Research Square (Research Square),
Год журнала:
2022,
Номер
unknown
Опубликована: Дек. 13, 2022
Abstract
Deep
fertilization
has
been
tested
widely
for
nitrogen
(N)
use
efficiency
but
there
is
little
evidence
of
its
impact
on
N
leaching
and
the
interplay
between
climate
factors
crop
use.
In
this
study,
we
effect
three
fertilizer
placements
greenhouse
gas
(GHG)
emissions,
leaching,
growth
in
a
lysimeter
experiment
over
33-month
period
comprised
years
with
spring-sown
cereals
(S1,
S2,
S3)
preceding
11-month
(F1)
subsequent
15-month
(F2)
fallow
period.
addition
to
control
no
(Control),
100
kg
ha
−
1
year
ammonium
nitrate
was
placed
at
0.2
m
(Deep),
0.07
(Shallow),
or
halved
(Mixed).
reduced
leachate
amount
each
except
F1,
significant
reductions
(p
<
0.05)
drought
(S2)
cumulatively
S1-S3.
Overall,
water
flow
by
22,
25
34%
compared
Shallow,
Mixed
Control,
respectively.
across
S1-S3
further
loads
15%
significantly
lowest
among
fertilized
treatments
S1
S2.
S3,
increased
grain
yields
28
22%
Shallow
Mixed,
respectively,
while
maintaining
high
content
nearly
doubling
agronomic
(AE
)
recovery
(RE
).
placement
promising
mitigation
practice
that
should
be
investigated.
Agronomy,
Год журнала:
2025,
Номер
15(5), С. 1103 - 1103
Опубликована: Апрель 30, 2025
It
is
unclear
whether
enhanced
efficiency
fertilizer
(EEF)
or
deep
fertilization
strategies
(DF)
can
simultaneously
improve
crop
productivity
and
reduce
gaseous
nitrogen
losses.
The
DF
strategy’s
investment
cost
lower
than
that
of
EEF’s,
with
more
potential
for
large-scale
promotion.
However,
there
still
a
need
comprehensive
comparison
evaluation
EEF’s
effects
on
Here,
we
examine
the
EEF
yield,
use
(NUE),
nitrous
oxide
(N2O)
ammonia
(NH3)
emissions
by
meta-analysis
published
studies.
We
collected
peer-reviewed
articles
in
recent
decades
conducted
global
meta-analysis,
explored
their
responses
to
different
climatic,
field
management
practices,
environmental
factors.
results
showed
compared
urea
application
surface,
significantly
increased
yields
7.52%
13.88%
NUE
25.84%
36.27%
reduced
N2O
37.98%
34.18%
NH3
42.37%
69.68%,
respectively.
strategy
superior
EEF.
Due
differences
climatic
factors,
soil
properties,
improving
loss
vary.
most
cases,
beneficial
Compared
EEF,
yield
84.63%
volatilization
64.47%,
yield-scaled
emission
13.32%,
60.23%.
Therefore,
emphasize
achieve
higher
yields,
utilization
efficiency,
nitrogen,
which
sustainable
development
agricultural
ecosystems.
research
provide
valuable
information
costs
under
an
effective
type
management.
Frontiers in Plant Science,
Год журнала:
2024,
Номер
15
Опубликована: Авг. 14, 2024
Introduction
The
depth
of
fertilizer
application
significantly
influences
soil
nitrate
concentration
(SNC),
sunflower
root
length
density
(RLD),
nitrogen
uptake
(SNU),
and
yield.
However,
current
studies
cannot
precisely
capture
subtle
nutrient
variations
between
layers
their
complex
relationships
with
growth.
They
also
struggle
to
assess
the
impact
different
depths
on
development
distribution
as
well
response
spatial
temporal
nutrients.
Methods
Agricultural
Production
Systems
sIMulator
(APSIM)
model
was
employed
explore
patterns
in
at
three
controlled-release
(CRF)
placement
depths:
5,
15,
25
cm.
