| Sažetak | Ciljevi ovog rada bili su utvrditi i usporediti odabrana kemijska svojstva fluvisola pri različitom načinu korištenja zemljišta (povrćarstvo, ratarstvo, livada), te procijeniti stupanj onečišćenja tla potencijalno toksičnim elementima (PTE). Istraživanje je provedeno 2024. godine na OPG-u Svilić u naselju Orubica. Na svakoj lokaciji uzeto je 5 prosječnih uzoraka površinskog horizonta tla (0-30 cm). U prosječnim uzorcima analizirani su: pH, sadržaj ukupnih karbonata i fiziološki aktivnog vapna, količina i karakter humusa, P2O5 i K2O, te ukupne koncentracije bakra, cinka i olova. Signifikantno više pH vrijednosti zabilježene su u tlu oranice, u odnosu na ostale načine korištenja zemljišta (livada i vrt). Sva analizirana tla su srednje karbonatna, uz signifikantno viši sadržaj fiziološki aktivnog vapna u tlu livade (3,9 %) u odnosu na tla pod poljoprivrednom proizvodnjom (3,3 i 2,9 %). Tlo livade ima signifikantno viši sadržaj humusa (4,05 %) u odnosu na poljoprivredna tla (3,19- 2,58 %), a karakter humusa je u svim tlima slabo kiseli. Tla vrta i oranice vrlo bogato su opskrbljena fosforom i imala su signifikantno viši prosječni sadržaj P2O5 (47,3 i 47,2 mg P₂O₅/100 g tla) u odnosu na tlo livade (21,3 mg P₂O₅/100 g tla). Značajno viša prosječna koncentracija K2O utvrđena je u tlima oranične i povrćarske (53, 3 i 44,7 mg K₂O/100 g tla) proizvodnje u odnosu na tlo pod prirodnom vegetacijom (15,9 mg K₂O/100 g tla). Prema Pravilniku o zaštiti poljoprivrednog zemljišta od onečišćenja (NN 71/19), tlo niti jednog načina korištenja zemljišta (livada, vrt, oranica) nije onečišćeno bakrom, cinkom i olovom. |
| Sažetak (engleski) | The objectives of this study were to determine and compare the selected chemical properties of fluvisol in different of land use (vegetable, arable, meadow), and to assess the degree of soil contamination with potentially toxic elements (PTE). The study was conducted in 2024 at OPG Svilić in the settlement of Orubica. At each location, 5 average samples of the surface soil horizon (0-30 cm) were taken. In the average samples pH, content of total carbonates and physiologically active lime, amount and character of humus, P2O5 and K2O, and total concentrations of copper, zinc and lead were analyzed. Significantly higher pH values were recorded in the soil of arable land, compared to other land use methods (meadow and vegetable garden). All analyzed soils are medium calcareous, with a significantly higher content of physiologically active lime in meadow soil (3.9 %) compared to soils under agricultural production (3.3 and 2.9 %). The soil of the meadow has a significantly higher content of humus (4.05 %) compared to agricultural soils (3.19-2.58 %), and the character of the humus is slightly acidic in all soils. The soils of the vegetable garden and arable land were richly supplied with phosphorus and had a significantly higher average content of P₂O₅ (47.3 and 47.2 mg P₂O₅/100 g soil) compared to the meadow soil (21.3 mg P₂O₅/100 g soil). A significantly higher average K2O concentration was found in arable and vegetable soils (53.3 and 44.7 mg K₂O/100 g soil) production compared to soil under natural vegetation (15.9 mg K₂O/100 g soil). According to the Ordinance on the protection of agricultural land from pollution (NN 71/19), the soil of any type of land use (meadow, garden, arable land) were not contaminated with copper, zinc and lead. |
