The Permanent Wilting Percentage Is the Percentage Of

The permanent wilting percentage is the percentage of:

A) colloidal particles remaining in the soil after a heavy rain.
B) colloidal particles that would cause irreversible wilting.
C) colloidal particles that would cause reversible wilting.
D) water remaining in a soil when irreversible wilting occurs.
E) water remaining in a soil when reversible wilting occurs.