College of Agriculture and Life Sciences, the University of Arizona   How Chemicals Move Through Soil

Ideal for viewers concerned with water quality and other groundwater issues. This video looks closely at how chemicals move through various soil types and conditions, especially chemicals carried by water. Concepts presented include chemical transport (diffusion, convection and hydrodynamic dispersion) ... Chemical interactions (adsorption, absorption, desorption, cation exchange) ... and chemical transformations (hydrolysis, photolysis, oxidation and reduction) as they occur in soil. Computer models actively demonstrate comparisons of different chemicals as they move through soil. Excellent for students and people working with agriculture, golf courses, parks, landscaping, athletic fields, wetlands or landfills.
Length: 30 minutes

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Jack Watson
Date: 1998