Unraveling mechanisms of N₂O emissions and nitrogen cycling: The role of biochar C:N ratios in loamy and sandy soils
Applied Soil Ecology,
Journal Year:
2025,
Volume and Issue:
207, P. 105950 - 105950
Published: Feb. 11, 2025
Language: Английский
Effect of water-saving technologies on nitrogen losses in rice fields: A meta-analysis
Agricultural Water Management,
Journal Year:
2025,
Volume and Issue:
312, P. 109400 - 109400
Published: March 6, 2025
Language: Английский
The Evolution of Global Surface Ammonia Concentrations during 2001–2019: Magnitudes, Patterns, and Drivers
Environmental Science & Technology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 10, 2025
Ammonia
(NH3)
is
the
most
prevalent
alkaline
gas
in
atmosphere,
with
its
elevated
concentrations
posing
significant
adverse
impacts
on
air
quality,
ecosystems,
and
human
health
across
diverse
spatial
temporal
scales.
Given
ongoing
global
change
intensified
anthropogenic
NH3
emissions,
it
projected
that
surface
concentration
will
escalate
further.
Here,
based
ground
observations,
gridded
data
of
organic
inorganic
nitrogen
fertilizer
applications,
meteorological
data,
ancillary
information,
we
estimated
changes
monthly
during
2001–2019
at
a
0.1°×
0.1°
resolution.
A
novel
scale-adaptive
approach,
essentially
an
Ensemble
Random
Forest
Model
built
upon
Rotated
Quadtree
Partitioning
Box-Cox
Transformation,
was
developed.
The
model
well
reproduced
patterns
particularly
capturing
peak
valley
values
(R2
=
0.91
slope
0.82
for
whole;
R2
0.79
0.70
testing).
results
indicate
increase
over
2001–2019,
from
1.44
μg
m–3
yr–1
2001
to
1.51
2019.
Notably,
hotspots
were
located
northern
South
Asia,
China,
Sahel
area,
southeast
America,
central
United
States.
Decreased
SO2
emissions
increased
applications
dominated
while
primarily
driven
by
inputs.
Temperature
identified
play
important
role
affecting
regions,
Africa,
Oceania.
These
findings
have
potential
facilitate
research
cycle
environmental
footprints
inform
development
locally
or
regionally
tailored
management
strategies.
Furthermore,
proposed
modeling
algorithm
showcases
capability
intricate
relationships
within
highly
spatially
heterogeneous
thereby
addressing
up-scaling
challenges
associated
multimodal
site
observations.
Language: Английский
Effects of Catch Crops Cultivated for Green Manure on Soil C and N Content and Associated Enzyme Activities
Agriculture,
Journal Year:
2024,
Volume and Issue:
14(6), P. 898 - 898
Published: June 6, 2024
The
influence
of
catch
crop
(field
pea)
management
and
the
time
its
application
[plots
with
autumn
(A.I.)
or
spring
(S.I.)
biomass
incorporation
vs.
treatments
without
(C)
use]
on
activity
five
soil
enzymes
associated
C-
(CMC-cellulase—CEL,
β-glucosidase—βG,
invertase—INV)
N-cycling
(urease—UR,
nitrate
reductase—NR),
content
mineral
N,
microbial
C
N
(MBC,
MBN)
were
evaluated
in
a
3-year
experiment
(2009–2011).
Field
pea
was
sown
first
half
August
incorporated
into
second
October
2008,
2009,
2010
left
as
mulch
during
winter
mixed
spring.
enzymatic
properties
determined
samples
collected
from
barley
experimental
plots
four
times
year
(2009,
2010,
2011):
March
(before
sowing
barley),
May
(during
tillering
phase),
June
shooting
(after
harvesting).
Neither
nor
sampling
date
had
any
effect
total
organic
carbon
(CORG)
nitrogen
(Nt).
filed
significantly
enhanced
(up
to
30%),
well
variables,
compared
control
soil.
use
field
increased
(2009
2011)
contrast
incorporation.
