Soil Particle Description Quiz

on the surface of the soil grains and is not capable of significant movement by the action of gravity or capillary forces

part in excess of the hygroscopic water which exists in the pore space of the soil and is retained against the force of gravity in a soil that permits unobstructed drainage

part in excess of hygroscopic and capillary water which will readily move out of the soil if favorable drainage is provided

drains quickly from the rootzone under normal drainage conditions

held too tightly by capillary forces and is generally not accessible to plant roots

the difference between gravitational and unavailable water

the moisture content of soil when gravitational water has been removed

the soil-moisture content when plants permanently wilt

the difference in moisture content of the soil between field capacity and permanent wilting

refer to that portion of the available moisture that is most easily extracted by plants, approximately 75% of the available moisture