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Soil Science. Springville, Utah. Where does soil come from? Rocks Minerals Organic Matter. Sagebrush-Cold Desert. Mollisol Profile. What are the main components of soil?. Mineral Matter Air Water Organic Matter. Soil Particles. Note: clays are microscopic in size !. Clay minerals

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Springville, Utah

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Soil Science

Springville, Utah


  • Where does soil come from?

  • Rocks

  • Minerals

  • Organic Matter


Sagebrush-Cold Desert

Mollisol Profile


What are the main components of soil?

  • Mineral Matter

  • Air

  • Water

  • Organic Matter


Soil Particles

Note: clays are microscopic in size !


Clay minerals

photographed

with an electron

Microscope.

Note: they are plate

or flake like and

are stacked on top

of each other.

They are electrically

charged and act like

magnets that attract

and hold plant

nutrients.


Soil should have aggregates!


Organic matter is soil gold !


What causes soil erosion?

Water

Wind

No Vegetation


My Neighbor has my soil!


Rain drop erosion


The Great Dust Bowl

Wind Erosion


The Great Dust Bowl


Clouds of Silt


Wind Erosion removed topsoil


Wind eroded soil


Rill Erosion


Gully Erosion

How did the Canyon Lands

of Utah form?


Vegetation protects soil


Erosion Prayer


Our lives depend on preserving our topsoils.


Cotton in Furrows


What are the FACTORS

that make SOIL?

TIME

1000’S TO 10,000’S OF YEARS

LAY OF THE LAND

TOPOGRAPHY

LIVING ORGANISMS

ANIMALS AND PLANTS

CLIMATE

HOT/COLD, WIND/RAIN

PARENT MATERIAL

ROCKS AND MINERALS


Topography

Physical land features


What are some practices

Of

SOIL CONSERVATION?

Terracing

Strip Cropping

Contour Plowing

Tilling

Wind Breaks

Ground Covers


Strip Cropping

Contour Plowing


Contour Farming


Contour Farming


Tilling Soil on flat land


Furrow Irrigation


Minimum Tillage


Strip Cropping


Strip Crop Farming


Soil - We cannot live without it!


Give a hand to the land


Internet Sites

  • http://www.tx.nrcs.usda.gov/class/sammy.htm


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