Biochar,
Journal Year:
2025,
Volume and Issue:
7(1)
Published: Jan. 16, 2025
Abstract
Phosphorus
(P)
is
essential
for
basic
natural
processes
and
can
limit
the
productivity
of
entire
ecosystems.
However,
agricultural
lands
worldwide
currently
suffer
from
P
deficiency.
The
application
fertilizers
not
only
poorly
utilized,
but
also
results
in
gradual
accumulation
P.
Biochar,
a
substance
produced
by
pyrolysis
biomass
under
low
oxygen
levels,
frequently
used
as
soil
amendment.
It
provides
form
that
readily
available
plant
uptake,
thus
addresses
both
short-
long-term
deficiencies.
In
this
paper,
we
systematically
reviewed
relevant
studies
on
“biochar
soil”
or
P”
published
past
decade
(2013–2023).
A
synthesis
reported
revealed
analyzing
effect
biochar
through
changes
physicochemical
properties
microbial
communities
has
gradually
emerged
prominent
area
research
recent
years.
purpose
study
was
to
analyze
differential
effects
addition
availability,
including
clarification
underlying
mechanisms.
showed
although
generally
exerts
positive
there
are
differences
extent
based
conditions.
Shifting
mechanisms,
directly
increases
phosphorus
(AP)
content
soil,
indirectly
influences
availability
via
physical,
chemical,
biological
properties.
To
summarize,
affect
different
degrees
direct
indirect
pathways.
Graphical
GCB Bioenergy,
Journal Year:
2021,
Volume and Issue:
13(11), P. 1731 - 1764
Published: July 27, 2021
Abstract
We
synthesized
20
years
of
research
to
explain
the
interrelated
processes
that
determine
soil
and
plant
responses
biochar.
The
properties
biochar
its
effects
within
agricultural
ecosystems
largely
depend
on
feedstock
pyrolysis
conditions.
describe
three
stages
reactions
in
soil:
dissolution
(1–3
weeks);
reactive
surface
development
(1–6
months);
aging
(beyond
6
months).
As
ages,
it
is
incorporated
into
aggregates,
protecting
carbon
promoting
stabilization
rhizodeposits
microbial
products.
Biochar
persists
for
hundreds
thousands
years.
By
increasing
pH,
porosity,
water
availability,
biochars
can
create
favorable
conditions
root
functions.
Biochars
catalyze
biotic
abiotic
reactions,
particularly
rhizosphere,
increase
nutrient
supply
uptake
by
plants,
reduce
phytotoxins,
stimulate
development,
resilience
disease
environmental
stressors.
Meta‐analyses
found
that,
average,
P
availability
a
factor
4.6;
decrease
tissue
concentration
heavy
metals
17%–39%;
build
organic
through
negative
priming
3.8%
(range
−21%
+20%);
non‐CO
2
greenhouse
gas
emissions
from
12%–50%.
show
average
crop
yield
increases
10%–42%
with
addition,
greatest
low‐nutrient
P‐sorbing
acidic
soils
(common
tropics),
sandy
drylands
due
retention
holding
capacity.
Studies
report
wide
range
diversity
contexts
which
have
been
applied.
Crop
yields
strongly
if
site‐specific
constraints
limitations
are
mitigated
appropriate
formulations.
be
tailored
address
site
selection,
modifying
conditions,
pre‐
or
post‐production
treatments,
co‐application
mineral
fertilizers.
demonstrate
how,
when
used
wisely,
mitigates
climate
change
supports
food
security
circular
economy.
GCB Bioenergy,
Journal Year:
2021,
Volume and Issue:
13(11), P. 1708 - 1730
Published: Sept. 1, 2021
Abstract
Biochar
is
obtained
by
pyrolyzing
biomass
and
is,
definition,
applied
in
a
way
that
avoids
its
rapid
oxidation
to
CO
2
.
Its
use
agriculture
includes
animal
feeding,
manure
treatment
(e.g.
as
additive
for
bedding,
composting,
storage
or
anaerobic
digestion),
fertilizer
component
direct
soil
application.
Because
the
feedstock
carbon
photosynthetically
fixed
from
atmosphere,
producing
applying
biochar
essentially
dioxide
removal
(CDR)
technology,
which
has
high‐technology
readiness
level.
However,
swift
implementation
of
pyrogenic
capture
(PyCCS),
needs
deliver
co‐benefits,
example,
improving
crop
yields
ecosystem
services
and/or
climate
change
resilience
ameliorating
key
properties.
Agronomic
research
rapidly
evolving
field
moving
less
than
100
publications
2010
more
15,000
end
2020.
Here,
we
summarize
26
rigorously
selected
meta‐analyses
published
since
2016
investigated
multitude
properties
agronomic
performance
parameters
impacted
application,
effects
on
yield,
root
biomass,
water
efficiency,
microbial
activity,
organic
greenhouse
gas
emissions.
All
show
compelling
evidence
overall
beneficial
effect
all
parameters.
One
remaining
challenges
standardization
basic
analysis,
still
lacking
many
studies.
Incomplete
characterization
increases
uncertainty
because
adverse
individual
studies
included
might
be
related
low‐quality
biochars,
would
not
qualify
certification
subsequent
high
content
contaminants,
salinity,
incomplete
pyrolysis,
etc.).
In
summary,
our
systematic
review
suggests
potential
combine
CDR
with
significant
environmental
co‐benefits.
Environmental Science and Ecotechnology,
Journal Year:
2022,
Volume and Issue:
10, P. 100167 - 100167
Published: March 5, 2022
Increasing
global
population
and
decreasing
arable
land
pose
tremendous
pressures
to
agricultural
production.
The
application
of
conventional
chemical
fertilizers
improves
production,
but
causes
serious
environmental
problems
significant
economic
burdens.
Biochar
gains
increasing
interest
as
a
soil
amendment.
Recently,
more
attentions
have
been
paid
biochar-based
slow-release
(SRFs)
due
the
unique
properties
biochar.
This
review
summarizes
recent
advances
in
development,
synthesis,
application,
tentative
mechanism
SRFs.
development
mainly
undergoes
three
stages:
(i)
amendment
using
biochar,
(ii)
interactions
between
nutrients
(iii)
Various
methods
are
proposed
improve
fertilizer
efficiency
majorly
including
in-situ
pyrolysis,
co-pyrolysis,
impregnation,
encapsulation,
granulation.
Considering
distinct
features
different
methods,
integrated
promising
for
fabricating
effective
in-depth
understanding
nutrient
loading
slow
release
is
discussed
based
on
current
knowledge.
Additionally,
perspectives
challenges
potential
SRFs
described.
Knowledge
surveyed
from
this
indicates
that
applying
viable
way
promoting
sustainable
agriculture.
