Soil Formation Processes and Products Soil Soil is
![Soil Formation Processes and Products Soil Formation Processes and Products](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-1.jpg)
![Soil • Soil is a dynamic, living system. • It facilitates the relationship between Soil • Soil is a dynamic, living system. • It facilitates the relationship between](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-2.jpg)
![Soil • It is critical for the long term health of agriculture, forestry, and Soil • It is critical for the long term health of agriculture, forestry, and](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-3.jpg)
![Soil Texture • Refers to the proportion of sand, silt, and clay particles present Soil Texture • Refers to the proportion of sand, silt, and clay particles present](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-4.jpg)
![Soil Texture Triangle A Soil Texture Triangle gives names to various combinations of clay, Soil Texture Triangle A Soil Texture Triangle gives names to various combinations of clay,](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-5.jpg)
![Soil Porosity • Pores are spaces between particles. • Clay has extremely small pores Soil Porosity • Pores are spaces between particles. • Clay has extremely small pores](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-6.jpg)
![Soil Porosity • Sandy soils have large pores, which allow for greater drainage. Particles Soil Porosity • Sandy soils have large pores, which allow for greater drainage. Particles](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-7.jpg)
![Soil Porosity and Characteristics Sandy Soils Ø Large pores (macropores) Ø Drains quickly after Soil Porosity and Characteristics Sandy Soils Ø Large pores (macropores) Ø Drains quickly after](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-8.jpg)
![Soil Horizons • Distinct layers of soil. • Formed by five primary factors: Parent Soil Horizons • Distinct layers of soil. • Formed by five primary factors: Parent](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-9.jpg)
![Soil Horizons { } O Horizon: Litter Layer • Organic matter – Loose leaves Soil Horizons { } O Horizon: Litter Layer • Organic matter – Loose leaves](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-10.jpg)
![Soil Horizons { } A Horizon: Topsoil Organic matter mixed with minerals, often referred Soil Horizons { } A Horizon: Topsoil Organic matter mixed with minerals, often referred](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-11.jpg)
![Soil Horizons B Horizon: Leaching or Accumulation Layer { } Movement of minerals and Soil Horizons B Horizon: Leaching or Accumulation Layer { } Movement of minerals and](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-12.jpg)
![Soil Horizons C Horizon: Subsoil Also referred to as parent material, which may have Soil Horizons C Horizon: Subsoil Also referred to as parent material, which may have](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-13.jpg)
![Soil Horizons D Horizon: Bedrock In Canada, the majority of our soils originate from Soil Horizons D Horizon: Bedrock In Canada, the majority of our soils originate from](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-14.jpg)
![Factors of Soil Formation Time Parent Material Climate Soil Forming Factors Landscape Organisms Factors of Soil Formation Time Parent Material Climate Soil Forming Factors Landscape Organisms](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-15.jpg)
![Factors of Soil Formation Time Soil formation may range from decades to thousands of Factors of Soil Formation Time Soil formation may range from decades to thousands of](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-16.jpg)
![Factors of Soil Formation Parent Material The geological base of any site (be it Factors of Soil Formation Parent Material The geological base of any site (be it](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-17.jpg)
![Factors of Soil Formation Organisms Both plant and animal life influence the formation of Factors of Soil Formation Organisms Both plant and animal life influence the formation of](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-18.jpg)
![Factors of Soil Formation Landscape Hills, valleys, slopes, and prairies will be affected by Factors of Soil Formation Landscape Hills, valleys, slopes, and prairies will be affected by](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-19.jpg)
