Soil water balance in Biđ-Bosut field area

U diplomskom radu je izračunata bilanca oborinske vode u tlu na području Biđ-bosutskog polja primjenom korigirane Palmer-ove i Thornthwaite-ove metode proračuna. Temeljem višegodišnjih klimatskih podataka (1981-2018) s meteorološke postaje Gradište izračunata je referentna evapotranspiracija pomoću kompjuterskog programa CROPWAT. Proračunom bilance oborinske vode metodom Palmer-a utvrđen je manjak vode u semiglejnom tlu kako slijedi: 29,4 mm za pšenicu, 148,1 mm za kukuruz i 199,3 mm za lucernu, dok je manjak vode u amfiglejnom tlu iznosio 36,4 mm za pšenicu, 158,7 mm za kukuruz i 214,5 mm za lucernu. Proračunom bilance oborinske vode u tlu metodom Thornthwaite-a utvrđen je ukupni nedostatak vode koji iznosi 164,5 mm. Radi jednostavnosti za širu primjenu se preporuča primjena Thornthwaite-ove metode proračuna, iako je Palmerova metoda preciznija jer uvažava i hidropedološke značajke tala za koje se obavlja proračun.In the thesis, soil water balance in the area of the BiĊ-Bosut field was calculated using the corrected Palmer and Thornthwaite calculation methods. Based on long-term climate data (1981-2018) from the meteorological station Gradište, the reference evapotranspiration was calculated using the computer program CROPWAT. The calculation of the soil water balance by the Palmer method determined the water deficit in the semi-gley soil as follows: 29.4 mm for wheat, 148.1 mm for corn and 199.3 mm for alfalfa, while the water deficit in the amphiglay soil was 36.4 mm for wheat, 158.7 mm for corn and 214.5 mm for alfalfa. By calculating the rainwater bilance in the soil by the Thornthwaite method, a total water shortage of 164.5 mm was determined. For simplicity for wider application, the application of the Thornthwaite calculation method is recommended, although the Palmer method is more precise because it also takes into account the hydropedological characteristics of the soil for which the calculation is performed