiles,
only
minimally
upon
herbivory.
Further,
oviposition
choice
settings,
Spodoptera
frugiperda
,
devastating
invasive
pest,
was
repelled
by
volatiles.
In
search
alternative
mechanism,
neonate
larvae
strongly
preferred
over
maize.
However,
their
development
stagnated
none
survived.
addition,
were
frequently
seen
impaled
immobilized
dense
network
silica-fortified,
non-glandular
trichomes.
Thus,
entirely
different
from
repelling
adult
moths,
intercepts
decimates
dispersing
offspring.
As
hallmark
sustainable
pest
control,
maize-
has
inspired
countless
efforts
trying
to
emulate
stimulo-deterrent
diversion
other
cropping
systems.
detailed
knowledge
actual
mechanisms
required
rationally
improve
strategy,
translate
concept
into
IOP Conference Series Earth and Environmental Science,
Journal Year:
2022,
Volume and Issue:
985(1), P. 012049 - 012049
Published: Feb. 1, 2022
Abstract
The
presence
of
fall
armyworm
(FAW),
Spodoptera
frugiperda
J.E.
Smith,
in
Indonesian
corn
plantations
caused
the
farmers'
dependence
on
chemical
insecticides
increased.
Since
pesticides
have
several
side
effects,
it
is
necessary
to
develop
another
alternative
FAW
management.
This
study
aimed
investigate
efficacy
biosilica
fertilizer
against
incidence
and
its
effect
maize
production.
A
factorial
experiment
was
arranged
two
factors,
first
factor
doses
with
varied
1,
2,
3
l/ha;
second
number
applications
at
times.
results
demonstrated
that
application
2
-
l/ha
as
foliar
spray
three
times
starting
from
10
days
after
growing
reduced
infestation
significantly
compared
control
treatment.
No
significant
differences
were
observed
vegetative
characteristics
plants,
i.e
height
leaves,
response
biosilica.
Application
improved
yield
attributing
characters
plant
increased
production
other
treatments
including
We
conclude
can
be
used
an
for
Metabolites,
Journal Year:
2021,
Volume and Issue:
11(9), P. 583 - 583
Published: Aug. 30, 2021
The
fall
armyworm
(FAW),
Spodoptera
frugiperda
(Smith),
is
a
polyphagous
pest
whose
larval
feeding
threatens
several
economically
important
crops
worldwide
with
especially
severe
damage
to
corn
(Zea
mays
L.).
Field-derived
resistance
conventional
pesticides
and
Bt
toxins
have
threatened
the
efficacy
of
current
management
strategies,
necessitating
development
alternative
methods
technologies.
One
possible
avenue
use
volatile
organic
compounds
(VOCs)
other
secondary
metabolites
that
are
produced
sequestered
by
plants
as
response
feeding.
effects
conspecific
on
oviposition
preferences
fitness
were
examined
using
two-choice
experiments,
trials,
targeted
metabolomics,
VOC
analyses.
There
was
significant
preference
for
lacked
damage,
larvae
fed
tissue
from
damaged
exhibited
reduced
weights
head
capsule
widths.
All
promoted
significantly
increased
metabolite
concentrations
compared
without
any
Metabolite
differences
driven
primarily
linoleic
acid
(which
directly
toxic
armyworm)
tricarboxylic
acids.
Several
VOCs
in
known
deterrents
warrant
further
investigation
an
integrated
context.
