Storage
in
Sterile
Soil
Storage
in
Sterile
Soil method
is
widely
used
for
preserving
spore
forming
bacteria
and
fungi.
Spore
suspensions
are
added
to
sterile
soil
(sterilized
for
2-3
hours
at
intervals
of
1.2
days)
and
the
mixture
is
dried
at
room
temperature
and
stored
in
a
refrigerator.
Bacterial
cultures
maintained
by
this
procedure
have
been
remained
for
70-80
years.
