Environment International,
Journal Year:
2024,
Volume and Issue:
195, P. 109202 - 109202
Published: Dec. 10, 2024
Growing
evidence
suggests
that
the
use
of
manure
containing
residual
antibiotics
universally
leads
to
an
increase
in
soil
antibiotic
resistance
genes
(ARGs).
However,
there
is
limited
understanding
influence
long-term
antibiotic-free
fertilization
and
differences
between
chemical
fertilizer
on
ARGs.
This
study
aimed
quantify
assembly
patterns
resistome
by
situ
probing
bacterial
community
environmental
variations
field
soils
have
been
subjected
exposure
and/or
from
animals
without
amendments.
Long-term
slightly
impacts
diversity
resistomes,
with
85.5
%
total
ARGs
mobile
genetic
elements
(MGEs)
being
common
across
all
treatment
types,
while
significantly
increasing
their
abundances
0.68
a
maximum
0.90
copies/16S
rRNA.
The
rise
ARG
was
less
pronounced
when
using
compared
fertilizer,
particularly
for
Rank
Ⅱ
were
combined,
significant
nutrients
(such
as
available
nitrogen
organic
matter)
MGEs
occurred,
leading
enrichment
microbial
populations,
especially
certain
resistant
species,
Ⅰ
Despite
various
factors
like
communities,
properties,
heavy
metals,
MGEs,
had
most
standardized
effects
shaping
through
both
direct
indirect
pathways.
Our
findings
indicates
can
lower
risk
residues
promote
sustainable
farming
practices,
it
may
not
fully
eliminate
prevalence
ARGs,
highlighting
need
more
comprehensive
strategies
address
agriculture
rather
than
simply
prohibiting
antibiotics.
Soil Biology and Biochemistry,
Journal Year:
2024,
Volume and Issue:
191, P. 109354 - 109354
Published: Feb. 13, 2024
Agriculture
is
responsible
for
30–50%
of
the
yearly
CO2,
CH4,
and
N2O
emissions.
Soils
have
an
important
role
in
production
consumption
these
greenhouse
gases
(GHGs),
with
soil
aggregates
inhabiting
microbes
proposed
to
function
as
biogeochemical
reactors,
processing
gases.
Here
we
studied,
first
time,
relationship
between
GHG
fluxes
aggregate
stability
determined
via
laser
diffraction
analysis
(LDA)
agricultural
soils,
well
effect
sustainable
management
strategies
thereon.
Using
static
chamber
method,
all
soils
were
found
be
sinks
CH4
sources
CO2
N2O.
The
application
organic-amendments
did
not
a
conclusive
on
fluxes,
but
tilled
emitted
more
CO2.
LDA
was
useful
improved
method
assessing
stability,
it
allows
determination
multiple
classes
their
structural
composition,
thereby
overcoming
limitations
traditional
wet
sieving.
Organic
matter
content
main
steering
factor
stability.
presence
persistent
stable
disintegration
coefficient
organic-amended
no-tilled
soils.
Predictive
modelling
showed
that,
especially
governing
fluxes.
Higher
uptake
rates
associated
higher
while
emissions
increased
Altogether,
shown
that
can
used
steer
soil's
and,
both
consequently
outright,
creating
potential
contribute
mitigation
ABSTRACT
The
enhancement
of
plant
growth
by
soil
fertilization
and
microbial
inoculation
involves
different
mechanisms,
particularly
altering
the
phyllosphere
microbiome.
This
study
investigated
how
nitrogen
(N)
fertilization,
Pseudomonas
fluorescens
strain
R124
their
combined
effects
influence
different‐aged
Salix
matsudana
cuttings
modulating
N
dynamics
within
Results
showed
that
P.
was
significantly
more
effective
than
alone,
enhancing
biomass,
nutrient
uptake,
content
root
development
90.51%,
18.18%,
72.74%
126.20%,
respectively.
Crucially,
notably
shifted
beta‐diversity
community,
with
K‐strategy
fungi
fixation
subsequent
growth.
Cuttings
from
middle‐aged
forests
displayed
robust
those
young‐aged,
associated
a
varied
impact
on
fungi,
increasing
relative
abundance
Myriangiales
in
young
(76.37%)
Capnodiales
(42.37%),
which
improve
stability
health.
These
findings
highlight
effectiveness
over
promoting
provide
valuable
insights
for
sustainable
management
willow
plantations
at
stages
development.
Soil and Water Research,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 3, 2025
The
labile
fractions
of
organic
carbon
(OC),
which
are
a
reflection
the
properties
soil
and
its
use,
appear
to
be
suitable
parameters
for
their
use
as
indicators.
aim
this
study
was
determine
reliable
relatively
simple
indicators
detecting
chemical
physical
stabilizations
OC,
would
respond
sensitively
land
use.
includes
forest
ecosystem
(FE)
agroecosystem
(AE)
with
different
tillage
intensities
(reduced
tillage,
RT
conventional
CT)
on
real
farms.
Parameters
C
N
were
tested.
For
depth
<
0.1
m
in
FE,
hot
water
extractable
(HWEOC)
stabilization
nitrogen
(NL)
most
Higher
values
HWEOC
indicate
OC
by
decreasing
decomposition,
pH
or
increasing
carbonates,
recalcitrant
fractions,
higher
NL
incorporation
into
silt
fraction
larger
macro-aggregates.
In
AE
RT,
these
pool
index
(CPI)
lability
(LIC)
stabilization.
CPI
LIC
formation
size-optimal
dry-sieved
(DSA;
1–3
mm)
wet-sieved
(WSA;
1–2
aggregates.
CT,
it
NL.
Its
point
through
alkaline
cations,
size-fraction
>
0.01
mm
DSA
(1–3
mm).
0.3
AE,
CL
(for
RT),
value
points
clay
CT),
indicates
conditions
acidification.
