EFFECTS OF FARMLANDS WASTEWATER ON THE CONTENT OF THE ORGANIC SUBSTANCES IN THE STREAM OF DREŽANKA RIVER IN DREŽNICA
Journal Title: Educa, Časopis za obrazovanje, nauku i kulturu - Year 2016, Vol 9, Issue 9
Abstract
River Drežanka springs and flows through the karst valley of Drežnica. Even though this valley is neither vast nor suitable for agriculture, this area has traditionally been an agricultural region. Importance of the Drežanka river for the locals in Drežnica, scarce physical and chemical research as well as influence of agricultural land on the condition of this watercourse, were the reasons to start this particular study. The studies were conducted on five sites along the Drežanka river and encompassed sampling and determining of selected chemical parameters. The defined tests were carried out in two cycles. In each testing cycle, measurings of the selected chemical parametars were performed, including: consumption of KMnO4 , chemical oxygen demand and biochemical oxygen demand. The first cycle of water sampling was performed in the period prior to the treatment of agricultural land (beginning of March), while the second cycle was carried out during the vegetation period of plants and crops (June). The applied methodology is in accordance with EU guidelines. The conducted studies suggest that in the vegetation period of crops an increase in almost all selected chemical parameters of the Drežanka river was noted in comparison to the period prior to tretmant of agricultural land. Therefore, we can conclude that agricultural activities in this area affect the „natural“ condition of Drežanka.
Authors and Affiliations
Sejit Bobar
Keywords
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- EP ID EP198475
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