Screening and Identification of Cold-Tolerant Phosphorus and Potassium Solubilizing Bacteria and Their Growth-Promoting Effects on Soybean in Cold Regions
Agronomy,
Journal Year:
2024,
Volume and Issue:
15(1), P. 40 - 40
Published: Dec. 27, 2024
In
this
study,
we
collected
soybean
inter-root
soil
(clay
soil)
from
the
cold
region
of
Heilongjiang
Province,
China,
screening
for
cold-tolerant
phosphorus-
and
potassium-solubilizing
bacteria
by
gradient-cooling-directed
design
mixed
bacterial
agents.
This
study
screened
phosphorus-solubilizing
constructed
We
analyzed
strain’s
phosphorus/potassium
solubilizing
capacity,
as
well
its
organic
acid
secretion
ability,
to
reveal
mechanism
detoxification
phosphorus
potassium.
Clay
Heilongjiang,
was
potting
trials.
The
pot
experiment
used
investigate
growth-promoting
effects
strains
applied
soybeans
analyze
changes
in
activity
on
growth.
A
dominant
strain
P-5
(Pantoea
ananatis)
screened,
amount
34.94
mg/L
with
a
PSI
(Phosphorus
Solubilization
Index)
1.80
7
days
incubation
at
15
°C.
OD600
value
(optical
density
600
nm)
10th
day
0.61.
bacteria,
K-1
(Rahnella
aquatilis),
solubilized
23.02
potassium
under
same
culture
conditions,
KSI
(Potassium
Solubilization)
1.51
an
0.59
10.
agents
H-5
(25%
75%
K-1),
designed
above
two,
detoxified
62.58
37.59
conditions.
It
shown
that
P-2
secretes
gluconic
lactic
degrade
insoluble
low
temperatures
citric
showed
application
(PSB),
(KSB),
(MSB)
alone
could
enhance
relative
abundance
Pseudomonas,
Rhizobium,
other
genera
planting
soil,
compared
control
treatment
without
(BLK).
Indirectly,
they
can
accumulation
various
organs
soybean,
promote
development
leaves
stems,
achieve
effect
promoting
production
increasing
income.
has
important
theoretical
replacement
chemical
fertilizer
microbial
it
practical
strategic
significance
promotion
income
green
safety
China’s
main
grain-producing
areas.
Language: Английский
Influence of Decomposition of Different Cover Crop Types on Phosphorus Adsorption in Clayey Soil
Revista de Gestão Social e Ambiental,
Journal Year:
2024,
Volume and Issue:
18(4), P. e08039 - e08039
Published: July 16, 2024
Objective:
This
study
aimed
to
evaluate
the
influence
of
adding
organic
compounds
derived
from
decomposition
different
types
biomass
on
phosphorus
retention
by
soil,
using
Langmuir
isotherm
model
assess
this
influence.
Theoretical
Framework:
One
important
parameter
for
assessing
matter
in
soils
is
addition
acids
system,
which
can
come
cover
crops.
Method:
The
samples
were
collected
experimental
area
Federal
Technological
University
Paraná
(UTFPR)
city
Dois
Vizinhos
and
subsequently
dried,
ground,
sieved.
For
experiments,
seven
doses
defined:
0,
20,
40,
80,
120,
160,
200
mg
L-1.
Results
Discussion:
analysis
variance
indicated
a
relationship
between
MPAC
(maximum
adsorption
capacity)
temporal
effect,
without
showing
cultivated
species.
Available
was
significant
hairy
vetch,
lupine,
ryegrass,
turnip.
Research
Implications:
Among
crop
studied,
lupine
showed
best
results
MAPC
thus
having
release
rates.
Originality/Value:
contributes
literature
evaluating
crops
planted
soil
availability
soil.
It
great
importance
maintaining
agricultural
productivity
over
time
through
management
approaches.
Language: Английский