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Untitled - MendelNet 2013 - Mendelova zemědělská a lesnická ...

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MENDELNET <strong>2013</strong>EXPERIMENTAL CHAMBERS FOR AUTOMATIC FUMIGATIONOF PLANTS WITH ELEVATED CO2 CONCENTRATION ANDDROUGHT STRESS INDUCTION WITH THE USEOF RECIRCULATIONRajsner L. 1, 2 , Klem K. 1, 21 Faculty of Forestry and Wood Technology, Mendel University in Brno, Zemedelska 1,613 00 Brno, Czech Republic2 CzechGlobe – Global Change Research Centre AS CR, v.v.i., Bělidla 986/4a, 603 00Brno, Czech RepublicE-mail: rajsner.l@czechglobe.czABSTRACTChambers designed for experimental station Domanínek (near Bystřice nad Pernštejnem), allowprecise control of the CO 2 concentration in the atmosphere inside the chamber using a ventilationsystem with injection of gaseous CO 2 and feedback control based on the ongoing continuousmeasurement of CO 2 from individual chambers using an infrared analyzer. Ventilation of chamberis adjustable in various intensities by opening roof lamellas, and power control of the fan. Thissystem allows maintaining a minimum temperature difference between outside and inside thechamber. The chambers are equipped with unique recirculation system which minimizes CO 2consumption in conditions with minimal heating the air inside the chamber (cloudy, morning,evening). Control of chambers is performed automatically based on signals from the sensors andanalyzers using specially developed software.Key words: elevated CO 2 concentration, drought, chamber, recirculation, fumigationAcknowledgments: The work forms a part of research supported by the European Commission(project CzechGlobe–contract CZ.1.05/1.1.00/02.0073).852 | P age

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