Agronomy,
Journal Year:
2024,
Volume and Issue:
14(12), P. 2816 - 2816
Published: Nov. 27, 2024
Enhancing
photosynthesis
is
considered
one
of
the
most
rational
strategies
to
increase
crop
yield.
However,
dominant
physiological
driving
processes
at
different
maize
growth
stages
under
long-term
fertilization
remain
unclear.
Based
on
a
45-years
field
experiment,
four
treatments
were
selected—namely,
CK
(no
fertilizers),
N
(276
kg
ha−1),
M
(60,000
manure
and
MN
+
276
ha−1)—to
study
response
characteristics
fertilization.
The
results
showed
that
significantly
changed
photosynthetic
endogenous
hormones
content.
Among
them,
increased
rate
(Pn)
by
41.9–152.3%
compared
CK.
Organic
fertilizer
addition
(M
MN)
superoxide
dismutase
(SOD),
peroxidase
(POD),
soluble
sugar
(SS)
26.7–64.3%,
42.5–155.4%,
16.4–89.5%,
respectively.
proline
(Pro)
malondialdehyde
(MDA)
content
decreased
19.1–44.3%
0.6-21.3%,
Under
these
treatments,
indole-3-acetic
acid
(IAA),
gibberellins
(GA),
salicylic
(SA),
zeatin
riboside
(ZR),
abscisic
(ABA),
SS,
SOD,
POD
main
indicators
photosynthesis.
result
PLS-SEM
indicated
pathways
“IAA
or
ZR
SA-SOD-POD-Pn”
“GA
ABA-SOD
POD-SS-Pn”.
Additionally,
grain
yield
N,
M,
111.2%,
218.1%,
297.2%
CK,
Overall,
organic
combined
with
nitrogen
could
maintain
higher
level
capacity
balancing
enhancing
activity
antioxidant
enzymes
support
production.
Frontiers in Forests and Global Change,
Journal Year:
2023,
Volume and Issue:
6
Published: May 12, 2023
Nitrogen
(N)
is
an
important
component
of
the
forest
soils
and
plays
a
pivotal
role
in
ecosystem’s
health,
also
broadleaf
Moso
bamboo
(
Phyllostachys
edulis
)
forests.
numerous
functions
production
transformation
soil
organic
matter
(SOM)
alterations
soil’s
physicochemical
biological
properties.
Despite
extensive
research
on
properties
microorganism
diversity
forests,
we
still
know
very
little
about
N
dynamics
its
significance
or
how
various
physical
environmental
variables
influence
physicochemical,
dynamics,
attributes.
This
article
provides
thorough
overview
forests
changes
processes
by
summarizing
recent
advances
our
knowledge
microbial
diversity,
carbon
(C)
sink
As
are
sensitive
to
change,
even
small
change
these
ecosystems
can
alter
overall
dynamics.
Here,
dissect
ecology
provide
insights
into
possibilities
consequences
future
studies
ecosystems.
Plants,
Journal Year:
2022,
Volume and Issue:
11(8), P. 1038 - 1038
Published: April 11, 2022
Crops
around
the
world
are
facing
a
diversity
of
environmental
problems,
which
high
temperatures
proving
to
be
most
serious
threat
crops.
Polyamine
putrescine
(Put)
acts
as
master
growth
regulator
that
contributes
optimal
plant
and
development
increased
stress
tolerance.
Here,
current
study
aimed
elucidate
how
Put
functions
in
regulating
chlorophyll
(Chl)
metabolism,
oxidative
stress,
antioxidant
defense,
well
characterize
expression
genes
related
heat
tomato
seedlings
under
such
stress.
The
results
revealed
treatment
significantly
attenuates
heat-induced
damage
by
promoting
biomass
production,
increasing
photosynthetic
efficiency,
inhibiting
excessive
production
markers.
Heat
markedly
decreased
Chl
content
leaf
accelerated
yellowing
process.
However,
Put-treated
showed
higher
content,
could
associated
with
elevating
PBGD
activity
(Chl
biosynthesis
enzyme)
suppressing
catabolic
enzyme
(Chlase
MDCase).
Under
high-temperature
levels
gene
encoding
factors
involved
catabolism
were
down-
upregulated,
respectively,
this
trend
was
reversed
heat-stressed
seedlings.
In
addition,
exogenous
application
boosted
enzymes,
along
their
genes,
only
plants
stressed.
Furthermore,
heat-shock-related
(HSP90,
HSP70,
HsfA1)
elevated
Put-treated,
high-temperature-stressed
Taken
together,
our
indicate
increases
tolerance
seedlings,
concentrations
activity,
modulating
endogenous
free
PA
defense
upregulating
genes.
BMC Plant Biology,
Journal Year:
2024,
Volume and Issue:
24(1)
Published: July 30, 2024
Straw
incorporation
serves
as
an
effective
strategy
to
enhance
soil
fertility
and
microbial
biomass
carbon
(SMBC),
which
in
turn
improves
maize
yield
agricultural
sustainability.
However,
our
understanding
of
nitrogen
(N)
fertilization
straw
into
microenvironment
is
still
evolving.
This
study
explored
the
impact
six
N
rates
(N0,
N100,
N150,
N200,
N250,
N300)
with
without
on
fertility,
SMBC,
enzyme
activities,
yield.
