NITROGEN AND PHOSPHORUS LOSSES IN A RURAL WATERSHED UNDER NO TILLAGE SYSTEM IN SOUTHERN BRAZIL

NITROGEN AND PHOSPHORUS LOSSES IN A RURAL WATERSHED UNDER NO TILLAGE SYSTEM IN SOUTHERN BRAZIL | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 19 August 2025 V1 Latest version Share on NITROGEN AND PHOSPHORUS LOSSES IN A RURAL WATERSHED UNDER NO TILLAGE SYSTEM IN SOUTHERN BRAZIL Authors : Edson Lucas Camilo 0000-0001-8170-0866 , Miguel Fuentes-Guevara , Nerilde Favaretto 0000-0002-7405-8358 , Luciane Lemos do Prado , Cristiano A. Pott , and Marcelo Müller [email protected] Authors Info & Affiliations https://doi.org/10.22541/au.175558726.63023085/v1 280 views 132 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Intensive production is sought by farmers but may harm sustainability, depending on management practices. No-Tillage System (NTS) is a conservation system and a paradigm in grain production in Brazil, but the quality of adoption is under question whilst water erosion regained strength, an underestimated issue among farmers. This study evaluated concentrations and losses of nitrogen (N) and phosphorus (P) fractions in streamwater of a rural watershed under NTS without terraces. Water was sampled daily, from December 2022 to November 2023, and losses were associated with monetary costs to replenish nutrients. Particulate forms predominated for N and P. Soluble N-NO 3 - prevailed over N-NH 4 + , but concentrations of both remained below critical environmental limit (CEL) for Brazil, while total P frequently exceeded CEL. Concentrations of N and P oscillated seasonally. The highest N losses were in October and November, and P losses peaked in August, October, and November, associated with heavy rainfall and/or low vegetative cover. Annual losses of 30.80 kg N ha -1 and 4.91 kg P ha -1 generated monetary losses of US$ 22.58 ha -1 and US$ 4.85 ha -1 , respectively. The predominance of particulate N and P and the excess of total P in streamwater proved that NTS had limited effectiveness to control surface runoff without complementary practices. P losses represented eutrophication risk and, along with N losses, caused monetary impact at watershed scale, which may help enlighten farmers on the need for additional conservation practices, such as infiltration terraces and cover crops during fallow periods. Supplementary Material File (artigo_qualidade_agua_certo_final.docx) Download 7.71 MB Information & Authors Information Version history V1 Version 1 19 August 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords erosion eutrophication risk nutrients runoff control soil and water conservation Authors Affiliations Edson Lucas Camilo 0000-0001-8170-0866 Universidade Estadual do Centro-Oeste View all articles by this author Miguel Fuentes-Guevara Universidade Estadual do Centro-Oeste View all articles by this author Nerilde Favaretto 0000-0002-7405-8358 Universidade Federal do Parana View all articles by this author Luciane Lemos do Prado Universidade Federal do Parana View all articles by this author Cristiano A. Pott Universidade Estadual do Centro-Oeste View all articles by this author Marcelo Müller [email protected] Universidade Estadual do Centro-Oeste View all articles by this author Metrics & Citations Metrics Article Usage 280 views 132 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Edson Lucas Camilo, Miguel Fuentes-Guevara, Nerilde Favaretto, et al. NITROGEN AND PHOSPHORUS LOSSES IN A RURAL WATERSHED UNDER NO TILLAGE SYSTEM IN SOUTHERN BRAZIL. Authorea . 19 August 2025. DOI: https://doi.org/10.22541/au.175558726.63023085/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . Format Please select one from the list RIS (ProCite, Reference Manager) EndNote BibTex Medlars RefWorks Direct import Tips for downloading citations document.getElementById('citMgrHelpLink').addEventListener('click', function() { popupHelp(this.href); return false; }); $(".js__slcInclude").on("change", function(e){ if ($(this).val() == 'refworks') $('#direct').prop("checked", false); $('#direct').prop("disabled", ($(this).val() == 'refworks')); }); View Options View options PDF View PDF Figures Tables Media Share Share Share article link Copy Link Copied! Copying failed. 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