Soil Management

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Soil Management

• Bryan McElvany
• Research Coordinator
• Warnell School of Forest Resources
• Patrick Davies

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Soil Management

• Limitations to some sort of land use are
  generally due to a combination of three main
  factors.
• Soil Chemical Characteristics chemical types,
  nutrient supply, pH, and others.
• Soil Physical Characteristics soil texture,
  soil structure, soil density, and others.
• Site Factors slope, water table, location, and
  others.

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Soil Erosion
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Soil Erosion

• Erosion is the wearing away of material by wind,
  water, ice, or other geologic agents.
• Three main types of erosion.
• Sheet erosion the removal of a uniform thin
  layer of soil.
• Rill erosion numerous and randomly occurring
  small channels are formed.
• Gully erosion removal of soil from a narrow
  area to considerable depths where water
  accumulates.

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Soil Erosion
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Soil Erosion by Water
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Soil Erosion by Wind
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Soil and Water
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Soil Drainage

• Soil drainage is affected by soil physical
  properties including soil texture and structure.
• Drainage is also affected by depth to water table.

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Soil Drainage Class

• Refers to the frequency and duration of periods
  of saturation in the soil.
• Excessively drained
• Somewhat excessively drained
• Well drained
• Moderately well drained
• Somewhat poorly drained
• Poorly drained
• Very poorly drained

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Hydric Soils and Wetlands

• Wetland is defined as an area with wetland
  hydrology, hydrophytic vegetation, and hydric
  soils. (must have all 3)
• A hydric soil is one that formed under periods of
  saturation long enough during the growing season
  to develop anaerobic conditions. Without oxygen,
  iron does not rust. This leads to gray colors.
  That gray color is one way to define a hydric
  soil.

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The End

• Thanks