Definitions for edaphicɪˈdæf ɪk
Random House Webster's College Dictionary
related to or caused by particular soil conditions, as of texture or drainage, rather than physiographic or climatic factors.
Origin of edaphic:
< G edaphisch (1898) < Gk édaph(os) ground, soil + G -isch
relating to, or determined by, conditions of the soil, especially as it relates to biological systems
soil characteristics, such as water content, pH, texture, and nutrient availability, that influence the type and quantity of vegetation in an area
Origin: From ἔδαφος .