WATER DEFICIT ANALYSIS IN VARIOUS CROPS

U radu se razmatra manjak vode u tlu za područje Zagreba za obradiva tla (tipa: aluvij i semiglej) te za najčešće uzgajane poljoprivredne kulture (silažni kukuruz, kupus, paprika, salata, rajčica, kukuruz, jabuka itd.). Pogodnost tala je određena FAO metodom. Klimatološke karakteristike područja s aspekta navodnjavanja određene su uporabom 20-godišnjih nizova meteoroloških podataka i pedoloških podataka te indeksa faza razvoja biljaka. Referentna evapotranspiracija (ETo) izračunata je prema metodi Penman-Montheitha. Efektivne oborine izračunate su metodom USBR iz vrijednosti srednjih mjesečnih prosječnih oborina kao i iz količine mjesečnih oborina koje su razgraničene donjim kvartilom. Bilanca vode u tlu za svaku kulturu izračunata je prema metodi Palmera. Dobiveni rezultati pokazuju da su potrebe kultura za vodom različite, a ukupni nedostatak vode ovisi o količini i sezonskom rasporedu oborina i hidropedološkim značajkama tala. Za svaku kulturu izračunat je manjak vode za višegodišnji prosjek oborina i za sušne mjesece, koji su razgraničeni donjim kvartilom količine oborine. Može se zaključiti da je navodnjavanje potrebna mjera u uzgoju navedenih kultura na navedenim tipovima tala na području Zagreba.The paper deals with water a deficit in arable soils of the Zagreb region (types: calacaric fluvisol and semigley) and for the most common agricultural crops grown (silage maize, cabbage, bell pepper, lettuce, tomato, maize, apple, etc.). Soil suitability was assessed by the FAO method. Climatological characteristics of the region, from the aspect of irrigation, were assessed using 20-year series of meteorological and pedological data, and indices of plant development stages. Reference evapotranspiration (ETo) was calculated by the Penman-Monteith method. Effective precipitation was calculated by the USBR method from the values of mean monthly average precipitation as well as from the amounts of monthly precipitation, separated by the lower quartile. Palmer’s method was used to calculate soil water balance for each crop. The results show that different crops have different water requirements, the total water deficit depending on the amount and seasonal distribution of precipitation and on the soil hydropedological characteristics. The water deficit was calculated for each crop with respect to the long-term precipitation average as well as for droughty months, separated by the lower quartile of the precipitation amount. It is concluded that irrigation is a necessary measure for the production of the studied crops on the said soil types in the Zagreb region

WATER DEFICIT ANALYSIS IN VARIOUS CROPS

U radu se razmatra manjak vode u tlu za područje Zagreba za obradiva tla (tipa: aluvij i semiglej) te za najčešće uzgajane poljoprivredne kulture (silažni kukuruz, kupus, paprika, salata, rajčica, kukuruz, jabuka itd.). Pogodnost tala je određena FAO metodom. Klimatološke karakteristike područja s aspekta navodnjavanja određene su uporabom 20-godišnjih nizova meteoroloških podataka i pedoloških podataka te indeksa faza razvoja biljaka. Referentna evapotranspiracija (ETo) izračunata je prema metodi Penman-Montheitha. Efektivne oborine izračunate su metodom USBR iz vrijednosti srednjih mjesečnih prosječnih oborina kao i iz količine mjesečnih oborina koje su razgraničene donjim kvartilom. Bilanca vode u tlu za svaku kulturu izračunata je prema metodi Palmera. Dobiveni rezultati pokazuju da su potrebe kultura za vodom različite, a ukupni nedostatak vode ovisi o količini i sezonskom rasporedu oborina i hidropedološkim značajkama tala. Za svaku kulturu izračunat je manjak vode za višegodišnji prosjek oborina i za sušne mjesece, koji su razgraničeni donjim kvartilom količine oborine. Može se zaključiti da je navodnjavanje potrebna mjera u uzgoju navedenih kultura na navedenim tipovima tala na području Zagreba.The paper deals with water a deficit in arable soils of the Zagreb region (types: calacaric fluvisol and semigley) and for the most common agricultural crops grown (silage maize, cabbage, bell pepper, lettuce, tomato, maize, apple, etc.). Soil suitability was assessed by the FAO method. Climatological characteristics of the region, from the aspect of irrigation, were assessed using 20-year series of meteorological and pedological data, and indices of plant development stages. Reference evapotranspiration (ETo) was calculated by the Penman-Monteith method. Effective precipitation was calculated by the USBR method from the values of mean monthly average precipitation as well as from the amounts of monthly precipitation, separated by the lower quartile. Palmer’s method was used to calculate soil water balance for each crop. The results show that different crops have different water requirements, the total water deficit depending on the amount and seasonal distribution of precipitation and on the soil hydropedological characteristics. The water deficit was calculated for each crop with respect to the long-term precipitation average as well as for droughty months, separated by the lower quartile of the precipitation amount. It is concluded that irrigation is a necessary measure for the production of the studied crops on the said soil types in the Zagreb region

PannEx: The Pannonian Basin Experiment

The almost closed structure of the Pannonian Basin makes it an exceptional natural laboratory for the study of the water and energy cycles, focusing on the physical processes of relevance. The Pannonian Basin Experiment, under the umbrella of the Global Energy and Water Exchanges project of the World Climate Research Programme, aims to achieve a better understanding of the Earth System components and their interactions in the Pannonian Basin. The scientific basis of the PannEx supports research that can better translate and deliver relevant climate data, information and knowledge for societal decision making through the national hydro-meteorological and climate services, research institutes and universities. We outline the framework for the development of the PannEx in the light of international efforts to provide scientific support and involve international research community in integrated approach towards identifying and increasing adaptation capacity in the face of climate change in the Pannonian Basin. As such, PannEx dedicated observational and modeling efforts also strive to reach results with the global impact. © 2018 The Author