Research Square (Research Square),
Год журнала:
2023,
Номер
unknown
Опубликована: Окт. 13, 2023
Abstract
Potassium
(K)
has
received
less
attention
than
nitrogen
(N)
and
phosphorous
(P)
as
a
potential
yield-limiting
factor
in
cropping
systems.
Here
we
investigated
the
current
K
limitation
intensive
cereal
systems
of
Southeast
Asia
based
on
nutrient
balances,
leaf
status,
long-
short-term
fertilizer
trials,
farmer
surveys.
We
found
that
soil
alone
cannot
meet
plant
requirements
application
is
insufficient
to
avoid
deficiencies
large
negative
balances
fields.
Removing
requires
improved
capacity
predict
response
together
with
long-term,
flexible
crop
straw
management
strategies.
It
likely
similar
limitations
have
emerged
other
world
regions
result
decades
replenishment
potassium,
which
represent
headwinds
closing
yield
gaps
existing
farmland.
Agricultural Systems,
Год журнала:
2023,
Номер
210, С. 103689 - 103689
Опубликована: Июнь 2, 2023
Palm
oil
production
is
a
major
source
of
income
for
millions
smallholders
in
Indonesia.
However,
actual
yield
remains
low
relation
to
the
attainable
yield.
While
emphasis
has
been
given
planting
material
as
factor
explaining
smallholder
fields,
role
agronomic
management
received
less
attention.
We
assessed
palm
productivity
independent
fields
quantified
gaps
and
their
causes
using
data
on
fresh
fruit
bunch
(FFB)
practices
collected
over
two
years
across
977
fields.
The
gap
was
estimated
each
field
difference
between
latter
crop
model,
local
weather
field-specific
soil
age.
Statistical
techniques
were
used
identify
factors
gaps.
Average
represented
42%
yield,
with
largest
occurring
young
plantations.
Our
analyses
identified
gaps,
including
nutrient
management,
harvest
interval,
weed
control,
pruning.
Improved
can
help
increase
profit
existing
There
an
opportunity
produce
more
current
plantation
area
via
better
agronomy,
generating
positive
economic
impact
at
national
levels,
while
reducing
pressure
clear
new
land
cultivation.
Research
&
extension
programs
should
be
re-oriented
give
management.
Agricultural Systems,
Год журнала:
2023,
Номер
210, С. 103729 - 103729
Опубликована: Июль 27, 2023
Smallholders
account
for
ca.
40%
of
oil
palm
area
in
Indonesia
but
average
yield
remains
low.
Despite
higher
overall
fertilizer
use
compared
with
other
Southeast
Asian
countries,
poor
plant
nutrition
has
been
identified
as
a
major
factor
explaining
gaps
smallholder
fields
and
little
is
known
about
the
underlying
management
drivers.
To
assess
nutrient
identify
entry
points
to
narrow
existing
gap
via
improved
nutrition.
We
assessed
balances
nitrogen
(N),
phosphorous
(P),
potassium
(K),
magnesium
(Mg)
inter-relationships
between
use,
leaf
concentration,
yield,
using
data
collected
from
977
over
two
years.
There
was
positive
relationship
rates,
especially
(K).
Only
half
received
rates
fertilized
represented
45%
83%
28%
25%
associated
removal
harvested
yield.
Applied
generally
rich
N
P,
K
Mg,
leading
imbalances.
Additionally,
farmers
did
not
follow
appropriate
practices
on
placement
splits.
Improving
current
supply
needed
increase
yields
profit.
Current
agricultural
research
programs
will
benefit
re-orienting
efforts
improve
pathway
fields,
which,
turn,
requires
strengthening
extension
services
fill
knowledge
tune
subsidy
facilitate
farmer
access
sources
more
suited
crop.
Agricultural Systems,
Год журнала:
2023,
Номер
211, С. 103753 - 103753
Опубликована: Авг. 30, 2023
Smallholders
are
responsible
for
a
large
share
of
global
palm
oil
production.
Yet,
in
Indonesia,
the
main
producing
country,
smallholders'
yields
remain
low.
