Agronomy,
Journal Year:
2024,
Volume and Issue:
14(12), P. 3060 - 3060
Published: Dec. 22, 2024
Straw
returning
(R)
combined
with
the
application
of
a
decomposition
agent
(RD)
can
increase
crop
yield
and
soil
carbon
(C)
storage.
However,
effect
RD
on
nitrous
oxide
(N2O)
emissions
in
tropical
areas
remains
poorly
understood.
In
this
study,
an
situ
experiment
was
performed
under
different
water
management
strategies
(long-term
flooding
or
alternate
wetting
drying)
R
treatments
to
evaluate
N2O
rice
yield.
The
SOC
TN
contents
were
significantly
lower
treatment
than
treatment.
increased
yield;
however,
further
yield-scaled
higher
no-straw-returning
greatly
reduced
various
compared
those
Moreover,
control.
distinctly
drying
long-term
flooding.
Our
results
indicated
that
straw
agents
effectively
reduce
areas.
Global Change Biology,
Journal Year:
2024,
Volume and Issue:
30(2)
Published: Feb. 1, 2024
Abstract
Maintaining
or
even
increasing
crop
yields
while
reducing
nitrous
oxide
(N
2
O)
emissions
is
necessary
to
reconcile
food
security
and
climate
change,
the
metric
of
yield‐scaled
N
O
emission
(i.e.,
per
unit
yield)
at
present
poorly
understood.
Here
we
conducted
a
global
meta‐analysis
with
more
than
6000
observations
explore
variation
patterns
controlling
factors
for
maize,
wheat
rice
associated
potential
mitigation
options.
Our
results
showed
that
average
across
all
available
data
followed
order
(322
g
Mg
−1
,
95%
confidence
interval
[CI]:
301–346)
>
maize
(211
CI:
198–225)
(153
144–163).
Yield‐scaled
individual
crops
were
generally
higher
in
tropical
subtropical
zones
temperate
zones,
also
trend
towards
lower
intensities
from
low
high
latitudes.
This
was
better
explained
by
climatic
edaphic
fertilizer
management,
their
combined
effect
predicted
70%
variance.
Furthermore,
our
analysis
significant
decrease
use
efficiency
production
systems
cereal
>10
ha
(maize),
6.6
(wheat)
6.8
(rice),
respectively.
highlights
indicators
can
be
used
as
valuable
proxies
reconciling
trade‐offs
between
mitigation.
For
three
major
staple
crops,
fertilization
up
30%,
optimizing
timing
placement
application
using
enhanced‐efficiency
fertilizers
significantly
reduced
similar
yields.
data‐driven
assessment
provides
some
key
guidance
developing
effective
targeted
adaptation
strategies
sustainable
intensification
production.
Journal of Environmental Management,
Journal Year:
2024,
Volume and Issue:
352, P. 120087 - 120087
Published: Jan. 12, 2024
Saline
water
has
proven
to
be
one
of
the
alternative
sources
freshwater
for
agricultural
irrigation
in
water-scarce
areas.
However,
changes
farmland
ecology
caused
by
saline
remain
unclear.
In
this
study,
six
salinities
(CK:
1.3
dS
m
Agricultural Water Management,
Journal Year:
2024,
Volume and Issue:
297, P. 108843 - 108843
Published: April 29, 2024
Biochar
application
to
agricultural
fields
is
an
effective
carbon
sequestration
measure
that
has
the
potential
reduce
N2O
emissions
and
increase
soil
water
holding
capacity.
However,
interaction
mechanisms
of
biochar
under
deficit
irrigation
on
remain
unclear.
A
two-year
field
experiment
conducted
in
Guanzhong
Plain,
China,
order
quantify
effects
from
winter
wheat–summer
maize
crop
rotation
investigate
nitrification
denitrification.