![Factors of Soil Formation Climate Soils in different regions will be subject to varying Factors of Soil Formation Climate Soils in different regions will be subject to varying](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-20.jpg)
![Soil Formation Processes 1. Weathering: Process that breaks down rocks and minerals. a. Physical Soil Formation Processes 1. Weathering: Process that breaks down rocks and minerals. a. Physical](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-21.jpg)
![Soil Formation Processes 2. Erosion: The displacement of soil, sediment, and rock fragments, in Soil Formation Processes 2. Erosion: The displacement of soil, sediment, and rock fragments, in](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-22.jpg)
![Soil Formation Processes 3. Decomposition: Decomposition is the breakdown of complex organic matter into Soil Formation Processes 3. Decomposition: Decomposition is the breakdown of complex organic matter into](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-23.jpg)
![Products of Soil Formation Processes Part 2 Products of Soil Formation Processes Part 2](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-24.jpg)
![Organic Matter • Derived from living and decomposed organisms. ü Black, decomposed organic matter Organic Matter • Derived from living and decomposed organisms. ü Black, decomposed organic matter](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-25.jpg)
![Organic Matter ü Promotes water & nutrient retention. ü Provides a great environment for Organic Matter ü Promotes water & nutrient retention. ü Provides a great environment for](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-26.jpg)
![Soil Fertility Photo provided by Agriculture and Agri-Food Canada • Soil fertility can be Soil Fertility Photo provided by Agriculture and Agri-Food Canada • Soil fertility can be](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-27.jpg)
![Microorganisms • Decompose organic matter. • Add nutrients for plant uptake. Photo provided by Microorganisms • Decompose organic matter. • Add nutrients for plant uptake. Photo provided by](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-28.jpg)
![Microorganisms üRhizobia: Soil bacteria that helps legumes use nitrogen from the atmosphere. (e. g. Microorganisms üRhizobia: Soil bacteria that helps legumes use nitrogen from the atmosphere. (e. g.](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-29.jpg)
- Slides: 29
![Soil Formation Processes and Products Soil Formation Processes and Products](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-1.jpg)
Soil Formation Processes and Products
![Soil Soil is a dynamic living system It facilitates the relationship between Soil • Soil is a dynamic, living system. • It facilitates the relationship between](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-2.jpg)
Soil • Soil is a dynamic, living system. • It facilitates the relationship between living and non-living components of terrestrial ecosystems. Soil Composition Organisms 5% Organic Matter 5% Inorganic Matter 40% Water & Air 50%
![Soil It is critical for the long term health of agriculture forestry and Soil • It is critical for the long term health of agriculture, forestry, and](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-3.jpg)
Soil • It is critical for the long term health of agriculture, forestry, and urban influenced ecosystems. Soil Composition Organisms 5% Organic Matter 5% Inorganic Matter 40% Water & Air 50%
![Soil Texture Refers to the proportion of sand silt and clay particles present Soil Texture • Refers to the proportion of sand, silt, and clay particles present](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-4.jpg)
Soil Texture • Refers to the proportion of sand, silt, and clay particles present in soil. • Texture is the determining factor for soil qualities such as soil fertility and water holding capacity.
![Soil Texture Triangle A Soil Texture Triangle gives names to various combinations of clay Soil Texture Triangle A Soil Texture Triangle gives names to various combinations of clay,](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-5.jpg)
Soil Texture Triangle A Soil Texture Triangle gives names to various combinations of clay, silt, and sand. ØClay: Very small particle size; binds water and nutrients and makes soils feel sticky. ØSilt: Larger than clay particles; makes soils feel slippery. ØSand: Largest particle size; makes soils feel gritty. ØLoam: Mixture of clay, silt, & sand; best suited for crops.
