Hidrológiai Közlöny, 2017 (97. évfolyam)
2017 / 3. szám - MANAGING WATER QUALITY (ONGOING PROJECTS AND FUTURE CHALLENGES) - Rehák, Štefan - Vranovská, Andrea - Adam, Štefan - Kopčová, Ľubica: Hydrological balance of water resources for agriculture in the Slovakian part of the Danube Region
57 Stefan Rehák: Hydrological balance of water resources for agriculture in the Slovakian part of the Danube Region CONCLUSION Water as a non-alternative production factor significantly affects the stability and production of agro-ecosystems in agricultural production areas. Relative evapotranspiration and evapotranspiration deficit (Eo-E) make it possible to quantify insufficient water amount in the soil for the optimal growth of crops. Thus, it is possible to determinate the amount of water needed in agricultural production areas or in irrigation areas. So-called relative evapotranspiration (E/Eo) was chosen as the value to identify irrigation areas. The extension of irrigation systems in the main irrigation areas will be a primary adaptation measure for the mitigation of the negative impact of climate change. A prognosis of irrigation water demand is prepared for each main irrigation area in Slovakia, including the average simulated necessary amount of irrigation water and the status of irrigation size for the time horizons till 2030 and 2075. In the currently prepared prognosis for water management balance, irrigation water demand is calculates on the basis of the scenario CCCM for the horizons 2030 and 2075. The above-mentioned prognoses for the years 2030 and 2075 indicate that dry periods will not be expected in the Danube and Morava basins; however, there will be insufficient amount of water in the IpeT and Nitra basins in the summer months. The scenario for the year 2075 indicates that related river basins will suffer from the lack of water not only in the summer months (IpeT river basin in April-September and Nitra river basin in May- September). The basins of the rivers Bodrog, Hron, Slaná and Váh (scenario for the years 2030 and 2075 - table 3 and 4) will be affected by drought mainly in summer. When planning agricultural production, it is necessary to take these scenarios into consideration in the future. An increased demand for irrigation water could be met by introducing new irrigation methods with the focus on irrigation efficiency and water saving. Despite the technical progress in irrigation, the water demands of field crops can only be partially met because of limited disposable water resources for irrigation in some river basins in Slovakia. This will inevitably create the need for building new water resources, such as small water reservoirs. BIBLIOGRAPHY Alena ./., Takác J., Sobocky I., Hríbik J. (2005). Pre- biehajúca klimatická zmena ajej dopady na rozvoj spolocnosti. Dősledky klimatickej zmeny v oblasti zá- vlahového hospodárstva. Záverecná správa ciastkovej úlohy 03“ Uloha státneho programú vyskumu a vyvoja: Aktuálne otázky rozvoja spolocnosti. Hydromeliorácie, Bratislava. 85 s. Buday S., VilcekJ. (2013). Kategorizácia a hodnoten- ie pol’nohospodárskych pozemkov na Slovensku, ISBN 978-80-7375-789-2, Mendelová Univerzita v Bme. Fekete, V. (1985). Prehodnotenie bilancnych profilov SVHB a MQ. VÚVH Bratislava. 50 p. Fekete, V. (1990). Stanovenie MQ, QZ, a QR v bilancnych profiloch SVHB, Záverecná správa úlohy R 05-531-162.03.07, VÚVH, Bratislava. Fekete, V. (2013). Vyhl’adová VHB mnozstva a kvality povrchovej vody k casovému horizontú 2021 vrátane prehodnotenia vyhl’adovych vodnych nádrzí, VÚVH Bratislava. Rehák S. (1994). Postavenie závlah v ekosystéme pol’nohospodársky vyuzívanej krajiny. In: Moznosti zvysovania úcinnosti závlah. Bratislava. VÚZH aVSP Nitra, pp. 198-200. Sátor, J., M. Gombos, R. Matt (2007). Pődne sucho - fenomén klimatickej zmeny. In: .Zb. 7. Konferencie s medzinárodnou úcast’ou "Vplyv vodohospodárskych stavieb na tvorbu a ochranu zivotného prostredia (ed. R. Cabadaj). 24-26. 10. 2007, Podbánske, ISBN 978-80227- 2729-7, pp.223-234. THE AUTHORS STEFAN REHÁK graduated from the Faculty of Natural Sciences of the Comenius University in Bratislava with the specialization on hydrology, climatology and pedology. His post-graduate studies focused on agriculture and forest sciences. Currently he is the director of the Department of Concepts, Programmes and Water Planning at the Water Research Institute in Bratislava. He also works at the Faculty of Natural Sciences of the Comenius University in Bratislava as an associate professor, he teaches soil hydrology and deals with researching the processes taking place at the borders of physical systems: atmosphere - vegetation - relief - soil aeration zone - ground water within the landscape system. He is the author of monographs in the field of water management of landscape and irrigation. ANDREA VRANOVSKÁ is a hydrogeologist, who graduated from the Comenius University, Faculty of Natural Sciences. She previously focused on hydrogeology in the geological service, depollution technology of groundwater and soil in situ (especially on fuel-caused pollution), then she concentrated on geothermal energy utilisation. She has worked in the team of geothermal wells projection, reservoir engineering and hydrogeological evaluation of geothermal reservoirs. At present she works at the Water Research Institute where she deals with projects focusing on the Water Framework Directive implementation in EU accession countries and the implementation of the actions of Priority Area 4 (Water Quality) of the EU Strategy for the Danube Region. STEFAN ADAM is the director of the National Agricultural and Food Centre - Research Institute of Agricultural and Food Economics located in Bratislava. He graduated from the Slovak University of Agriculture in Nitra, Faculty of Agricultural Engineering. He began his career at a poultry processing plant in Levice. Before joining RIAFE, Mr. Adam spent more than 17 years in government service and he also worked in a self-government organisation of farmers. He served as state secretary of the Ministry of Agriculture and Rural Development of the SR from 2012 to 2014. Between 2015 and 2017, he served as First Secretary
