Soil is a reservoir for H20
Field capacity (FC) is the upper limit of water in the soil. Water stops.
Saturation: Max H20, water is flowing freely through soil.
Field capacity is expressed in in/ft or %.
Used to help determine : Plant available water (PAW)
FC is 25% by volume= with in 12′ of Soil, 25% is H20.
3/12=.25 or 25%
or 25%=.25 x 12=3/ft
Permanet wilting point. (PWP)
if PWP is 15.4%, what is PWP in inches per foot.
Three main stages:
Field Capactity ( Soil resevoir is full) and can no longer pull water…
Permanet wilting point-