![Soil Porosity Pores are spaces between particles Clay has extremely small pores Soil Porosity • Pores are spaces between particles. • Clay has extremely small pores](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-6.jpg)
Soil Porosity • Pores are spaces between particles. • Clay has extremely small pores (micropores), which allow them to retain water. Particles Size Sand Silt Clay
![Soil Porosity Sandy soils have large pores which allow for greater drainage Particles Soil Porosity • Sandy soils have large pores, which allow for greater drainage. Particles](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-7.jpg)
Soil Porosity • Sandy soils have large pores, which allow for greater drainage. Particles Size Sand Silt • Loam soil has a combination of pores sizes üGreat for air and water movement üBest for plant growth Clay
![Soil Porosity and Characteristics Sandy Soils Ø Large pores macropores Ø Drains quickly after Soil Porosity and Characteristics Sandy Soils Ø Large pores (macropores) Ø Drains quickly after](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-8.jpg)
Soil Porosity and Characteristics Sandy Soils Ø Large pores (macropores) Ø Drains quickly after rain or watering Ø Dries out quickly Silt Soils Ø Medium Pores Ø Drains fairly well Ø Holds more moisture than sandy soils Ø Easily compacted Clay Soils Ø Small pores (micropores) Ø Drains slowly
![Soil Horizons Distinct layers of soil Formed by five primary factors Parent Soil Horizons • Distinct layers of soil. • Formed by five primary factors: Parent](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-9.jpg)
Soil Horizons • Distinct layers of soil. • Formed by five primary factors: Parent material, climate, topography, vegetation, and time. Photo provided by the James Hutton Institute
![Soil Horizons O Horizon Litter Layer Organic matter Loose leaves Soil Horizons { } O Horizon: Litter Layer • Organic matter – Loose leaves](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-10.jpg)
Soil Horizons { } O Horizon: Litter Layer • Organic matter – Loose leaves & organic debris that are beginning to decompose. • Relatively thin in prairie and agricultural soils, significantly thicker in forest soils. Photo provided by the Plant and Soil Science e. Library: http: //passel. unl. edu/pages /
![Soil Horizons A Horizon Topsoil Organic matter mixed with minerals often referred Soil Horizons { } A Horizon: Topsoil Organic matter mixed with minerals, often referred](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-11.jpg)
Soil Horizons { } A Horizon: Topsoil Organic matter mixed with minerals, often referred to as topsoil. • Relatively thicker in grassland soil. • Highest nutrient availability. • Abundant biological activity. Photos provided by the Plant and Soil Science e. Library : http: //passel. unl. edu/pages /
![Soil Horizons B Horizon Leaching or Accumulation Layer Movement of minerals and Soil Horizons B Horizon: Leaching or Accumulation Layer { } Movement of minerals and](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-12.jpg)
Soil Horizons B Horizon: Leaching or Accumulation Layer { } Movement of minerals and organic matter both into and out of this layer, depending on climate and vegetation. • Can result in a horizon of various colours, texture, and nutrient levels. Photos provided by the Plant and Soil Science e. Library : http: //passel. unl. edu/pages /
![Soil Horizons C Horizon Subsoil Also referred to as parent material which may have Soil Horizons C Horizon: Subsoil Also referred to as parent material, which may have](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-13.jpg)
Soil Horizons C Horizon: Subsoil Also referred to as parent material, which may have originated from glaciers, rivers, volcanic deposits, or weathered bedrock. { Photos provided by the Plant and Soil Science e. Library : http: //passel. unl. edu/pages / } Ca. CO 3 DEMO • Higher concentration of clay. • Accumulation of leeched matter.
![Soil Horizons D Horizon Bedrock In Canada the majority of our soils originate from Soil Horizons D Horizon: Bedrock In Canada, the majority of our soils originate from](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-14.jpg)
Soil Horizons D Horizon: Bedrock In Canada, the majority of our soils originate from past glacier activity. Therefore, bedrock is not commonly found in southern Saskatchewan, but is present in forest soils in northern Saskatchewan { Photos provided by the Plant and Soil Science e. Library : http: //passel. unl. edu/pages / } • Consolidated rock. • Layer is too hard to dig with spade even when moist.
![Factors of Soil Formation Time Parent Material Climate Soil Forming Factors Landscape Organisms Factors of Soil Formation Time Parent Material Climate Soil Forming Factors Landscape Organisms](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-15.jpg)
Factors of Soil Formation Time Parent Material Climate Soil Forming Factors Landscape Organisms
![Factors of Soil Formation Time Soil formation may range from decades to thousands of Factors of Soil Formation Time Soil formation may range from decades to thousands of](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-16.jpg)
Factors of Soil Formation Time Soil formation may range from decades to thousands of years.
![Factors of Soil Formation Parent Material The geological base of any site be it Factors of Soil Formation Parent Material The geological base of any site (be it](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-17.jpg)
Factors of Soil Formation Parent Material The geological base of any site (be it glacial, alluvial, volcanic, or bedrock) will influence the soil-forming process and resulting soil characteristics such as fertility, texture, and resistance to erosion.
![Factors of Soil Formation Organisms Both plant and animal life influence the formation of Factors of Soil Formation Organisms Both plant and animal life influence the formation of](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-18.jpg)
Factors of Soil Formation Organisms Both plant and animal life influence the formation of soil, largely through additions and transfers of nutrients and energy.
