{"id":30510,"date":"2023-12-28T11:00:37","date_gmt":"2023-12-28T10:00:37","guid":{"rendered":"https:\/\/resoilfoundation.org\/?p=30510"},"modified":"2023-12-27T11:19:12","modified_gmt":"2023-12-27T10:19:12","slug":"cellulose-waste-soil-fertilizers","status":"publish","type":"post","link":"https:\/\/resoilfoundation.org\/en\/circular-bioeconomy\/cellulose-waste-soil-fertilizers\/","title":{"rendered":"New soil fertilizers can be made from pulp waste"},"content":{"rendered":"<h2>Adding biosolids to conventional fertilizers can reduce greenhouse gas emissions and improve soil quality, according to a Canadian study. A circular solution that is good for plants and the environment<\/h2>\n<p style=\"text-align: center;\">by Matteo Cavallito<\/p>\n<p>&nbsp;<\/p>\n<p>Pulp processing waste can be turned into <strong>organic fertilizers<\/strong> capable of replacing at least part of their conventional counterparts, thus reducing the overall environmental impact. This is supported by <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0301479723012628?via%3Dihub\" target=\"_blank\" rel=\"noopener\">research<\/a> from the University of Alberta. The circular solution identified by the scientists would also improve soil and tree health.<\/p>\n<p>According to <strong>Scott Chang<\/strong>, lead author of the study and a professor in the Canadian university&#8217;s Faculty of Agricultural, Biological and Environmental Sciences, quoted in a <a href=\"https:\/\/www.ualberta.ca\/folio\/2023\/12\/applying-pulp-mill-waste-to-soil-could-be-a-win-win-for-environment-and-industry.html\" target=\"_blank\" rel=\"noopener\">statement<\/a>, the findings provide new insights into the effects biosolids could have if they were redirected into the same tree plantations that feed the forestry industry.<\/p>\n<div class='avia-iframe-wrap'>\n<blockquote class=\"wp-embedded-content\" data-secret=\"PuuaA6o2gN\"><p><a href=\"https:\/\/resoilfoundation.org\/en\/articles\/soil-testing-reduces-fertilizer-spending\/\">Deep soil testing reduces fertilizer spending<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;Deep soil testing reduces fertilizer spending&#8221; &#8212; Re Soil Foundation\" src=\"https:\/\/resoilfoundation.org\/en\/articles\/soil-testing-reduces-fertilizer-spending\/embed\/#?secret=MboVnmkC0Q#?secret=PuuaA6o2gN\" data-secret=\"PuuaA6o2gN\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/div>\n<h5>The study on fertilizers<\/h5>\n<p>The investigation, whose findings were published in the Journal of Environmental Management, took place over two years on a 2.4-hectare experimental site of hybrid poplar trees located in <strong>northern Alberta<\/strong>. Researchers compared the effects of three different applications-biosolids, conventional urea-based fertilizers and a combination of both-on emissions of carbon dioxide, methane and nitrous oxide from the soil.<\/p>\n<blockquote><p>&#8220;We found that the addition of biosolids increased <strong>soil CO2 and N2O emissions by 21 and 17%<\/strong>, respectively, while urea addition increased their emissions by 30 and 83%, respectively,&#8221; the study states.<\/p><\/blockquote>\n<p>Moreover, the researchers noted with some surprise how the combined use of the two types of fertilizers had not produced an increase in emissions. &#8220;The addition of urea <strong>did not affect soil CO2 emissions<\/strong> when biosolids were also applied,&#8221; the research says.<\/p>\n<div class='avia-iframe-wrap'>\n<blockquote class=\"wp-embedded-content\" data-secret=\"o1RcIDRR5I\"><p><a href=\"https:\/\/resoilfoundation.org\/en\/articles\/study-emissions-nitrogen-fertilizers\/\">A new project will monitor global nitrogen emissions from fertilizers<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;A new project will monitor global nitrogen emissions from fertilizers&#8221; &#8212; Re Soil Foundation\" src=\"https:\/\/resoilfoundation.org\/en\/articles\/study-emissions-nitrogen-fertilizers\/embed\/#?secret=PseloYiZE9#?secret=o1RcIDRR5I\" data-secret=\"o1RcIDRR5I\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/div>\n<h5>The role of microorganisms<\/h5>\n<p>The study showed how the application of biosolids, either alone or with conventional fertilizers, proves <strong>beneficial for plant growth in the soil<\/strong>. Use of cellulose waste, in particular, increased levels of dissolved organic carbon and microbial biomass capable of decomposing organic matter. All of this promotes the release of nutrients into the soil.