When.com Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. Transpiration - Wikipedia

    en.wikipedia.org/wiki/Transpiration

    Transpiration rates of plants can be measured by a number of techniques, including potometers, lysimeters, porometers, photosynthesis systems and thermometric sap flow sensors. Isotope measurements indicate transpiration is the larger component of evapotranspiration . [ 11 ]

  3. Transpirational cooling (biological) - Wikipedia

    en.wikipedia.org/wiki/Transpirational_cooling...

    Transpiration is the movement of water through a plant and out of its leaves and other aerial parts into the atmosphere. This movement is driven by solar energy. [ 4 ] In the tallest trees, such as Sequoia sempervirens , the water rises well over 100 metres from root-tip to canopy leaves.

  4. Evapotranspiration - Wikipedia

    en.wikipedia.org/wiki/Evapotranspiration

    Transpiration: the movement of water from root systems, through a plant, and exit into the air as water vapor. This exit occurs through stomata in the plant. Rate of transpiration can be influenced by factors including plant type, soil type, weather conditions and water content, and also cultivation practices. [ 6 ] :

  5. Ecophysiology - Wikipedia

    en.wikipedia.org/wiki/Ecophysiology

    In very dry soil, plants close their stomata to reduce transpiration and prevent water loss. The closing of the stomata is often mediated by chemical signals from the root (i.e., abscisic acid ). In irrigated fields, the fact that plants close their stomata in response to drying of the roots can be exploited to 'trick' plants into using less ...

  6. Water cycle - Wikipedia

    en.wikipedia.org/wiki/Water_cycle

    A recent global study using water stable isotopes, however, shows that not all soil moisture is equally available for groundwater recharge or for plant transpiration. [13] Percolation: Water flows vertically through the soil and rocks under the influence of gravity. Precipitation: Condensed water vapor that falls to the Earth's surface.

  7. Transpiration stream - Wikipedia

    en.wikipedia.org/wiki/Transpiration_stream

    Transpiration can be regulated through stomatal closure or opening. It allows for plants to efficiently transport water up to their highest body organs, regulate the temperature of stem and leaves and it allows for upstream signaling such as the dispersal of an apoplastic alkalinization during local oxidative stress. Summary of water movement: Soil

  8. Water-use efficiency - Wikipedia

    en.wikipedia.org/wiki/Water-use_efficiency

    However, there is some question as to the benefit of increased water-use efficiency of plants in agricultural systems, as the processes of increased yield production and decreased water loss due to transpiration (that is, the main driver of increases in water-use efficiency) are fundamentally opposed.

  9. Soil moisture - Wikipedia

    en.wikipedia.org/wiki/Soil_moisture

    At that suction the plant cannot sustain its water needs as water is still being lost from the plant by transpiration, the plant's turgidity is lost, and it wilts, although stomatal closure may decrease transpiration and thus may retard wilting below the wilting point, in particular under adaptation or acclimatization to drought. [32]