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Soil Texture by Feel |
Step 1 (get and
moisten sample) Place some soil (about
the size of a small egg) in your hand and moisten it. Let
the water soak in and then work the soil between your fingers
until it is the same moisture throughout. Once the soil is
moist, try to form a ball.
If the soil:
* forms a ball, go to Step 2
* does not form a ball, go to
Step 5 |
Step 2 (Test for
Clay) A. if
the soil:
* is really sticky
* hard to squeeze
* stains your hands
* has a shine when rubbed
* forms a long ribbon (5+ cm) w/o breaking
Call it clay and go to Step 3, otherwise, go to B
B. if the soil:
* is somewhat sticky
* is somewhat hard to squeez
*forms a medium ribbon (2-5 cm)
Call if clay loam and go to Step 3, otherwise go to C
C. if the soil
is:
* soft
* smooth
* easy to squeeze
* at most slightly sticky
* forms a short ribbon (+2 cm)
Call it loam and go to Step 3, otherwise, go to D
D. if the soil
forms a ball but no ribbon, go to Step 4 |
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Step 3 (Refine initial
classification from Step 2 for relative amounts of sand and
silt) Wet a small pinch of the soil in
your palm and rub it with a forefinger
If the soil feels:
* very gritty, go to E
* very smooth, with no gritty feeling, go to F
* only a little gritty, go to G
E. Add the word
sandy to the initial classification
Soil texture is:
* sandy clay
* sandy clay loam
* sandy loam
F. Add the word
silt or silty to initial classification
Soil texture is:
* silty clay
*silty clay loam
* silt loam
G. Leave the
original classification
Soil texture is:
* clay
* clay loam
* loam |
Step 4 (Test for
loamy sand or silt)
If the soil:
* forms a ball
* does not form a ribbon
* and is
H. very gritty
Soil texture is loamy
sand
or I. very soft and smooth
with no gritty feeling
Soil texture is silt |
Step 5 (Test for sand)
If the soil:
* forms no ball and falls apart in your hand
Soil texture is sand
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