2024 Perović, Marija Obradović, Vesna fertilizers, surface water, nitrates, nitrogen transformation. With the global population on the rise, there is an increasing demand for food and water, prompting the need for intensified development of modern agricultural practices and proper water management. This population growth leads to higher water consumption and a greater volume of water requiring purification. Consequently, the increased agricultural production and wastewater generation contribute to higher nitrogen compound loads in water bodies. While fertilizer application is crucial for achieving high crop yields and quality products, its inadequate implementation presents various challenges. Moreover, the lack or insufficient functionality of wastewater treatment plants results in a significant amount of untreated wastewater reaching water bodies. This study focuses on investigating the impact of nitrogen compound pressures from various sources on the prevalence of nitrogen compounds in selected surface water bodies. The research aims to assess the extent of nitrogen compound contamination and identify the range of nitrogen compounds present in surface water bodies. By examining their correlation, the origin and transformation processes of nitrogen in the stream can be understood. The findings incorporate data from a five-year monitoring period of two rivers in Serbia – the Sava, and Velika Morava. These results contribute to a better understanding of nitrogen pressures on surface water quality, thus facilitating the development of strategies for sustainable agricultural practices and effective water resource management. XV International Scientific Agricultural Symposium “Agrosym 2024” startpage: 1027 endpage: 1032 All rights reserved Assessing the influence of nitrogen pressure on nitrogen compound levels and composition in selected surface water bodies Faculty of Agriculture, East Sarajevo eng info:eu-repo/semantics/conferenceProceedings https://unilib.phaidrabg.rs/o:6322 ISBN: 978-99976-816-8-3 application/pdf 774740 bytes