Getting the Dirt on Soils 4 Basic Soil Processes Presented by Name, Position Member/Fellow of the Soil Science Society of America General Pathway Soils are Dynamic What are the 4 basic processes that occur in the soil? Additions (+) • Material(s) that can be added to the soil – Organic – Mineral – Nutrients – Water • Specific processes – Leaf fall (litter) – Rain and Snow (precipitation) – Fertilization – Deposition Losses (-) • Material(s) removed from the soil body – Organic – Mineral – Nutrients – Water • Specific processes – Leaching – Erosion – Plant Uptake – Evaporation – Evapotranspriation (ET) Translocations (↕) • Material(s) moved within the soil body – Organic – Mineral – Nutrients – Water • Specific processes – Eluviation – Illuviation – Salt and movement of other soluble materials – Water infiltration – Burrowing – Mechanical disturbances Transformations (↔) • Material(s) altered within the soil • Specific processes body – Decomposition – Organic – Freeze-thaw – Mineral – Compaction – Nutrients – Dissolving solids – Water – Mineral formation Examples Dust Bowl Questions? The UN Declared 2015 as the International Year of Soils (IYS) to bring more attention to this important natural resource. The Soil Science Society of America celebrates IYS and is happy to bring you this presentation. We hope you take the time to learn more about soils at the many resources listed at the end of this presentation, as you learn more about how… Soils Sustain Life Thank you for listening! For further information, visit: Soils.org/discover-soils – information about all things soil! Soils4teachers.org – Lesson plans, activities, etc. for teachers Soils4kids.org – activities for the K-12 audience Follow us on facebook.com/iheartsoil Soils sustain life!