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Custom Soil Resource Report <br /> Weathering <br /> All physical disintegration, chemical decomposition, and biologically induced <br /> changes in rocks or other deposits at or near the earth's surface by atmospheric <br /> or biologic agents or by circulating surface waters but involving essentially no <br /> transport of the altered material. <br /> Well graded <br /> Refers to soil material consisting of coarse grained particles that are well <br /> distributed over a wide range in size or diameter. Such soil normally can be <br /> easily increased in density and bearing properties by compaction. Contrasts <br /> with poorly graded soil. <br /> Wet spot (map symbol) <br /> A somewhat poorly drained to very poorly drained area that is at least two <br /> drainage classes wetter than the named soils in the surrounding map unit. <br /> Wilting point(or permanent wilting point) <br /> The moisture content of soil, on an ovendry basis, at which a plant (specifically <br /> a sunflower)wilts so much that it does not recover when placed in a humid, <br /> dark chamber. <br /> Windthrow <br /> The uprooting and tipping over of trees by the wind. <br /> 72 <br />