soil_composiion

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Slide 2: 

Soil Science 4th Grade Springville, Utah

Slide 3: 

Where does soil come from? Rocks Minerals Organic Matter

Slide 7: 

Mollisol Profile Sagebrush-Cold Desert

What are the main components of soil? : 

What are the main components of soil? Mineral Matter Air Water Organic Matter

Slide 11: 

Soil Particles Note: clays are microscopic in size !

Slide 13: 

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.

Slide 14: 

Soil should have aggregates!

Slide 15: 

Organic matter is soil gold !

Slide 16: 

What causes soil erosion? Water Wind No Vegetation

Slide 17: 

My Neighbor has my soil!

Slide 18: 

Rain drop erosion

Slide 19: 

The Great Dust Bowl Wind Erosion

Slide 20: 

The Great Dust Bowl

Slide 21: 

Clouds of Silt

Slide 22: 

Wind Erosion removed topsoil

Slide 23: 

Wind eroded soil

Slide 24: 

Rill Erosion

Slide 25: 

Gully Erosion How did the Canyon Lands of Utah form?

Slide 26: 

Vegetation protects soil

Slide 27: 

Erosion Prayer

Slide 29: 

Our lives depend on preserving our topsoils.

Slide 31: 

Cotton in Furrows

Slide 32: 

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

Slide 33: 

Topography Physical land features

Slide 34: 

What are some practices Of SOIL CONSERVATION? Terracing Strip Cropping Contour Plowing Tilling Wind Breaks Ground Covers

Slide 37: 

Strip Cropping Contour Plowing

Slide 38: 

Contour Farming

Slide 39: 

Contour Farming

Slide 40: 

Tilling Soil on flat land

Slide 41: 

Furrow Irrigation

Slide 42: 

Minimum Tillage

Slide 43: 

Strip Cropping

Slide 44: 

Strip Crop Farming

Slide 45: 

Soil - We cannot live without it!

Slide 46: 

Give a hand to the land

Internet Sites : 

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

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