Research Square (Research Square),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Nov. 14, 2023
Abstract
Aims
The
mechanisms
underlying
nitrous
oxide
(N
2
O)
production
in
limed
soils
with
N
fertilizer
application
are
not
well
understood.
This
study
aimed
to
investigate
the
effects
of
liming
on
nitrite
(NO
-
)
accumulation
and
its
contribution
subsequent
O
varying
concentrations
ammonium
(NH
4
+
additions
(50,
100,
250
mg
NH
-N
kg
-1
soil).
Methods
Soil
microcosm
incubation
was
designed
NO
acidic
vegetable
soil
after
different
levels
inputs.
Sterilization
samples
used
distinguish
biotic
abiotic
productions.
DNA
extraction
relative
functional
gene
detection
provided
molecular
evidence.
Results
Elevating
pH
alkaline
(pH
8.5)
through
caused
a
shift
microbial
community,
an
increase
abundance
ammonia
oxidizing
bacteria
(AOB)
decrease
(NOB).
resulted
conversion
half
added
,
higher
leading
more
cumulative
.
However,
resulting
from
relatively
modest
(max.
0.89
μg
per
hour).
Further
experiments
demonstrated
that
81.9-93.6%
associated
driven
by
processes
under
aerobic
conditions,
while
drove
42.4-54.8%
anaerobic
conditions.
Additionally,
reduced
92%
compared
observed
soil.
Conclusion
Liming
promotes
but
reduces
emissions.
Ecotoxicology and Environmental Safety,
Journal Year:
2023,
Volume and Issue:
263, P. 115387 - 115387
Published: Aug. 18, 2023
Acidic
soils
cover
approximately
50
%
of
the
arable
land
with
high
N2O
emission
potential.
3,4-dimethylpyrazole
phosphate
(DMPP)
inhibits
from
soils;
however,
its
efficiency
is
affected
by
acidity.
Liming
used
for
soil
conditioning
to
ameliorate
effects
In
present
study,
we
investigated
liming
on
DMPP
in
inhibiting
acidic
and
mechanisms
involved.
We
evaluated
impact
liming,
DMPP,
combined
application
microbial
responses
two
Zengcheng
(ZC)
Shaoguan
(SG)
City,
Guangdong
Province,
China.
Soils
were
subjected
four
treatments:
un-limed
(low
pH)
+
urea
(LU),
(LD),
limed
(high
(HU),
(HD)
analyses
mineral
N,
emissions,
full-length
16S
metagenome
sequencing.
The
results
revealed
that,
HU
significantly
decreased
increased
17.8
235.0
ZC
SG,
respectively,
compared
LU.
This
was
caused
a
trade-off
between
production
consumption
after
where
communities
N-cycling
functional
genes
show
various
compositions
different
soils.
LD
reduced
23.5
ZC,
whereas
1.5
observed
SG.
Interestingly,
considerably
improved
Compared
LU,
HD
emissions
61.2
48.5
respectively.
Synergy
mitigation
lime
application,
which
attributed
changes
dominant
nitrifiers
increase
denitrifiers.
high-efficiency
strategy
can
ensure
agricultural
sustainability
minimal
environmental
damage.
Research Square (Research Square),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Nov. 14, 2023
Abstract
Aims
The
mechanisms
underlying
nitrous
oxide
(N
2
O)
production
in
limed
soils
with
N
fertilizer
application
are
not
well
understood.
This
study
aimed
to
investigate
the
effects
of
liming
on
nitrite
(NO
-
)
accumulation
and
its
contribution
subsequent
O
varying
concentrations
ammonium
(NH
4
+
additions
(50,
100,
250
mg
NH
-N
kg
-1
soil).
Methods
Soil
microcosm
incubation
was
designed
NO
acidic
vegetable
soil
after
different
levels
inputs.
Sterilization
samples
used
distinguish
biotic
abiotic
productions.
DNA
extraction
relative
functional
gene
detection
provided
molecular
evidence.
Results
Elevating
pH
alkaline
(pH
8.5)
through
caused
a
shift
microbial
community,
an
increase
abundance
ammonia
oxidizing
bacteria
(AOB)
decrease
(NOB).
resulted
conversion
half
added
,
higher
leading
more
cumulative
.
However,
resulting
from
relatively
modest
(max.
0.89
μg
per
hour).
Further
experiments
demonstrated
that
81.9-93.6%
associated
driven
by
processes
under
aerobic
conditions,
while
drove
42.4-54.8%
anaerobic
conditions.
Additionally,
reduced
92%
compared
observed
soil.
Conclusion
Liming
promotes
but
reduces
emissions.
