Hydraulic Lift. UNI Plant Physiology Spring 2010. Observations I. Deep and shallow roots (or deep roots only). Shallow roots. www.sustland.umn.edu. http://pubs.caes.uga.edu/caespubs/pubcd/B1073-w/B1073-17.gif. Observations II.
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UNI Plant Physiology
Deep and shallow roots(or deep roots only)
Light and temperature increase, stomata open, and transpiration begins.
Water is pulled up the trunk from the roots.
Shallow rooted plants transpire, with water moving from surface soil to roots.
Transpiration stops in the shallow rooted plant.
Water moves into surface roots from surface soil.
As transpiration continues, the surface soil dries out.
Water moves into the roots from the soil.
Transpiration stops when light levels decrease.
Hours later, the surface soil has been rehydrated via the roots.
Water moves from the wet roots to the dry surface soil.
Groundwater moves into deeper roots.