Agronomy,
Год журнала:
2024,
Номер
14(7), С. 1469 - 1469
Опубликована: Июль 7, 2024
This
study
investigates
the
impact
of
corn
straw
return
and
nitrogen
application
rates
on
ammonia
volatilization
yield
enhancement
under
field
conditions,
in
order
to
reduce
emissions
while
increasing
crop
yield.
During
winter
wheat
season,
a
fissure
area
design
was
implemented,
comprising
three
levels
main
distinct
fertilizer
subsidiary
area,
for
total
nine
treatments.
The
results
can
be
summarized
as
follows:
(1)
flux
initially
increased
followed
by
decrease,
primarily
concentrated
within
first
14
days
after
fertilization,
with
peak
observed
at
4–5
before
decreasing.
Notably,
significantly
affected
cumulative
emissions,
ranging
from
0.019
1.786
kg·hm−2·d−1
0.013
1.693
across
two
seasons.
(2)
soil
higher
rate
exhibited
elevated
inorganic
content
urease
activity
same
level.
Maintaining
consistent
level,
discharge,
content,
activity.
(3)
interaction
between
substantially
Specifically,
during
optimal
combination
reducing
enhancing
(both
half
or
full)
combined
180
kg·hm−2
application.
reduction
augmentation
were
feasible
through
appropriate
preceding
season.
Agricultural Water Management,
Год журнала:
2023,
Номер
283, С. 108308 - 108308
Опубликована: Апрель 25, 2023
The
Indo-Gangetic
Plains
(IGP)
in
north-west
(NW)
India
are
facing
a
severe
decline
ground
water
due
to
prevalent
rice-based
cropping
systems.
To
combat
this
issue,
conservation
agriculture
(CA)
with
an
alternative
crop/s,
such
as
maize,
is
being
promoted.
Recently,
surface
drip
fertigation
has
also
been
evaluated
viable
option
address
low-nutrient
use
efficiency
and
scarcity
problems
for
cereals.
While
the
individual
benefits
of
CA
sub-surface
(SSD)
irrigation
on
economy
well-established,
information
regarding
their
combined
effect
cereal-based
systems
lacking.
Therefore,
we
conducted
two-year
field
experiment
under
ongoing
CA-based
maize-wheat
system,
evaluate
complementarity
SSD
through
two
technological
interventions––
CA+
(residue
retained
+
SSD),
PCA+
(partial
without
residue
SSD)
–
at
different
N
rates
(0,
120
150
kg
ha-1)
comparison
traditional
furrow
irrigated
(FI)
conventional
tillage
(CT)
ha-1.
Our
results
showed
that
had
highest
grain
yield
(8.2
t
ha-1),
followed
by
(8.1
ha-1).
ha-1
was
27%
30%
higher
than
CT,
respectively.
Even
same
level
(120
outperformed
CT
16%
18%,
physiological
performance
maize
revealed
based
plots
12%
3%
photosynthesis
rate
knee-high
silking,
respectively
compared
FI-CA
CT.
Overall,
SSD-based
saved
54%
increased
productivity
(WP)
more
twice.
Similarly,
greater
number
split
application
agronomic
nitrogen
(NUE)
recover
8–19%
14–25%,
Net
returns
from
were
significantly
US$
491
456,
treatments.
coupled
provided
tangible
terms
yield,
saving,
WP,
NUE
profitability.
Efforts
should
be
directed
towards
increasing
farmers'
awareness
promising
technology
cultivating
food
grains
commercial
crops
maize.
Concurrently,
government
support
strict
policies
required
enhance
system
adaptability.
Scientific Reports,
Год журнала:
2023,
Номер
13(1)
Опубликована: Июль 26, 2023
A
3-year
field
experiment
was
setup
to
address
the
threat
of
underground
water
depletion
and
sustainability
agrifood
systems.
Subsurface
drip
irrigation
(SDI)
system
combined
with
nitrogen
management
under
conservation
agriculture-based
(CA)
maize-wheat
(MWS)
effects
on
crop
yields,
productivity
(WPi),
use
efficiency
(NUE)
profitability.
Grain
yields
maize,
wheat,
MWS
in
SDI
100%
recommended
N
were
significantly
higher
by
15.8%,
5.2%
11.2%,
respectively,
than
conventional
furrow/flood
(CT-FI)
system.
System
savings
(~
55%)
mean
WPi
CT-FI
There
saving
25%
fertilizer
maize
whereas
no
observed
wheat.
Net
returns
from
(USD
265)
(with
subsidy)
despite
cost
production.
The
net
increased
47%
when
considering
a
subsidy
80%
laying
Our
results
showed
great
potential
complementing
CA
maximize
productivity,
NUE,
WPi,
which
may
be
economically
beneficial
environmentally
sound
Trans-IGP
South
Asia.
Agricultural Water Management,
Год журнала:
2024,
Номер
294, С. 108726 - 108726
Опубликована: Фев. 16, 2024
The
North
China
Plain
(NCP)
is
a
remarkable
agricultural
area
with
severe
water
scarcity
and
uneven
precipitation,
especially
in
wheat
season.
Optimizing
irrigation
strategies
to
increase
productivity
(WP)
achieve
higher
yield
winter
wheat-summer
maize
rotation
urgently
needed
has
been
persistent
challenge.
A
four-year
field
experiment
was
conducted
explore
the
impact
of
on
WP
subsequent
under
different
precipitation
year
types
(dry
normal
years,
categorized
based
cumulative
from
sowing
jointing
stage
(P1)).
Four
(W0,
no
irrigation;
W1,
pre-sowing
W2,
+
W3,
anthesis
irrigation)
were
adopted
for
wheat,
identical
operations
applied
maize.
Results
showed
that
affected
by
P1
rather
than
total
precipitation.
Irrigation
improved
enhancing
evapotranspiration,
spike
number,
grain
1000-seed
weight.
water-limited
gap
between
W2
W1
significantly
those
W0,
W3
implying
suitable
strategy
production.
Different
season
had
effect
but
increased
13.2–29.3%
16.1–41.8%
compared
other
treatments
through
decreasing
soil
storage
before
dry
years.
Therefore,
we
recommended
annual
yield,
WP,
net
income
years
(37.6
mm
<
79.9
mm);
lower
consumption
economic
benefits
(P1
37.6
mm),
respectively.
Overall,
optimizing
conditions
an
effective
cope
resource
shortages
crop
NCP.
