Crop Science,
Journal Year:
2024,
Volume and Issue:
65(1)
Published: Dec. 28, 2024
Abstract
Plants
are
often
exposed
to
fluctuating
light
from
a
few
seconds
minutes
due
cloud
movements,
mutual
shading
of
leaves,
and
change
in
the
angle
sun.
Slow
stomatal
response
leads
carbon
loss,
but
influence
planting
density
on
fluctuation
frequency
gain
has
yet
be
fully
explored.
To
fill
this
knowledge
gap,
we
investigated
leaf
morphology,
anatomy
rate,
nitrogen
content,
biomass,
yield
under
low
density,
moderate
high
(HD)
cotton
cultivar
(
Gossypium
hirsutum
L.).
The
results
showed
that
higher
significantly
increased
at
lower
canopy.
Stomatal
size
decreased
with
increase
while
total
was
consistent.
had
greater
plasticity
determining
maximum
conductance
than
size.
Faster
rate
HD
attributed
smaller
denser
stomata
abaxial
side.
Therefore,
treatment
faster
photosynthetic
induction
induction,
resulting
gain.
We
conclude
achieved
by
optimization
anatomy,
especially
side,
plays
crucial
role
obtaining
more
gain,
field.
This
finding
indicates
selecting
varieties
rapid
traits
appropriate
densities
may
optimize
use
achieve
yields.
Journal of Agronomy and Crop Science,
Journal Year:
2025,
Volume and Issue:
211(3)
Published: May 1, 2025
ABSTRACT
Day
and
night
high
temperatures
(HT)
has
become
an
inevitable
environmental
factor
in
maize
production.
However,
few
studies
have
compared
the
differences
photosynthetic
characteristics
of
leaves
yield
formation
during
grain
filling
under
daytime
HT
(DH)
nighttime
(NH).
This
study
utilised
waxy
a
temperature‐controlled
pot
experiment
to
assess
impacts
DH,
NH
combination
DH
(DNH)
treatments
at
early
stage.
Compared
control,
three
resulted
decrease
weight
volume
middle
late
stage,
degree
influence
was
DNH
>
NH.
During
grain‐filling
process,
reduced
leaf
water
content,
disturbed
protein
biosynthesis
antioxidant
system,
accelerated
chlorophyll
hydrolysis,
inhibited
phosphoenolpyruvate
carboxylase
Ribulose‐1,5‐bisphosphate
activities,
post‐silking
dry
matter
accumulation
translocation.
affected
efficiency
by
changing
gas
exchange
parameters
PSII
reaction,
which
turn
influenced
maximum
photochemical
efficiency,
electron
transport
rate,
energy
conversion.
treatment
only
some
stages
had
less
effect
on
synthesis
enzyme
activity
than
DNH.
These
new
findings
complement
comparison
between
maize.
Nitrogen,
Journal Year:
2025,
Volume and Issue:
6(2), P. 20 - 20
Published: March 25, 2025
Sweet
corn
(Zea
mays
convar.
saccharata
var.
rugosa)
is
an
important
crop
in
the
United
States
(US),
particularly
southeastern
region.
While
effective
nitrogen
(N)
management
essential
for
optimizing
yields,
sandy
soils
and
variable
precipitation
this
region
impact
N
uptake.
This
study
evaluates
effects
of
several
rates
(ranging
from
224
to
336
kg
ha−1)
fertilizer
application
timing
(N
applied
at
emergence
side-dress
stages)
on
sweet
growth
yield
under
subtropical
environmental
conditions
US.
Field
experiments
were
conducted
over
three
years
states
Georgia
(2020)
Alabama
(2021
2022).
In
general,
weather
each
season
had
a
direct
growth,
development,
parameters.
Among
all
locations,
(2022)
allowed
highest
yields
(17,380
ha−1),
which
could
be
attributed
favorable
that
required
moderate
(224–280
ha⁻1).
Contrarily,
2021
2020
impacted
soil
availability,
consequently
leading
negative
growth.
Overall,
strategies
are
indicated
region-
season-specific
order
enhance
production
while
protecting
environment
excessive
losses.
Further
research
still
refine
these
improve
predictive
models
diverse
climatic
conditions.
Agronomy,
Journal Year:
2024,
Volume and Issue:
14(5), P. 1040 - 1040
Published: May 14, 2024
Cotton
photosynthetic
efficiency
and
the
root–shoot
relationship
are
two
important
physiological
indexes
affecting
final
yield,
but
interactive
effects
of
plastic
film
mulching
planting
density
on
cotton
have
rarely
been
reported.
We
aimed
to
investigate
optimal
plant
with
or
without
for
improved
seed
yield
in
southern
Xinjiang.
Therefore,
a
two-year
field
experiment
was
conducted
(with
mulching)
(D1:
9
×
104
plants
ha−1;
D2:
18
D3,
22
ha−1,
local
conventional
density;
D4,
27
ha−1)
relationship,
parameters,
yield.
Our
results
showed
that
under
at
all
densities,
economic
income
significantly
lower
comparison
2023.
Compared
D2
increased
by
6.9%
12.2%,
either
mulching,
respectively.
The
highest
increase
due
greatest
improvements
root
production
capacity
photosynthesis.
boll
system
(BCR)
loading
(BLR)
were
among
treatments
being
9.0%
16.9%
higher
than
D3
2022
However,
ratio
(R/S)
7.1%
Moreover,
moderate
(D2)
SPAD
value,
chlorophyll
fluorescence
(Fv/Fm
PIabs),
parameter
(Pn,
Tr,
Gs)
decreased
Ci
compared
other
both
years.
Further
analyses
correlation
analysis
highly
positive
correlated
BLR,
BCR,
parameter.