According
combination
actual
evapotranspiration-based
scheduling,
four
treatments
are
designed
(B1W100:
30
t·ha−1
+
ET;
B1W80:
t·ha−1+
0.8
B0W100:
no
B0W80:
0.8ET).
The
flux,
physical
chemical
properties,
key
functional
gene
abundance
related
denitrification
at
different
growth
stages
investigated
discussed.
Results
show
between
significantly
reduces
emissions.
During
wheat
season,
by
average
12.9%
15.2%,
respectively.
Deficit
also
17.4%
15.5%,
Pearson
correlation
analysis
shows
correlated
with
water-filled
pore
space
during
phase
intense
Soil
determined
for
both
maize.
Maximum
observed
time
when
enter
stage
their
peak
jointing
stage.
With
addition
irrigation,
nirK
nosZ
genes
increases
AOB
amoA
decreases.
These
results
suggest
a
better
solution
soils.
Soil Use and Management,
Journal Year:
2025,
Volume and Issue:
41(2)
Published: April 1, 2025
ABSTRACT
The
impact
of
straw
incorporation
on
nitrous
oxide
(N
2
O)
emissions
has
long
been
a
research
focus.
However,
N
O
from
protected
vegetable
soils
with
and
their
response
to
increased
nitrogen
(N)
input
are
not
well
understood.
To
address
this
knowledge
gap,
greenhouse
without
6‐year
were
studied
in
laboratory
experiment
aerobic
incubations.
Urea‐N
solutions
applied
achieve
contents
0,
20,
40,
80,
120
mg
urea‐N
kg
−1
soil.
Soil
O,
carbon
dioxide
(CO
)
oxygen
(O
dynamics
monitored
using
robotized
incubation
system,
while
ammonium
(),
nitrite
nitrate
()
measured.
Straw
significantly
reduced
decreased
emission
fluxes.
Cumulative
exponentially
rising
rates,
but
lowered
mean
cumulative
fertiliser‐induced
factors
at
all
rates.
CO
linearly
elevated
average
fluxes,
regardless
addition.
also
accelerated
depletion
across
content
emerged
as
the
most
important
predictor
irrespective
incorporation.
findings
show
that
decreases
accumulation
mitigates
intensively
managed
soils.
This
study
provides
sustainable
agricultural
management
approach
balances
soil
fertility
enhancement
gas
reduction.
Soil Science Society of America Journal,
Journal Year:
2024,
Volume and Issue:
88(3), P. 803 - 815
Published: Feb. 25, 2024
Abstract
Incorporating
large
amounts
of
woody
biomass
into
soil,
such
as
in
whole
orchard
recycling
(WOR),
can
promote
carbon
sequestration,
nutrient
recycling,
and
ecosystem
health
agricultural
fields.
Yet
uncertainty
regarding
the
effects
WOR
on
soil
(C)
nitrogen
(N)
dynamics
influences
management
decisions.
The
objective
this
research
was
to
evaluate
woodchip
(WC)
size
interaction
with
N
fertilization
dioxide
(CO
2
)
nitrous
oxide
(N
O)
emissions.
An
8‐month
incubation
experiment
incorporating
WC
(4%
w/w,
equivalent
∼40
tons
per
acre)
four
sieved
sizes
(0.2–1.6,
1.6–3.2,
3.2–6.4,
6.4–12.7
mm)
without
applications
conducted.
All
treatments
showed
that
CO
emission
peaked
within
first
week,
then
decreased
drastically
afterward.
peak
delayed
value
(WC
increased).
finest
(<1.6
yielded
lowest
total
emissions
resulted
greatest
increase
C
at
end
incubation.
Nitrogen
application
reduced
by
1%
smallest
8%–9%
for
those
larger
than
1.6
mm.
O
spiked
following
each
fertilizer
from
size,
suggesting
substantial
immobilization.
results
imply
delay
mineralization
reduce
initial
immobilization
risks,
but
may
have
stabilized
increased
organic
carbon.
This
our
understanding
be
used
management.
