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STRATEGIES FOR MONITORING PLANT WATER STRESS
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Viliam Barek; Jan Horak; Dusan Igaz; Oliver Obrocnik; Vladimir Kiss
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10.5593/sgem2023/3.1
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1314-2704
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English
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23
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3.1
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• Prof. DSc. Oleksandr Trofymchuk, UKRAINE
• Prof. Dr. hab. oec. Baiba Rivza, LATVIA |
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One of the main lines of research on the impact of climate change is the study of drought and its effects on agricultural production. The aim of this study is to determine the key parameter of plant expression in relation to water stress and soil hydrophysical properties, thereby more accurately determining the need for real-time soil profile water enhancement. The research was conducted from 2019 to 2021 at the Nove Zamky experimental site, with research on royal walnut (Juglans regia L.) During the study, we closely monitored changes in branch and stem diameters of the plants using DD-S dendrometers (Ecomatic), sap flow rate was monitored using the Dynagage Trunk Gages system (Dynamax), and leaf spectral response was measured using the ASD system (FieldSpec). The values obtained were then compared with soil moisture, rainfall and air temperature data for the two irrigation treatments. The effect of water stress in the nonirrigated variants is not only to change the intensity of biomass growth in stems and branches, but also to reduce the volume of existing tissue. This change is also closely linked to changes in sap flow rate, which was also statistically confirmed in this study. Water stress reduces water uptake by the roots and decreases the sap flow rate; the tissue in the stems and branches becomes insufficiently hydrated, leading to less diameter growth than in the case of irrigated plants.
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conference
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Proceedings of 23rd International Multidisciplinary Scientific GeoConference SGEM 2023
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23rd International Multidisciplinary Scientific GeoConference SGEM 2023, 03 - 09 July, 2023
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Proceedings Paper
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STEF92 Technology
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International Multidisciplinary Scientific GeoConference SGEM
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SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Russian Acad Arts; Turkish Acad Sci.
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273-280
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03 - 09 July, 2023
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website
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9156
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dendrological changes, sap flow, vegetation index, water stress, irrigation
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