CAMERON LAWRENCEx - GeographyinActionSHSS

heehawultraMechanics

Feb 22, 2014 (3 years and 7 months ago)

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CAMERON LAWRENCE

SOIL TEXTURE

GEOGRAPHY

6A

WHAT IS SOIL TEXTURE ?


The term soil texture refers to the degree of
coarseness or fitness of the mineral matter in
the soil.


It is determined by the proportion of sand ,
silt and clay particles.




*NOTE
-

Particles larger than sand are
grouped together and described as stones.

SANDY SOIL:


SANDY SOIL FEELS GRITTY AND LACKS
COHESION.


SILTY SOIL:


A silty soil has a smoother, soap like feel as
well as having some cohesion.


CLAY SOILS:


A clay soil sticky and plastic when wet and
being very cohesive, maybe rolled into
various shapes.


SOIL TESTING:

there are several ways to test soil
samples three easy to do test are
by feel, sieving and sedimentation.


1)
FEEL:

SOIL TESTING CON’T:


2)
SIEVING:

SOIL TESTING CONT:


3)
SEDIMENTATION:

SOIL TEXTURE ANALYSIS
(TRIANGULAR GRAPH)

THE IMPORTANCE OF TEXTURE:


As texture controls the size and spacing of
soil pores, it directly affects the soil water
content, water flow and extent of aeration.



* TEXTURE GREATLY INFLUENCES SOIL
STRUCTURE.

CONCLUSION: HOW DOES TEXTURE AFFECT
FARMING