sizing up soils
DESCRIPTION
Sizing Up Soils. If you have ever made a mud pie or sandcastle, you know:. Each type of SOIL you touch feels different…. BECAUSE. SOIL has different TEXTURES. Soil TEXTURE. Is the PERCENTAGE of . SAND. SILT. and CLAY. particles. - PowerPoint PPT PresentationTRANSCRIPT
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Sizing Up Soils
![Page 2: Sizing Up Soils](https://reader036.vdocuments.net/reader036/viewer/2022062411/56816919550346895de03717/html5/thumbnails/2.jpg)
SOIL has different TEXTURES
Each type of SOIL you touch feels different…
If you have ever made a mud pie or sandcastle, you know:
BECAUSE
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Soil TEXTUREIs the PERCENTAGE of
SANDSILT
and CLAYparticles
![Page 4: Sizing Up Soils](https://reader036.vdocuments.net/reader036/viewer/2022062411/56816919550346895de03717/html5/thumbnails/4.jpg)
Soil TEXTURE can be found using a TEXTURE TRIANGLE
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The best way to learn this is to get out and FEEL many different types of soil.
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All of these PARTICLES fit together in different ways…They form the
BUILDING BLOCKS of soilThis is the soil’s STRUCTURE…And they come in different
SHAPES called PEDS
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Granular soil structure…
… looks like
Parmesan Cheese
![Page 8: Sizing Up Soils](https://reader036.vdocuments.net/reader036/viewer/2022062411/56816919550346895de03717/html5/thumbnails/8.jpg)
Blocky soil structure…
… looks like Italian sausage
![Page 9: Sizing Up Soils](https://reader036.vdocuments.net/reader036/viewer/2022062411/56816919550346895de03717/html5/thumbnails/9.jpg)
Columnar or Prismatic Structure…
… look like breadstick
s
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Platy Structure…
… look like a stack of
pepperoni’s
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Massive Structure…
… looks like uncooked pizza dough
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Single Grained Structure…
… is like a pile of salt
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Soils can be damagedBY HUMANS!
Clay soils do not DRAIN
WELL, water pools on the
SURFACE, and structure gets
destroyed
TRAFFIC destroys structure
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Good STRUCTURE = Healthy Soils
Keep It Covered!
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DUST across the sea! Windstorms in the Sahara Desert carries dust thousands of miles across the Atlantic.Why is this bad?
Why is this good?
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Vocabulary
• Soil Texture• Soil Structure• Sand • Silt• Clay• Blocky• Columnar• Erode• Peds
• Granular• Prismatic• Platy• Massive• Single Grain• Enzyme
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Vocabulary
• Soil particles – the individual building blocks that make up soil. The sand, silt, and clay
• Soil traffic – any time a tractor, vehicle, or even a person moves over the soil surface and disrupts it.