soil temperature

shamebagBiotechnology

Feb 22, 2013 (4 years and 4 months ago)

240 views


SOIL
ATMOSPHERE


SOIL

WATER


SOIL

pH


SOIL

TEMPERATURE


INTERACTION

BETWEEN

ENVIRONMENTAL


FAC
T
ORS



Gas

in the soil

comes from

the outside
air

and

the

activity of

microbial


>
N2,

the

N

fixation

by microbes,

soil

N

cycle

processes

>
O2, the result of

photosynthesis

>
CO2, the result of

microbial

respiration


The pores

in the soil

mineral

or

organic

content
of

the

gas

and

water


Gas content

in the soil

determine the

type

of microbes:

> aerobic
microbial

>
anaerobic

microbial

>
facultative

microb
ial



Ground water

is essential

to

the life of

the soil

biot
a

G
round

water

is determine :

>
soil
humidity

and


>
availability
of water

for

soil

biota:

the solubility

of

minerals

for

plant

and microbe

s
nutrients

is high



Soil pH plays an important role in
avaibility

of
soil
nutrient to soil

microorganism


S
oil pH
acts
on the action of the enzyme that
produced
of
the soil microbial


On acid soils, nutrients are less available to soil biota


On neutral soils, sufficient

available nutrients for the
soil biota



Soil

temperature

influence :


> the

reaction

physiology

of biota

cell


> physico
-
chemical characteristics of

the environment
example:



soil

volume,

pressure,

oxidation
-
reduction
potential,

diffusion, viscosity,
structure,

groundwater,

surface

pressure



High

temperature, protein

denaturation

and

microbial
cell

wall

denaturation


Low

temperatures,

microbial activity

stopped





Interaction

Between Environment Factor

Ekpo,

M
.

A
.
,

et

al
.

2008
.

RATE

OF

BIODEGRADATION


OF

CRUDE

OIL

BY

MICROORGANISMS


ISOLATED

FROM

OIL

SLUDGE


ENVIRONMENT
.


African

Journal

of


Biotechnology

,

7

(
24
)
:

4495
-
4499
.


Kumar,

N
.
,

et

al
.

2010
.

ISOLATION

AND

SCREENING


OF


SOIL

ACTINOMYCETES

AS

SOURCE

OF


ANTIBIOTICS

ACTIVE

AGAINST

BACTERIA
.


International

Journal

of

Microbiology

Research,


2
(
2
)
:

12

-
16
.