Soil is a mixture of mineral and organic material at the surface of the earth that serves as a natural medium for growing plants.
The five factors that control the formation of soils are:
The Soils section of the contest will be broken up into several categories, including soil properties, soil biology, landforms and parent material, soil maps, and interpretations. A soil profile will be excavated and available for students to describe horizons, texture, structure, permeability, depth to water table, color, and other features.
For more information, please see the Soil Guide below.