![Factors of Soil Formation Landscape Hills valleys slopes and prairies will be affected by Factors of Soil Formation Landscape Hills, valleys, slopes, and prairies will be affected by](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-19.jpg)
Factors of Soil Formation Landscape Hills, valleys, slopes, and prairies will be affected by sun, wind, and water runoff in different ways.
![Factors of Soil Formation Climate Soils in different regions will be subject to varying Factors of Soil Formation Climate Soils in different regions will be subject to varying](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-20.jpg)
Factors of Soil Formation Climate Soils in different regions will be subject to varying degrees of temperature and moisture effects. The differences in climate causes weathering of soil to occur at different rates.
![Soil Formation Processes 1 Weathering Process that breaks down rocks and minerals a Physical Soil Formation Processes 1. Weathering: Process that breaks down rocks and minerals. a. Physical](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-21.jpg)
Soil Formation Processes 1. Weathering: Process that breaks down rocks and minerals. a. Physical Weathering: Caused by wind, rain, freezing, and temperature fluctuations. b. Chemical Weathering: Caused by water, oxygen, carbon dioxide, and soil acidity.
![Soil Formation Processes 2 Erosion The displacement of soil sediment and rock fragments in Soil Formation Processes 2. Erosion: The displacement of soil, sediment, and rock fragments, in](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-22.jpg)
Soil Formation Processes 2. Erosion: The displacement of soil, sediment, and rock fragments, in addition to a loss of nutrients and organic matter. Photo provided by the Government of Alberta Commonly a result of: ü Abiotic Factors – Wind, Ice, Flowing water. ü Human Activities – Poor farming practices, Overgrazing, Deforestation.
![Soil Formation Processes 3 Decomposition Decomposition is the breakdown of complex organic matter into Soil Formation Processes 3. Decomposition: Decomposition is the breakdown of complex organic matter into](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-23.jpg)
Soil Formation Processes 3. Decomposition: Decomposition is the breakdown of complex organic matter into its more basic nutrients element that are recycled and taken up by plants.
![Products of Soil Formation Processes Part 2 Products of Soil Formation Processes Part 2](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-24.jpg)
Products of Soil Formation Processes Part 2
![Organic Matter Derived from living and decomposed organisms ü Black decomposed organic matter Organic Matter • Derived from living and decomposed organisms. ü Black, decomposed organic matter](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-25.jpg)
Organic Matter • Derived from living and decomposed organisms. ü Black, decomposed organic matter in topsoil. The darker the soil, the greater the amount of organic matter.
![Organic Matter ü Promotes water nutrient retention ü Provides a great environment for Organic Matter ü Promotes water & nutrient retention. ü Provides a great environment for](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-26.jpg)
Organic Matter ü Promotes water & nutrient retention. ü Provides a great environment for living organisms. In most soils (especially grasslands), the soil lightens in colour from black to brown to grey as the organic matter (i. e. soil fertility) decreases.
![Soil Fertility Photo provided by Agriculture and AgriFood Canada Soil fertility can be Soil Fertility Photo provided by Agriculture and Agri-Food Canada • Soil fertility can be](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-27.jpg)
Soil Fertility Photo provided by Agriculture and Agri-Food Canada • Soil fertility can be affected by: Ø Climate and vegetation. Ø Soil management and site history. Ø Events such as floods, windstorms, and drought.
![Microorganisms Decompose organic matter Add nutrients for plant uptake Photo provided by Microorganisms • Decompose organic matter. • Add nutrients for plant uptake. Photo provided by](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-28.jpg)
Microorganisms • Decompose organic matter. • Add nutrients for plant uptake. Photo provided by Simon Egli, WSL
![Microorganisms üRhizobia Soil bacteria that helps legumes use nitrogen from the atmosphere e g Microorganisms üRhizobia: Soil bacteria that helps legumes use nitrogen from the atmosphere. (e. g.](https://slidetodoc.com/presentation_image_h2/7e2c5eb52e48618b8893a290d6a2fab9/image-29.jpg)
Microorganisms üRhizobia: Soil bacteria that helps legumes use nitrogen from the atmosphere. (e. g. beans, lentils, etc. )
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