Greek Letters

a = parameter in the VG retention curve, L-1

ac = contact angle, dimensionless eair = apparent relative dielectric permittivity of air, dimensionless e'm = TDR-measured apparent relative dielectric permittivity of the medium, dimensionless esoil = apparent relative dielectric permittivity of the soil body, dimensionless esolid = apparent relative dielectric permittivity of solids, dimensionless

^water = apparent relative dielectric permittivity of water, dimensionless

9 = volumetric soil water content, dimensionless

6r = residual soil water content, dimensionless

9s = saturated soil water content, dimensionless pb = oven-dry bulk density, M/L3

pw = density of water, M/L3

a = surface tension between wetting and nonwetting fluid phases, F/L

tyg = gravitational potential, L2/T2,or F/L2 or L

tyt = total soil water potential, L2/T2,or F/L2 or L

Was this article helpful?

0 0
Growing Soilless

Growing Soilless

This is an easy-to-follow, step-by-step guide to growing organic, healthy vegetable, herbs and house plants without soil. Clearly illustrated with black and white line drawings, the book covers every aspect of home hydroponic gardening.

Get My Free Ebook


Post a comment