Chinese
milk
vetch
(CMV)
is
the
most
popular
leguminous
green
manure
in
manure-rice
rotation
system
southern
China.
Although
bacteria
that
work
symbiosis
with
CMV
fix
majority
of
nitrogen
(N)
agroecosystems,
diazotrophs
are
crucial
to
N-cycle
and
contribute
plant
available
N
pool.
The
present
study's
objectives
were
examine
impacts
moving
partial
phosphorus
(P)
fertilizer
from
rice
season
a
CMV-rice
on
soil
nutrients
content,
enzyme
activity
stoichiometry,
diazotrophic
community
structure
at
full
blooming
stage.
treatments
included
control,
no
any
fertilizers
application
winter
fallow-rice
rotation,
P0,
P1,
P2,
P3,
which
meant
0,
1/3,
2/3,
3/3,
respectively,
dose
P
addition
(60
kg
ha-1
P2O5)
one
applied
remaining
season.
Comparing
P3
increased
dry
biomass
yield
2018
2021
seasons;
Also,
these
treatments,
total
(TN),
organic
matter
(OM),
(AP)
contents
improved
by
34%-49%,
43%-55%,
110%-130%,
respectively.
Alkaline
phosphatase
L-leucine
aminopeptidase
activities
reduced
significantly
under
P1
treatment,
indicating
mineralization
limitation
microorganisms.
relative
abundance
Frankia
(1.5%-2.7%)
Mesorhizobium
(0.4%-3.5%).
In
addition,
correlation
analysis
showed
Frankia,
Skermanella,
positively
correlated
TN,
OM,
AP,
ammonium-N,
nitrate-N
contents.
conclusion,
split
reshaped
structure,
The Science of The Total Environment,
Год журнала:
2024,
Номер
926, С. 172016 - 172016
Опубликована: Март 27, 2024
Vegetables
are
the
most
consumed
non-staple
food
globally,
and
their
production
is
crucial
for
dietary
diversity
public
health.
Use
of
enhanced-efficiency
fertilizers
(EEFs)
in
vegetable
could
improve
yield
quality
while
reducing
reactive
nitrogen
(Nr)
losses.
However,
different
management
environmental
factors
has
significantly
distinctive
impacts
on
effectiveness
EEFs.
In
this
study,
a
worldwide
meta-analysis
based
data
collected
from
144
studies
was
performed
to
assess
EEF
(nitrification
inhibitor
[NI]
polymer-coated
urea
[PCU])
application
yield,
(N)
uptake,
use
efficiency
(NUE),
Nr
losses
(nitrous
oxide
(N2O)
emissions,
ammonia
(NH3)
volatilization,
nitrate
(NO3−)
leaching).
The
effects
applied
EEFs
yields
N2O
emissions
were
assessed
with
practices
(cultivation
system,
type
N
rate)
conditions
(climatic
soil
properties).
Compared
conventional
fertilizers,
improved
(7.5–8.1
%)
(vitamin
C
increased
by
10.7–13.6
%,
soluble
sugar
9.3–10.9
content
reduced
17.2–25.1
%).
Meanwhile,
demonstrated
great
potential
loss
reduction
(N2O
40.5
NO3−
leaching
45.8
without
compromising
yield.
NI
effective
(40.5
%),
but
it
NH3
volatilization
(32.4
While
PCU
not
only
(24.4
(28.7
also
(74.5
And
rate,
pH,
organic
carbon
(SOC)
main
affecting
Moreover,
yield-enhancing
effect
better
at
low
availability
SOC,
respectively.
Thus,
important
adopt
appropriate
strategy
targeting
specific
implemented
optimal
rate.
Frontiers in Microbiology,
Год журнала:
2024,
Номер
15
Опубликована: Март 13, 2024
Background
and
aims
Soil
salinity
negatively
affects
crop
development.
Halotolerant
nitrogen-fixing
bacteria
(HNFB)
arbuscular
mycorrhizal
fungi
(AMF)
are
essential
microorganisms
that
enhance
nutrient
availability
salt
tolerance
in
saline
soils.
Studying
the
impact
of
HNFB
on
AMF
communities
using
biofertilizers
can
help
selecting
optimal
HNFB-AMF
combinations
to
improve
productivity
Methods
We
established
three
experimental
groups
comprising
apple
plants
treated
with
low-nitrogen
(0
mg
N/kg,
N0),
normal-nitrogen
(200
N1),
high-nitrogen
(300
N2)
fertilizer
under
stress
without
(CK,
addition
1,500
mL
sterile
water
+2
g
diatomite),
or
[BIO,
mixed
bacterial
preparation
(including
Bacillus
subtilis
HG-15
velezensis
JC-K3)].
Results
inoculation
significantly
increased
microbial
biomass
relative
abundance
beta-glucosidase-related
genes
rhizosphere
soil
identical
nitrogen
application
levels
(
p
<
0.05).
High-nitrogen
treatment
reduced
diversity
beta-glucosidase,
acid
phosphatase,
urea-related
genes.
A
two-way
analysis
variance
showed
combined
could
affect
physicochemical
properties
Specifically,
resulted
a
higher
Glomus-MO-G17-VTX00114
compared
CK
group
at
equal
levels.
Conclusion
The
community
rhizospheres
is
influenced
by
study
reveals
how
varying
mediate
relationship
between
exogenous
HNFB,
properties,
microbes.
Frontiers in Microbiology,
Год журнала:
2025,
Номер
16
Опубликована: Июнь 2, 2025
Introduction
Long-term
studies
on
the
dynamic
changes
in
nitrogen
metabolism
and
functional
microbial
communities
under
anaerobic
conditions,
particularly
those
driven
by
organic
amendments,
remain
scarce.
Methods
We
conducted
a
year-long
microcosm
experiment
using
three
amendments—aerobically
fermented
pig-manure
digestate
(ACM),
compost
(ACP)
straw
powder
(ACS)—alongside
an
inorganic
fertilizer-only
control
(ACN).
Results
Temporal
shifts
revealed
that
amendments
drove
distinct
pathways.
Amendments
of
promoted
proliferation
nitrogen-mineralizing
bacteria
such
as
Ramlibacter
Lysobacter
,
leading
to
significant
ammonium
accumulation.
After
12-month
incubation,
ACM
treatment
caused
75.6-fold
increase
ammonium,
43.4%
rise
total
(TN),
27.0%
carbon
(TOC).
In
contrast,
ACS
exhibited
superior
fixation,
with
average
1.69-fold
higher
rate
than
5.30
fold
ACP
The
enriched
cellulolytic
nitrogen-fixing
bacteria,
including
Clostridium
archaea.
Discussion
This
study
provides
profound
insights
unique
pathways
influenced
anoxic
ultimately
offering
valuable
into
improved
soil
fertility
sustainable
management
practices
agricultural
systems.
