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