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Maize transpiration in response to meteorological conditions

In: Contributions to Geophysics and Geodesy, vol. 43, no. 3
Jana Klimešová - Hana Středová - Tomáš Středa
Detaily:
Rok, strany: 2013, 225 - 236
Kľúčové slová:
transpiration, sap flow, stem heat balance, soil moisture, meteorological elements
O článku:
Differences in transpiration of maize (Zea mays L.) plants in four soil moisture regimes were quantified in a pot experiment. The transpiration was measured by the "Stem Heat Balance" method. The dependence of transpiration on air temperature, air humidity, global solar radiation, soil moisture, wind speed and leaf surface temperature were quantified. Significant relationships among transpiration, global radiation and air temperature (in the first vegetation period in the drought non-stressed variant, r = 0.881**, r = 0.934**) were found. Conclusive dependence of transpiration on leaf temperature (r = 0.820**) and wind speed (r = 0.710**) was found. Transpiration was significantly influenced by soil moisture (r = 0.395**, r = 0.528**) under moderate and severe drought stress. The dependence of transpiration on meteorological factors decreased with increasing deficiency of water. Correlation between transpiration and plant dry matter weight (r = 0.997**), plant height (r = 0.973**) and weight of corn cob (r = 0.987**) was found. The results of instrumental measuring of field crops transpiration under diverse moisture conditions at a concurrent monitoring of the meteorological elements spectra are rather unique. These results will be utilized in the effort to make calculations of the evapotranspiration in computing models more accurate.

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Ako citovať:
ISO 690:
Klimešová, J., Středová, H., Středa, T. 2013. Maize transpiration in response to meteorological conditions. In Contributions to Geophysics and Geodesy, vol. 43, no.3, pp. 225-236. 1338-0540.

APA:
Klimešová, J., Středová, H., Středa, T. (2013). Maize transpiration in response to meteorological conditions. Contributions to Geophysics and Geodesy, 43(3), 225-236. 1338-0540.