Better
management
practices,
including
short
harvest
interval
(HI,
number
days
between
two
rounds),
could
help
to
raise
smallholder
yields.
However,
at
present,
HI
is
long
fields
and
drivers
underlying
this
phenomenon
poorly
understood.
We
explored
agronomic,
socio-economic,
institutional
factors
that
underlie
harvesting
practices
independent
farming
systems
Indonesia
assess
scope
sustainable
intensification
through
shorter
reduced
losses.
Combining
methods
from
agronomy
anthropology,
we
followed
950
farmers
six
representative
locations
across
via
farmer
diaries
over
period
years
establish
correlation
with
yield.
To
quantify
relationship,
conducted
post-harvest
field
measurements,
explain
which
impact
did
qualitative
interviews
surveys.
The
smallholders
our
study
ranged
10
39
(average:
17-d).
Half
(>16-d).
Key
impacting
include
annual
fresh
fruit
bunch
(FFB)
yield,
total
area
per
farmer,
trusted
labor
availability,
plantation
accessibility,
FFB
price.
Farmers
responded
low
yield
by
prolonging
increase
productivity
optimize
transportation
costs.
This
contributes
better
understanding
relation
systems,
uncovering
how
socio-economic
sometimes
override
agronomic
considerations.
Long
can
potentially
lead
loss
loose
fruits
missed
bunches,
reduce
quality
overripe
bunches.
obtain
benefits
requires
collective
action
incentives
along
supply
chain
streamline
sale
process.
IOP Conference Series Earth and Environmental Science,
Год журнала:
2024,
Номер
1302(1), С. 012150 - 012150
Опубликована: Фев. 1, 2024
Abstract
The
sustainability
of
oil
palm
plantations
is
particular
concern
from
government.
One
the
problems
that
has
not
yet
been
realized
target
replanting
smallholder
plantations.
There
are
two
systems
namely
conventional
and
underplanting
system.
Some
farmers
do
because
it
prevents
losing
their
major
source
revenue
if
they
have
in
more
than
2ha.
Smallholder
producers
Sungai
Bahar
District
with
sampling
approach
employs
simple
random
44
sample
42
underplanting.
According
to
research
findings,
system
farmers’
income
higher
difference
comparison
20.7%.
Farming
using
IDR
22,323,490/ha/year,
while
12,519,214/ha/year.
seen
at
production
levels
Besides
that,
application
Good
Agriculture
Practice
also
affects
condition
Fruit
Fresh
Bunches
produced,
including
use
appropriate
fertilizer.
Oil
farming
reached
account
minimum
wage
(UMK)
level,
even
above
applicable
UMK
taking
into
for
district
Muaro
Jambi
2023
2,900,000
per
month
both
two-system
replanting.
Journal of Oil Palm Research,
Год журнала:
2024,
Номер
unknown
Опубликована: Май 21, 2024
The
primary
objective
for
many
oil
palm
growers
has
been
to
enhance
crop
yield,
which
can
be
achieved
through
the
cultivation
of
more
productive
varieties.Therefore,
there
is
a
need
study
new
planting
materials
find
optimum
density
in
plantations.Oil
growth
and
yield
performance
two
(PS1
DxP)
were
determined
using
four
densities
three
nitrogen
fertiliser
rates.The
analysis
variance
fresh
fruit
bunch
(FFB)
its
components
over
seventeen
years
recording
show
no
significant
interaction
between
density,
progeny
lineage
(N).The
N
had
effect
on
FFB
where
N1
rate
was
difference
average
by
0.89
t
ha
-1
as
compared
control.However,
higher
(N2)
did
not
significantly
increase
since
only
0.09
.The
standard
produces
maximum
cumulative
yields
harvesting.Vegetative
shows
that
increased
rachis
length,
frond
height,
leaf
area
index.PS1
exhibited
shorter
length
measuring
3.08%
less
at
6.18
m,
comparison
DxP
measured
6.33
m.Over
17
harvesting,
140
palms
yielded
highest
amounting
426.96
24.19
yr
respectively.However,
it
different
160
,
cumulatively
425.68
24.12
practice
continues
preferred
agronomic
density.