<\/p>\n<blockquote><p>In addition, the study points out, &#8220;The addition of biosolids and biosolids + urea increased soil <strong>dissolved organic carbon<\/strong> (DOC) and microbial biomass C (MBC), while urea addition and biosolids + urea addition increased soil inorganic N, available P and denitrifying enzyme activity (DEA).&#8221;<\/p><\/blockquote>\n<p>Moreover &#8220;the CO2 and N2O emissions were positively, while the CH4 emissions were negatively associated with soil DOC, inorganic N, available phosphorus, MBC, microbial biomass N, and DEA. In addition, soil CO2, CH4 and N2O emissions were also strongly associated with soil <strong>microbial community<\/strong> composition.&#8221;<\/p>\n<div class='avia-iframe-wrap'>\n<blockquote class=\"wp-embedded-content\" data-secret=\"APxv2x1lh5\"><p><a href=\"https:\/\/resoilfoundation.org\/en\/articles\/nitrogen-fertilizers-emissions-climate\/\">&#8220;There&#8217;s no Net Zero with nitrogen fertilizers&#8221;, Soil Association says<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;&#8220;There&#8217;s no Net Zero with nitrogen fertilizers&#8221;, Soil Association says&#8221; &#8212; Re Soil Foundation\" src=\"https:\/\/resoilfoundation.org\/en\/articles\/nitrogen-fertilizers-emissions-climate\/embed\/#?secret=KDSDd8Jrwc#?secret=APxv2x1lh5\" data-secret=\"APxv2x1lh5\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/div>\n<h5>Fertilizers in the crosshairs<\/h5>\n<p>The study assumes significance by bringing out a strategy to mitigate the impact of traditional fertilizer use in global soils. In 2021, FAO&#8217;s Global Assessment of Soil Pollution report <a href=\"https:\/\/www.fao.org\/documents\/card\/en\/c\/cb4894en\" target=\"_blank\" rel=\"noopener\">showed<\/a> that in 2018 the Planet&#8217;s soils had absorbed <strong>109 million tons<\/strong> of synthetic nitrogen fertilizers. This came alongside the <a href=\"https:\/\/resoilfoundation.org\/en\/articles\/fao-soil-pollution-network\/\">growing use<\/a>\u00a0\u00a0of pesticides (more 75 percent on a global scale between 2000 and 2017).<\/p>\n<p>The problems, however, are not confined to soils. A <a href=\"https:\/\/bg.copernicus.org\/articles\/19\/3247\/2022\/#section4\" target=\"_blank\" rel=\"noopener\">study<\/a> by a group of scientists at Nagoya University in Japan, for example, showed how nitrogen from the soil is a major contributor to contamination of waterways. And not without consequences.\u201cNitrate is an essential nutrient for plants and phytoplankton,\u201d the authors\u00a0<a href=\"https:\/\/www.nagoya-u.ac.jp\/researchinfo\/result-en\/2022\/10\/20221005-02.html\" target=\"_blank\" rel=\"noopener\">explain<\/a>. \u201cBut excessive\u00a0<strong>nitrate<\/strong>\u00a0levels in streams can damage water quality, cause eutrophication (the over-enrichment of water by nutrients), and pose health risks to animals and humans.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Adding biosolids to conventional fertilizers can reduce greenhouse gas emissions and improve soil quality, according to a Canadian study. A circular solution that is good for plants and the environment<\/p>\n","protected":false},"author":4,"featured_media":30513,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[155,134],"tags":[153,267,220,187,161,237,188,186,208],"class_list":["post-30510","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-circular-bioeconomy","category-articles","tag-best-practice-en","tag-bioeconomia-circolare-en","tag-carbon","tag-climate","tag-composting","tag-organic-matter","tag-research","tag-soil","tag-waste"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>New soil fertilizers can be made from pulp waste<\/title>\n<meta name=\"description\" content=\"Organic fertilizers capable of at least partially replacing their traditional counterparts can be made from wood pulp\" \/>\n<meta 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