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Imperial Irrigation District

Imperial Irrigation District. Soils of the Imperial Valley. Steve Burch Engineer Tech I / Soil Scientist Ag Water Science Unit Ag Water Management Section (760) 339-9084. Soil Components. Mineral Particles (Sand, Silt, Clay) Texture Organic Matter (OM) Pore Space (Air & Water) Salts

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Imperial Irrigation District

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  1. Imperial Irrigation District Soils of the Imperial Valley Steve Burch Engineer Tech I / Soil Scientist Ag Water Science Unit Ag Water Management Section (760) 339-9084

  2. Soil Components • Mineral Particles (Sand, Silt, Clay) • Texture • Organic Matter (OM) • Pore Space (Air & Water) • Salts • Nutrients / Other Chemical Compounds • Storage Reservoir / Anchor

  3. Soil Texture Triangle Clay Sand Silt

  4. Soil Structure Types

  5. Typical air-water-soil proportions of a typical loam soil at field capacity.

  6. The matrix of a soil holds water by surface tension, just like capillary tubes.

  7. Clay colloid with surrounding soil water and precipitates in the soil water.

  8. Soil Horizons

  9. Where Do Soils Come From? • Formed in Place • Transported from Elsewhere • Wind • Water • Glaciers

  10. Dealing with Hard/Tough Soils • Problem of Soil Physical Properties or Chemistry? • Internal soil drainage • Soil Texture/Structure • Salinity • Add Soil Amendments • Gypsum • Sulfur • Organic Matter • REGARDLESS • Leach • Leach

  11. Imperial Irrigation District Questions?

  12. Imperial Irrigation District Thank You

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