NRES 201 Lecture 11 Outline of Last Lecture I. Soil spatial variability in the fieldII. Techniques and tools for mapping soilsIII. Making a soil surveyIV. Using soil surveysOutline of Current Lecture V. Interpretive classification of soilsVI. Geographic information systemsCurrent LectureBuilding site development - - Concrete and steel corrosion- Dwellings with or without basementsConstruction materials - - Gravel source, roadfill source, sand source, source of reclamation material, topsoil sourceDisaster recovery planning - - Large animal disposal, clay linter material source, composting, rubble and debris disposalLand classification - - Tree and shrub suitability- Farmland qualityo Prime farmland, prime farmland (conditional), farmland of statewide importance,not prime farmland- Hydric rating- Taxonomic group- Land capability class - o Limitation ratings for agricultural production o Subclasses designate the type of limitation Erosion (e) Wetness, drainage or flooding (w) Root zone limitation from acidity, density or shallowness (s)These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute. Climatic limitation (c)o Class I Deep and well drained soils Nearly level topography Suited for continuous cropping Provide the greatest productivity at the lowest costo Class II Subject to some limitation for tillage and row - cropping Conservation practices may be necessary o Class III Subject to some limitation for tillage and row - cropping Rotations must include crops for soil cover Drainage systems needed for w subclasso Class IV Cultivation possible but very limited Cropping mostly to small grains, sod, or hay Row cropping requires no - till and special conservation practices Wetness can also be a major limitationo Class V Suitable for pasture but not cropping due to- Frequent stream flooding- Inadequate growing season- Stony or rocky soil- Ponds that cannot be drainedo Class VI Severe limitations restrict usage to: Pasture, Range, Woodland, Wildlife Restricted timber harvesto Class VII Pasture improvement not feasible Special methods for timber harvesto Class VIII No commercial plant or animal production Use for parks, recreation, or wildlife refugeRange in soil productivity - - Muscatune is our most productive soil- Drummer is the state soil- Romeo is our least productive soilGeographic Information Systems (GIS) - Computer-based system to aid in the collection,maintenance, storage, analysis, output, and distribution of geographic (spatial)
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