Sustainable Soil Managment
Glossary
V
VERMICULITE. A 2:1-type silicate clay, usually formed from mica, that has a high net negative charge stemming mostly from extensive isomorphous substitution of aluminum for silicon in the tetrahedral sheet.
VERTISOLS. An order in Soil Taxonomy. Clayey soils with high shrink–swell potential that have wide, deep cracks when dry. Most of these soils have distinct wet and dry periods throughout the year.
VOLATILIZATION. The loss of a compound in gaseous form from a solid or liquid phase.
