Envirothon ~ Soils |

Students should be able to:
1. Know soil vocabulary and terminology
including names of soil constituents: sand, silt, clay, organic matter, air and
water.
2. Be able to describe topographic features including names
of landforms and estimating percent slope.
3. Understand the origin of soil parent materials.
4. Be able to describe a soil profile
including depth, horizons, color, texture and structure.
5. Be able to determine the presence of human induced soil
compaction.
6. Be able estimate soil properties including infiltration,
permeability, water holding capacity, nutrient holding capacity, effective rooting depth,
susceptibility to subsidence, and susceptibility to mass movement (land slide).
7. Rate the suitability of a soil for
various uses by man including building site development and roads, sanitary facilities
(landfills and septic tank filter fields), animal waste management, water management,
water quality and nutrient management, agriculture, silviculture, and wildlife habitat.
8. Recognize the causes of soil erosion
and recommend practices to protect the soil from erosion.
9.
Recognize agricultural impacts to soils including erosion
(sheet and rill, ephemeral gullies, classic gullies, road scouring and mass
movement), poor tilth, compaction, salinization, subsidence, excess animal waste,
excess fertilizers and excess pesticides.
10. Recognize urban impacts to soils including erosion, sedimentation, and
compaction.
11. Knows ways in which cultural history and cultural resources can be identified
in the soil.
12. Understand how hydrologic alterations can affect the soil.
13. Know how to use a soil survey report including use of the map index, reading
aerial photographs, finding soil boundaries and symbols on a detailed soil map, reading
soil map unit descriptions, and reading tables.

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