Imperial Irrigation District

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Presentation transcript:

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 Nutrients / Other Chemical Compounds Storage Reservoir / Anchor

Soil Texture Triangle Clay Sand Silt

Soil Structure Types

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

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

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

Soil Horizons

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

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

Imperial Irrigation District Questions?

Imperial Irrigation District Thank You