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on the surface of the soil grains and is not capable of significant movement by the
action of gravity or capillary forces
on the surface of the soil grains and is not capable of significant movement by the action of gravity or capillary forces
Hygroscopic water
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 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
Capillary water
part in excess of hygroscopic and capillary water which will readily move out
of the soil if favorable drainage is provided
part in excess of hygroscopic and capillary water which will readily move out of the soil if favorable drainage is provided
Gravitational water
drains quickly from the rootzone under normal drainage conditions
drains quickly from the rootzone under normal drainage conditions
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held too tightly by capillary forces and is generally not accessible to plant roots
held too tightly by capillary forces and is generally not accessible to plant roots
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the difference between gravitational and unavailable water
the difference between gravitational and unavailable water
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the moisture content of soil when gravitational water has been removed
the moisture content of soil when gravitational water has been removed
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the soil-moisture content when plants permanently wilt
the soil-moisture content when plants permanently wilt
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the difference in moisture content of the soil between field capacity and permanent
wilting
the difference in moisture content of the soil between field capacity and permanent wilting
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refer to that portion of the available moisture that is most easily extracted
by plants, approximately 75% of the available moisture
refer to that portion of the available moisture that is most easily extracted by plants, approximately 75% of the available moisture
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