Winter and Season-Only Irrigation with Late Summer Irrigation Termination Influences Alfalfa Dry Matter Yield and Applied Water Use Efficiency
Agriculture,
Journal Year:
2025,
Volume and Issue:
15(2), P. 146 - 146
Published: Jan. 10, 2025
Increasing
water
scarcity
for
agricultural
irrigation
demands
options
to
maximize
yield
with
available
water.
Alfalfa
(Medicago
sativa)
is
a
valuable
crop
in
arid
and
semiarid
regions
considered
major
user
of
Consequently,
an
area
established
alfalfa
was
center-pivot-irrigated
over
two
years
according
one
four
regimes,
each
three
replicates
as
strip
plots.
These
were
started
after
the
last
six
harvests
year,
seeding:
winter-irrigated
throughout
growing
season
(winter
full),
terminated
4th
harvest
limited),
irrigated
from
mid-April,
when
canal
typically
becomes
available,
remainder
(season
or
typically-irrigated
until
limited).
Annual
dry
matter
(DMY)
increased
using
winter
compared
season-only
(10.34,
8.94,
8.67,
6.54
Mg
ha−1
full,
limited,
respectively,
p
<
0.0001,
SEM
0.45).
Irrigation
termination
fourth
no
significantly
reduced
annual
applied
use
efficiency
(AAWUE)
all
other
treatments
(9.08,
8.59,
8.82,
7.38
kg
DMY
mm−1
respectively;
0.0098,
=
0.38).
Winter
fill
soil
profile,
followed
by
late
summer
termination,
feasible
increasing
productivity
irrigation.
Language: Английский
Water–Fertilizer Synergistic Effects and Resource Optimization for Alfalfa Production: A Central Composite Design and Response Surface Methodology Approach
G. H. Mu,
No information about this author
Yuanbo Jiang,
No information about this author
Haiyan Li
No information about this author
et al.
Plants,
Journal Year:
2025,
Volume and Issue:
14(5), P. 731 - 731
Published: Feb. 27, 2025
This
study
posits
that
strategically
optimizing
irrigation
and
fertilization
regimes
can
enhance
the
productivity
water
use
efficiency
(WUE)
of
alfalfa
(Medicago
sativa
L.),
thereby
mitigating
constraints
imposed
by
soil
impoverishment
scarcity
in
forage
production
systems
arid
semi-arid
regions.
Conducted
over
two
years,
outdoor
pot
experiment
investigated
effects
regulation
during
branching
bud
stages
(each
at
60–100%
θ0.85,
where
θ0.85
=
0.85θfc)
different
levels
nitrogen
phosphorus
(0–280
kg/ha
each)
on
yield
WUE.
Using
Response
Surface
Methodology
(RSM)
with
a
Central
Composite
Design
(CCD),
we
modeled
relationships
between
input
variables
key
response
parameters:
total
yield,
evapotranspiration
(ET),
The
surface
models
exhibited
high
reliability,
coefficients
determination
R2,
adjusted
predicted
adequate
precision
exceeding
0.94,
0.90,
0.86,
13.6,
respectively.
Sensitivity
analysis
indicated
critical
growth
stages,
particularly
stage,
had
most
significant
impact
ET,
while
positively
influenced
Within
appropriate
range
management,
judicious
significantly
enhanced
performance,
although
excessive
inputs
resulted
diminishing
returns.
identified
optimal
conditions
for
sustainable
production:
stage
(82.26–83.12%
θ0.85)
(78.11–88.47%
θ0.85),
along
application
(110.59–128.88
kg/ha)
(203.86–210
kg/ha).
These
findings
provide
practical
guidelines
improving
sustainability
resource-limited
environments.
Language: Английский
Regulation of alfalfa growth, water and nitrogen utilization and distribution in arid region of Northwest China by optimizing irrigation method
Hongxiu Ma,
No information about this author
Peng Jiang,
No information about this author
Xiaojuan Zhang
No information about this author
et al.
Frontiers in Plant Science,
Journal Year:
2025,
Volume and Issue:
16
Published: March 12, 2025
The
water
and
nitrogen
use
efficiency
of
alfalfa
is
very
low
in
the
arid
region
Northwest
China
currently.
