Effect of Combined Urea and Calcium Nitrate Application on Wheat Tiller Development, Nitrogen Use Efficiency, and Grain Yield
Chao Wang,
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Haixing Cui,
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Min Jin
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et al.
Plants,
Journal Year:
2025,
Volume and Issue:
14(2), P. 277 - 277
Published: Jan. 18, 2025
Optimizing
nitrogen
(N)
sources
has
the
potential
to
improve
wheat
tillering,
use
efficiency
(NUE),
and
grain
yield,
yet
underlying
mechanisms
remain
unclear.
This
study
hypothesizes
that
combining
specific
N
can
increase
zeatin
riboside
+
(ZR
ZT)
content
in
tiller
nodes
maintain
a
higher
ZR
ZT/gibberellin
A7
(GA7)
ratio,
thereby
promoting
development,
enhancing
NUE,
increasing
yield.
The
effects
of
source
treatments
on
two
cultivars,
multi-spike
Shannong
28
(SN28)
large-spike
Tainong
18
(TN18),
were
investigated.
A
total
seven
tested:
no
(N0),
urea
(N1),
calcium
nitrate
(N2),
ammonium
chloride
(N3),
equal
doses
(N4),
(N5),
(N6).
results
showed
treatment
N4
significantly
increased
levels
ZT
nodes,
while
maintaining
GA7
ratio.
hormonal
shift
promoted
formation
biomass
accumulation.
Under
N4,
both
cultivars
exhibited
highest
number
effective
spikes
higher-order
tillers.
also
enhanced
accumulation
grains,
absorption
efficiency,
translocation,
reducing
loss.
Compared
N1,
spike
numbers
by
7.8%
SN28
5.6%
TN18,
resulting
6.4%
yield
for
2.2%
TN18.
In
conclusion,
combined
application
optimizes
regulation,
improves
enhances
tillering
providing
promising
strategy
productivity.
Language: Английский
Optimized Agronomic Management in North China Plain to Maintain Wheat (Triticum aestivum L.) Yield While Reducing Water and Fertilizer Inputs
Jiabin Ma,
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Chong Shang,
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Xuecheng Zhang
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et al.
Agronomy,
Journal Year:
2025,
Volume and Issue:
15(5), P. 1053 - 1053
Published: April 27, 2025
Optimizing
farmers’
crop
production
management
is
an
effective
strategy
to
synergize
yields,
resource
utilization,
and
environmental
conservation.
However,
the
mechanisms
by
which
agronomic
in
North
China
Plain
(NCP)
determines
wheat
yield,
water
use
efficiency
(WUE),
physiological
performance
remain
largely
unexplored.
To
address
this
knowledge
gap,
a
field
experiment
was
conducted
from
2022
2024
investigate
effects
of
conventional
farmer
practices
(CK)
Integrated
High-Yield
Efficiency
Cultivation
Management
(HHL)
incorporating
pre-sowing
soil
moisture
creation,
optimized
tillage,
fertilization,
irrigation
on
consumption
characteristics,
leaf
photosynthetic
physiology,
root
traits.
The
results
demonstrated
that
HHL
significantly
enhanced
morphology
winter
compared
CK.
Specifically,
increased
net
rate
(Pn),
chlorophyll
content,
area
index
(LAI)
at
flowering
stage
20.5%,
8.8%,
11.1%,
respectively,
thereby
boosting
dry
matter
accumulation
40.3%
yields
10.9%.
Furthermore,
reduced
evaporation
12.1%
total
112.1
mm,
while
improving
WUE
25.4%
nitrogen
fertilizer
partial
productivity
38.7%,
alongside
12.5%
increase
economic
benefits.
Through
rigorous
experimentation,
study
elucidates
potential
conservation,
yield
enhancement,
comprehensive
benefit
improvement,
offering
cultivation
paradigm
for
systems
NCP.
findings
indicate
exhibits
superior
water-saving
yield-enhancing
effects,
with
promising
prospects
widespread
adoption
application.
Language: Английский