Editing Fertilizer (section)

===Regulation===
In Europe, problems with high nitrate concentrations in runoff are being addressed by the European Union's Nitrates Directive.<ref>{{cite web|last=European Union|title=Nitrates Directive|date=15 January 2024 |url=http://ec.europa.eu/environment/water/water-nitrates/index_en.html}}</ref> Within [[Great Britain|Britain]], farmers are encouraged to manage their land more sustainably in 'catchment-sensitive farming'.<ref>{{cite web|last=Defra|title=Catchment-Sensitive Farming|url=http://www.defra.gov.uk/food-farm/land-manage/nitrates-watercourses/csf/|url-status=dead|archive-url=https://web.archive.org/web/20110630000845/http://www.defra.gov.uk/food-farm/land-manage/nitrates-watercourses/csf/|archive-date=30 June 2011}}</ref> In the [[United States|US]], high concentrations of nitrate and phosphorus in runoff and drainage water are classified as nonpoint source pollutants due to their diffuse origin; this pollution is regulated at the state level.<ref>{{cite web|title=Polluted Runoff: Nonpoint Source Pollution|url=http://water.epa.gov/polwaste/nps/|publisher=EPA|access-date=23 July 2014}}</ref> [[Oregon]] and [[Washington (state)|Washington]], both in the United States, have fertilizer registration programs with on-line databases listing chemical analyses of fertilizers.<ref>{{cite web |url=http://agr.wa.gov/PestFert/Fertilizers/ProductDatabase.aspx |title=Washington State Dept. of Agriculture Fertilizer Product Database |publisher=Agr.wa.gov |date=23 May 2012 |access-date=17 June 2012 |archive-date=30 October 2013 |archive-url=https://web.archive.org/web/20131030002056/http://agr.wa.gov/PestFert/Fertilizers/ProductDatabase.aspx |url-status=dead }}</ref><ref>{{cite web |url=http://www.regulatory-info-sc.com/ |title=Metals Content for Fertilizer and Soil Amendment Products |website=regulatory-info-sc.com |access-date=21 July 2022}}</ref> [[Carbon emission trading]] and [[eco-tariff]]s affect the production and price of fertilizer.<ref name="w421">{{cite journal | last1=Habib | first1=Mehvish | last2=Singh | first2=Sakshi | last3=Bist | first3=Yograj | last4=Kumar | first4=Yogesh | last5=Jan | first5=Kulsum | last6=Bashir | first6=Khalid | last7=Jan | first7=Shumaila | last8=Saxena | first8=D.C. | title=Carbon pricing and the food system: Implications for sustainability and equity | journal=Trends in Food Science & Technology | volume=150 | date=2024 | doi=10.1016/j.tifs.2024.104577 | page=104577}}</ref>