In
summary,
suitable
(18
combined
has
potential
obtain
high
yields
enhancing
assimilates,
improving
production,
providing
reference
mulching.
Agronomy,
Journal Year:
2024,
Volume and Issue:
14(7), P. 1352 - 1352
Published: June 22, 2024
The
optimal
combination
of
the
nitrogen
fertilizer
application
and
planting
density
with
reference
to
silage
maize
yield
quality
remains
unclear.
We
hypothesized
that
increasing
both
would
increase
yields
following
law
diminishing
returns.
Yayu26,
a
cultivar,
was
used
in
split-plot
experiment
investigate
effects
on
growth,
nutrient
characteristics,
chlorophyll
fluorescence.
main
plots
were
assigned
three
densities:
60,000
(A1),
75,000
(A2),
90,000
(A3)
plants
hm−2,
subplots
four
rates:
0
(B1),
120
(B2),
240
(B3),
360
(B4)
kg
hm−2.
results
showed
rate
enhanced
yield.
Nitrogen
accumulation
agronomic
use
efficiency
peaked
at
Structural
equation
modeling
affected
properties
by
influencing
fluorescence
parameters
efficiency,
ultimately
resulting
positive
effect
A3
×
B2
treatments
exhibited
higher
accumulation,
potentially
compensating
for
any
deficiencies
dry-matter
Therefore,
treatment
evaluated
as
achieve
sustainable
economically
feasible
production.
Agriculture,
Journal Year:
2024,
Volume and Issue:
14(5), P. 678 - 678
Published: April 26, 2024
Economic
consumption
and
environmental
impacts
due
to
potassium
(K)
inputs
in
agriculture
are
gaining
increasing
attention.
It
is
urgent
improve
K
use
efficiency
(KUE)
for
agricultural
development.
Delayed
sowing
has
been
shown
maintain
grain
yield
winter
wheat.
Still,
there
needs
be
more
information
regarding
the
effect
of
date
on
crop
status
evaluated
by
nutrition
index
(KNI),
KUE,
uptake
(UPE),
utilization
(UTE),
concentration
(GKC).
Here,
we
assessed
Shannong23
Tainong18
wheat
cultivars
with
three
treatments
composed
26
September
(early
sowing),
8
October
(normal
22
(late
sowing)
2021–2022
2022–2023
growing
seasons.
The
influences
KNI,
tillering,
formation,
UPE,
UTE,
transport,
GKC
were
examined.
Our
study
indicated
that
late
was
an
almost
optimal
nutritional
situation,
whereas
early
normal
under
situations
excess
K.
As
delayed,
aboveground
(AGK),
spike
number
per
unit
area
decreased;
UTE
increased;
KUE
unchanged.
A
positive
correlation
between
KNI
UPE
a
negative
found,
no
significant
observed.
Late
promoted
transport
from
pre-anthesis
accumulation
vegetative
organs
grain,
resulting
higher
GKC,
which
could
lead
high
quality
recovery.
Therefore,
can
efficiently
increase
implying
delayed
reduce
input,
favoring
sustainable
Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 25, 2024
Abstract
The
photosynthetic
mechanism
responsible
for
the
differences
in
yield
between
different
rapeseed
varieties
remains
unclear,
and
there
have
been
no
consensus
definite
conclusions
about
relationship
photosynthesis
yield.
Representation
of
whole
plant
by
measuring
performance
at
a
single
site
may
lead
to
biased
results.
In
this
study,
we
comprehensively
analyzed
main
organs
four
high-yielding
seedling,
bud,
flowering,
podding
stages.
canopy
parameters
were
derived
area,
net
rate,
chlorophyll
content,
capacity
was
used
evaluate
light
utilization
efficiency
establish
traits
results
showed
that
significant
among
parts
plants.
trait
differed
significantly
when
represented
leaves
positions
varieties,
exhibited
sensitivity
intensity.
whole-plant
study
highest
second
seedling
bud
stage,
respectively,
both
which
closely
positively
correlated
with
yield,
ZY501
had
higher
than
other
these
two
stages
due
its
larger
area.
Canopy
content
also
capacity.
These
indicated
investigation
characteristics
sites
might
provided
new
evaluation
index
studying
rapeseed.
Our
clarified
area
has
greater
contribution
efficiency,
theoretical
basis
investigating
underlying
high
crop
Agriculture,
Journal Year:
2024,
Volume and Issue:
14(11), P. 1892 - 1892
Published: Oct. 25, 2024
Southern
Xinjiang
is
an
important
soybean
production
region
in
China.
However,
the
short
growing
season
and
cultivation
of
winter
crops
(such
as
wheat)
limit
expansion
planting
areas.
An
increased
density
can
compensate
for
loss
yield
due
to
delayed
sowing.
To
identify
quantitative
relationship
between
days,
a
two-year
field
experiment
was
conducted
at
Tarim
University
Agronomy
Experiment
Station.
Two
sowing
dates
(April
7
(S1)
May
(S2))
three
densities
206,800
plants·ha−1
(D1),
308,600
(D2),
510,200
(D3)
were
used
compare
various
plant
growth
parameters
canopy
characteristics.
Late
high
significantly
height
(S2
37.3%
higher
than
S1,
D3
17.6%
8.8%
D1
D2),
main
stem
internode,
petiole
length,
mean
tilt
angle
leaves
22.5%
11.7%
D2)
but
reduced
diameter
(D3
28.6%
12.5%
lower
branch
number
26.7%
D2
75%
D1),
light
transmittance
49.2%
36.7%
20.8%
photosynthetic
rate,
dry
matter.
The
highest
achieved
S1D1,
lowest
found
S2D1.
Overall,
results
suggest
that
earlier
contribute
achieving
optimum
structure
yield.
Our
conclusions
provide
reference
southern
Xinjiang.