In
this
field
experiments
2022
2023,
effects
traditional
flood
irrigation
(FI-12,
1200
mm;
FI-8,
880
mm),
sprinkler
(SI-8,
SI-5,
520
subsurface
drip
(DI-5,
DI-8,
mm))
on
yield,
(WUE),
(NUE)
were
studied.
results
showed
that
DI
SI
treatments,
especially
DI-5,
increased
seed
yield
by
increasing
number
inflorescences
pods
compared
with
FI
treatments.
DI,
reduced
loss
during
first
two
crops
each
growing
season
improving
WUE.
treatments
had
lowest
root/shoot
ratio
(R/S),
which
facilitated
distribution
photosynthetic
products
to
reproductive
organs
inhibited
overgrowth
root
system.
small
R/S
late
growth
stage
DI-5
treatment
also
helped
achieve
high
Besides,
largest
length
density,
promoted
uptake
utilization
alfalfa.
accumulation
plants,
soil
nitrate
(NO
3
−
-N)
leaching
NH
volatilization
at
maturity
NUE.
summary,
fertigation,
coordinated
vegetative
growth,
loss,
leaching,
volatilization,
WUE,
NUE
This
study
will
advance
understanding
mechanism
regulating
use,
provide
a
scientific
basis
for
application
fertigation
semi-arid
areas.
Language: Английский
Deficit Irrigation Provides a Trade-Off Between Water Use and Alfalfa Quality
Yadong Wang,
No information about this author
Q L Zhang,
No information about this author
Kai Gao
No information about this author
et al.
Agronomy,
Journal Year:
2025,
Volume and Issue:
15(4), P. 932 - 932
Published: April 11, 2025
Currently,
the
world
is
facing
a
serious
agricultural
water
crisis,
which
also
affects
grassland
areas.
Alfalfa,
key
perennial
forage
legume,
consumes
about
10%
of
China’s
pastoral
irrigation
water.
Reducing
generally
results
in
loss
hay
yield,
but
effects
on
alfalfa
quality
and
its
relationship
to
use
are
less
clear.
In
this
study,
we
explore
under
different
deficits
Hexi
Corridor
China.
Alfalfa
use,
yield
(relative
feeding
value
(RFVyield)
crude
protein
(CPyield)),
efficiency
(WUERFV)
(WUECP))
were
measured
field
experiment.
showed
negative
correlation
with
quota
(the
determination
coefficient
for
relative
was
0.375
0.289).
There
positive
between
RFVyield
0.570
CPyield
0.631).
The
higher
increased
compensated
quality.
mild
moderate
deficit
treatments
lower
WUERFV
than
both
severe
no
treatments.
Moderate
or
recommended
be
used
one-year-old
treatment.
No
beneficial
improve
two-year-old
alfalfa.
Language: Английский
A Comprehensive Review of Irrigation Practices and Challenges in Bangladesh: Pathways to Sustainable Agricultural Productivity
Ping Fang,
No information about this author
Rajendra Prashad,
No information about this author
P. J. Prajapati
No information about this author
et al.
European Journal of Theoretical and Applied Sciences,
Journal Year:
2024,
Volume and Issue:
2(5), P. 834 - 861
Published: Sept. 1, 2024
Crop
water
is
a
critical
input
in
any
farming
systems
across
the
globe,
especially
developing
countries
South
Asia
where
appropriate
management
remains
major
challenge
such
as
case
of
Bangladesh.
This
review
also
aimed
at
describing
changes
status
and
perspective
irrigation
shift
resource
base
from
surface
to
groundwater
early
1980s
paved
way
ensure
food
self-sufficiency,
feat
country
accomplished
1990s.
But
with
increased
use
sources
there
have
been
some
questions
on
sustainability
this
source,
has
seen
back
better
techniques
practices
like
micro-irrigation,
drips
auto
irrigation.
paper
aims
global
irrigation,
practicing
contrast
between
gravity
irrigators
pressurized
irrigators,
besides
focusing
opportunities
risks
drip
arid
zones.
It
reviews
issues
confronted
by
Bangladesh
climate
change,
sector
problem,
saving
system.
The
discoveries
advise
that
smart
technologies
should
be
included
for
efficiency
so
productivity
not
checked
coming
future.
With
regards
this,
it
hope
pinpoint
areas
enhanced
support
policy
practice
enhancement
resources
well
meeting
needs
agricultural
Language: Английский