This
study
investigated
characteristics
system
regarding
absorption
utilization
analyzed
correlation
yield
formation.
Furthermore,
this
introduced
modified
Jaccard
index
(considering
compatibility
density)
analyze
soil-root
interactions,
providing
a
deeper
insight
into
how
changes
CRF
affect
crop
growth
efficiency.
Results
results
indicated
that
fertilization
15
cm
improved
by
6.60%
7.34%
compared
5
depths,
respectively,
maximizing
(an
increase
9.44%)
rate
5.40%).
promoted
greater
Root
Length
Density
an
increases
11.95%
16.42%
those
cm,
enhancing
improving
uptake.
In
contrast,
shallow
led
higher
concentrations
topsoil,
whereas
increased
layers.
Discussion
These
provide
valuable
insights
for
precision
agriculture
sustainable
management,
highlighting
importance
optimizing
through
tailored
strategies
enhance
production
efficiency
minimize
environmental
impact.
Communications in Soil Science and Plant Analysis,
Год журнала:
2024,
Номер
unknown, С. 1 - 16
Опубликована: Дек. 10, 2024
Excessive
and
inappropriate
nitrogen
(N)
fertilizer
applications
on
calcareous
soils
result
in
significant
losses,
necessitating
a
targeted
approach
for
improved
efficiency
yield.
Field
experiments
were
conducted
over
two
seasons
to
develop
strategy
root-zone
(RZ)
N
fertilization
wheat.
In
the
first
season,
three
methods
of
application
used:
surface
(SF),
RZ
at
depth
10
cm
(RZF10),
20
(RZF20).
The
was
applied
range
0–280
kg
ha−1.
second
another
experiment
carried
out
validate
results.
data
showed
that
achieve
maximum
yield
levels,
rates
264
ha−1
SF,
218
RZF10,
183
RZF20
required.
findings
also
revealed
relocating
from
depths
resulted
an
increase
recovery
by
11.2%
31.2%,
respectively.
A
linear
equation
established
relationship
between
response
index
harvest
(RI-Harvest)
corrective
rate
RZF20.
in-season
normalized
difference
vegetation
effectively
predicted
RI-Harvest,
leading
development
empirical
predict
rate.
validation
demonstrated
effectiveness
proposed
adjusting
based
crop-specific
needs.
This
allows
growers
optimize
profits
carefully
applying
RZ,
eliminating
both
excessive
inadequate
use.
Research Square (Research Square),
Год журнала:
2022,
Номер
unknown
Опубликована: Дек. 13, 2022
Abstract
Deep
fertilization
has
been
tested
widely
for
nitrogen
(N)
use
efficiency
but
there
is
little
evidence
of
its
impact
on
N
leaching
and
the
interplay
between
climate
factors
crop
use.
In
this
study,
we
effect
three
fertilizer
placements
greenhouse
gas
(GHG)
emissions,
leaching,
growth
in
a
lysimeter
experiment
over
33-month
period
comprised
years
with
spring-sown
cereals
(S1,
S2,
S3)
preceding
11-month
(F1)
subsequent
15-month
(F2)
fallow
period.
addition
to
control
no
(Control),
100
kg
ha
−
1
year
ammonium
nitrate
was
placed
at
0.2
m
(Deep),
0.07
(Shallow),
or
halved
(Mixed).
reduced
leachate
amount
each
except
F1,
significant
reductions
(p
<
0.05)
drought
(S2)
cumulatively
S1-S3.
Overall,
water
flow
by
22,
25
34%
compared
Shallow,
Mixed
Control,
respectively.
across
S1-S3
further
loads
15%
significantly
lowest
among
fertilized
treatments
S1
S2.
S3,
increased
grain
yields
28
22%
Shallow
Mixed,
respectively,
while
maintaining
high
content
nearly
doubling
agronomic
(AE
)
recovery
(RE
).
placement
promising
mitigation
practice
that
should
be
investigated.
