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Transcript

Using Soil Textural Triangle

Lesson 3

Soil Textural Triangle Practice 1

Lesson 3: Using Soil Textural Triangle

Determine the appropriate soil textural class using the soil textural triangle for the problems below.

40% Sand 50% Silt 10% Clay

Silt Loam

70% Sand 15% Silt 15% Clay

Sandy Loam

35% Sand 15% Silt 50% Clay

Clay

20% Sand 60% Silt 20% Clay

Silt Loam

30% Sand 40% Silt 30% Clay

Clay Loam

or

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Click on the pencil icon in the upper right corner to draw!

Click on the buttons to reveal the answers!

Soil Textural Triangle Practice 2

Lesson 3: Using Soil Textural Triangle

Drag and drop the correct % values and soil textural classes to complete the table

% SAND

% SILT

% CLAY

TEXTURE

5%

27%

22%

10%

35%

31%

23%

7%

50%

33%

7%

23%

36%

70%

45%

83%

38%

55%

Silty Clay

Clay Loam

Clay

Silt

Sandy Clay Loam

Clay Loam

Reveal Answers

% SAND

% SILT

% CLAY

TEXTURE

5%

27%

22%

10%

35%

31%

23%

7%

50%

33%

7%

23%

36%

70%

45%

83%

55%

38%

Silty Clay

Clay Loam

Clay

Silt

Sandy Clay Loam

Clay Loam

Consider there are three general categories of soil texture:

Which soil textural class is best for growing plants?

Coarse

(sandy soils)

Medium

(loamy soils)

Fine

(clay soils)

  • Warms up faster in the spring
  • Good aeration, but can't hold water well

  • Holds water, nutrients, & oxygen in a balance of sand, clay, and organic matter
  • The ideal soil

  • Holds water and nutrients well
  • Smaller pore space
  • Little infiltration of water & less oxygen for for plants