BioScience Dictionary

 
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Found Histic epipedon 1 time.

Displaying results 1 to 10.

1. Histic epipedon
An 8- to 16-inch soil layer at or near the surface that is saturated for 30 consecutive days or more during the growing season in most years and contains a minimum of 20 percent organic matter when no clay is present or a minimum of 30 percent organic matter when 60 percent or more clay is present; generally a thin horizon of peat or muck if the soil has not been plowed.