Results
showed
that
both
management
significantly
affected
organic
(SOC),
total
N,
Specifically,
N250
treatment
combined
increased
SOC,
SMBC
compared
lower
rates.
Additionally,
activities
such
urease,
cellulase,
sucrose,
catalase,
acid
phosphatase
reached
their
peak
during
V6
growth
stage
N200
under
for
conditions.
Compared
N300
treatments
traditional
planting,
residue
by
8.30
4.22%,
respectively.
All
measured
parameters,
except
cellulase
activity,
were
higher
spring
than
autumn
across
years,
notable
increases
observed
2021.
These
findings
suggest
optimal
levels
(STN),
along
crucial
sustaining
enhancing
grain
treatments.
The Journal of Agricultural Science,
Journal Year:
2023,
Volume and Issue:
161(3), P. 339 - 355
Published: June 1, 2023
Abstract
The
current
study
aimed
to
investigate
biofortification
of
maize
grown
under
different
irrigation
intervals,
i.e.
15,
20
and
25
days
(hereinafter
referred
as
IR15,
IR20
IR25,
respectively),
using
foliar
application
treatments
(silicon
(Si),
zinc
(Zn),
silver
nanoparticles
(AgNPs),
Si
+
Zn,
AgNPs,
Zn
AgNPs
AgNPs)
in
two
growing
seasons,
2020
2021.
A
split-plot
design
with
four
replications
was
used,
where
intervals
were
assigned
main
plots
subplots,
respectively.
IR15
received
a
total
7925
m
3
/ha
water
divided
over
seven
irrigations,
while
5690
five
irrigations
IR25
4564
irrigations.
highest
yield
grain
quality
observed
plants
irrigated
at
15-day
intervals.
Spraying
the
canopy
Si,
either
individually
or
combination,
reduced
negative
impact
stress
caused
by
longer
on
plant
growth,
yield,
components
protein
content.
In
most
studied
parameters,
except
for
proline
content,
showed
high
positive
impact,
especially
100-kernel
weight
(KW).
contrast,
effects
contents
but
harvest
index.
Collectively,
resulted
values
all
followed
Zn.
conclusion,
our
results
suggest
that
an
interval
15
combined
has
potential
improve
deficit
stress.
Journal of Plant Nutrition,
Journal Year:
2023,
Volume and Issue:
47(2), P. 314 - 331
Published: Nov. 15, 2023
AbstractModern
agriculture
has
a
major
impact
on
natural
resources
in
terms
of
exploitation
and
use.
Land
water
are
being
exploited
by
ever-increasing
population
pressures.
High
nutritional
inputs
such
as
mineral
nitrogen
(N)
fertilization
required
to
achieve
higher
sustainable
yields.
Although
crop
production
depends
N
fertilizers,
the
excessive
inefficient
use
is
worldwide
issue
that
increases
costs
pollutes
environment.
Strategies
increase
efficiency
(NUE)
would
be
key
reducing
these
negative
impacts
improved
agronomic
practices.
To
develop
effective
management
approaches,
it
helpful
understand
effect
various
aspects
growth,
development,
physiological
processes
crops.
In
this
review,
we
highlighted
recent
progress
made
improve
NUE
adopting
primarily
practices
may
more
environmentally
economically
beneficial,
including
site-specific-nitrogen
management,
enhanced
fertilizer
resources,
conservation
drip
fertigation,
modeling,
precision
agriculture.
The
first
section
discusses
morphological
effects
crops
while
second
section,
strategies
for
growing
with
discussed.Keywords:
Agronomic
managementconservation
agriculturecrop
modelingnitrogen
efficiencyprecision
agriculturesustainability
Disclosure
statementNo
potential
conflict
interest
was
reported
authors.
Abstract
Understanding
the
effect
of
nitrogen
(N)
rates
on
hemp
(
Cannabis
sativa
)
cultivation
is
crucial
for
optimizing
crop
yield
and
quality.
This
study
evaluated
effectiveness
handheld
(active)
drone
(passive)
sensors
in
measuring
reflectance
predicting
key
growth
parameters
response
to
varying
N
application
rates.
The
was
conducted
during
summer
2022
at
Plant
Science
Research
Education
Unit
Citra,
FL.
trial
involved
three
cultivars—NWG‐2730,
Yuma,
IH‐Williams—subjected
six
(0,
56,
112,
168,
224,
280
kg/ha).
Reflectance
data
were
collected
76
days
after
planting
calculate
normalized
difference
vegetation
index
(NDVI)
red
edge
(NDRE).
Results
indicated
that
increased
led
higher
NDVI
NDRE
values
cultivars
had
not
yet
reached
senescence.
from
sensor
showed
strongest
relationship
with
most
accurate
predictor
in‐season
biomass
yield,
final
plant
height.
However,
predictive
efficiency
varied
by
cultivar
decreased
as
plants
approached
Early‐season
sensing
proved
more
reliable
due
lower
impact
senescent
leaves.
highlights
potential
technology
cultivation,
offering
insights
into
forecasting,
variable
management,
high‐throughput
phenotyping.
Future
research
should
further
explore
enhance
precision
agriculture
practices
cultivation.