On
other
hand,
biomass-N
studied
did
not
reveal
statistically
significant
changes
(or
results
inconsistent)
regards
assessed
variables
(except
for
CORG,
Nt,
N)
showed
seasonal
variability,
but
clear
specific
property.
However,
we
found
one
similarity;
majority
highest
and/or
June.
Our
data
confirmed
that
crops
play
key
function
agroecosystems.
Plant
is
source
matter,
which
increases
nutrient
concentrations
enhances
biological
activity.
Because
consistent
properties,
both
applications
can
be
recommended
suitable
practice
modern
agriculture.
Language: Английский
Distribution Patterns and Ecological Risks of Microplastics at Major Waste Disposal Environments in Dhaka, Bangladesh
Water Air & Soil Pollution,
Journal Year:
2024,
Volume and Issue:
236(1)
Published: Dec. 4, 2024
Language: Английский
Growing Indica and Aus Type Rice till Maturity in Hydroponics under N-Optimum and N-Stressed Condition: A Detailed Account
Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 16, 2024
Abstract
The
optimal
utilization
of
nitrogenous
fertilizer
in
agriculture
is
essential
for
reducing
nitrogen
(N)
induced
pollution
and
minimizing
production
costs.
While
studies
have
been
conducted
on
the
performance
rice
genotypes
under
N-stresses,
there
remains
a
lack
detailed
protocols
screening
them
during
both
seedling
maturity
stages
without
absolute
control
N,
which
conveniently
possible
hydroponics.
Here
we
report
protocol
growing
plants
till
N-stress
(as
well
as
N-optimum
condition)
hydroponics
system.
This
provides
comprehensive
details
requirements,
experimental
setup,
media,
conditions,
parameters
to
be
observed,
management
practices
system
troubleshooting.
Apart
from
condition,
also
detail
procedures
recording
observations
growth
phase
plants.
Two
contrasting
use
efficiency
(NUE),
IR64
(
Indica
rice)
Nagina
22
(
Aus
type
rice),
were
grown
optimum
N-stressed
condition
complete
validation
this
protocol.
Significant
differences
(p
<
0.05)
between
two
observed
various
including
morphological
N
uptake,
stages.
We
effect
aeration
found
that
non-aerated
conditions
preferable.
offers
an
efficient,
easy,
low-cost,
low-maintenance
hydroponic
stress
enabling
precise
phenotyping
non-destructive
examination
roots.
Language: Английский
Combined use of NBPT and micronutrients in granulated or coated urea: A new approach to reduce ammonia volatilization losses from soil
Soil Use and Management,
Journal Year:
2024,
Volume and Issue:
40(4)
Published: Oct. 1, 2024
Abstract
N‐
(
n
‐Butyl)
thiophosphoric
triamide
(NBPT)
is
the
most
widely
adopted
urease
inhibitor,
used
to
reduce
ammonia
(NH
3
)
volatilization
from
urea.
Micronutrients
such
as
boron
(B),
zinc
(Zn),
nickel
(Ni)
and
molybdenum
(Mo)
are
also
reported
inhibit
urease,
serving
simultaneously
plant
nutrients.
However,
there
little
information
on
potential
synergistic
or
antagonistic
effects
of
NBPT
micronutrients
urea
protection.
The
aim
this
study
was
evaluate
NH
losses,
soil
pH
mineral
nitrogen
content
(‐N
‐N)
after
application
coated
granulated
with
B,
Zn,
Ni
Mo,
individually.
Thereafter,
fertilizers
were
applied
combined
not
associated
NBPT.
Ammonia
measured
in
a
closed
static
chamber
under
controlled
conditions.
Urea
B
Zn
reduced
‐N
circa
30%
compared
untreated
urea,
while
Mo
had
no
effect.
stabilizer
greatest
effect
(44%–59%
reduction),
but
less
effective
(only
20%–34%
reduction)
when
Mo.
On
other
hand,
incorporated
via
granulation,
efficiency
reduced,
likely
because
physical
separation.
These
findings
demonstrate
that
granulating
an
NBPT‐coating
can
be
valuable
strategy
losses
supplying
hence
potentially
increase
yields
agricultural
production
systems.
Language: Английский