{"id":38314,"date":"2025-02-26T11:00:22","date_gmt":"2025-02-26T10:00:22","guid":{"rendered":"https:\/\/resoilfoundation.org\/articles\/scarti-insetti-fertilizzanti-organici\/"},"modified":"2025-03-02T14:35:46","modified_gmt":"2025-03-02T13:35:46","slug":"insect-waste-organic-fertilizers","status":"publish","type":"post","link":"https:\/\/resoilfoundation.org\/en\/circular-bioeconomy\/insect-waste-organic-fertilizers\/","title":{"rendered":"Insect waste can be a viable alternative to traditional fertilizers"},"content":{"rendered":"<h2>A study from U.S. has highlighted the soil benefits of applying frass, the mix of insect waste products that can be turned in a resource in a circular economy model<\/h2>\n<p style=\"text-align: center;\">di Matteo Cavallito<\/p>\n<p><strong>Insect<\/strong> frass, or the set of their waste products that includes excrement, food remains and mutated skin, could prove to be a particularly valuable circular resource for <strong>improving soil health and fertility<\/strong>. This is suggested by a <a href=\"https:\/\/www.nature.com\/articles\/s41598-025-87075-8\" target=\"_blank\" rel=\"noopener\">study<\/a> published in the journal Scientific Reports and <a href=\"https:\/\/www.earth.com\/news\/future-of-farming-insect-waste-reshapes-soil-health\/\" target=\"_blank\" rel=\"noopener\">quoted<\/a> by the website Earth.com.<\/p>\n<p>The research, conducted by scientists from the <strong>U.S. Department of Agriculture<\/strong> in collaboration with the <strong>University of Arkansas<\/strong>, takes place in a scenario characterized by a growing interest on insects, which are increasingly seen as a source of particularly useful products by the agricultural industry.<\/p>\n<div class='avia-iframe-wrap'>\n<blockquote class=\"wp-embedded-content\" data-secret=\"Xly5j7TNBt\"><p><a href=\"https:\/\/resoilfoundation.org\/en\/articles\/habitat-insects-climate\/\">Habitat diversity helps insects address climate change<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"&#8220;Habitat diversity helps insects address climate change&#8221; &#8212; Re Soil Foundation\" src=\"https:\/\/resoilfoundation.org\/en\/articles\/habitat-insects-climate\/embed\/#?secret=ztJoP9ZJXb#?secret=Xly5j7TNBt\" data-secret=\"Xly5j7TNBt\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/div>\n<h5>Insects are more than just feed<\/h5>\n<p>The use of insects as the basis for the production of protein-rich feed is nothing new. In fact, some products, such as so-called \u201cmini-livestock,\u201d are increasingly used in <strong>animal feed<\/strong>. However, relying using frass as an organic fertilizer as an alternative to traditional synthetic chemicals is a new idea.<\/p>\n<blockquote><p>Unlike traditional manure, <strong>frass is low in pathogens<\/strong> and rich in key elements such as <a href=\"https:\/\/resoilfoundation.org\/en\/articles\/fao-efficient-nitrogen-report\/\" target=\"_blank\" rel=\"noopener\">nitrogen<\/a>, phosphorus and carbon.<\/p><\/blockquote>\n<p>\u201cCarbon contents in insect frass from varying species <strong>range between 24 and 50%<\/strong> whereas in poultry litter C can vary between 36 and 42%,\u201d the study says. \u201cAs an organic fertilizer, insect frass is C-enriched and may build <strong>soil organic matter<\/strong> (SOM), although this has not been tested under field conditions to date.\u201d To test its potential, the scientists then conducted a survey on agricultural land at an experimental center in Fayetteville, Arkansas. The results were stunning.<\/p>\n<div id=\"attachment_38278\" style=\"width: 2018px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-38278\" class=\"size-full wp-image-38278\" src=\"https:\/\/resoilfoundation.org\/wp-content\/uploads\/2025\/02\/insetti-circolari.webp\" alt=\"Cos\u00ec il frass degli insetti pu\u00f2 essere valorizzato in agricoltura secondo una dinamica circolare. Fonte: Ashworth, A.J., Amorim, H.C.S., Drescher, G.L. et al. Insect frass fertilizer as soil amendment for improved forage and soil health in circular systems. Sci Rep 15, 3024 (2025). https:\/\/doi.org\/10.1038\/s41598-025-87075-8 Attribution-NonCommercial-NoDerivatives 4.0 International CC BY-NC-ND 4.0 Deed\" width=\"2008\" height=\"1580\" srcset=\"https:\/\/resoilfoundation.org\/wp-content\/uploads\/2025\/02\/insetti-circolari.webp 2008w, https:\/\/resoilfoundation.org\/wp-content\/uploads\/2025\/02\/insetti-circolari-300x236.webp 300w, https:\/\/resoilfoundation.org\/wp-content\/uploads\/2025\/02\/insetti-circolari-1030x810.webp 1030w, https:\/\/resoilfoundation.org\/wp-content\/uploads\/2025\/02\/insetti-circolari-768x604.webp 768w, https:\/\/resoilfoundation.org\/wp-content\/uploads\/2025\/02\/insetti-circolari-1536x1209.webp 1536w, https:\/\/resoilfoundation.org\/wp-content\/uploads\/2025\/02\/insetti-circolari-1500x1180.webp 1500w, https:\/\/resoilfoundation.org\/wp-content\/uploads\/2025\/02\/insetti-circolari-705x555.webp 705w\" sizes=\"auto, (max-width: 2008px) 100vw, 2008px\" \/><p id=\"caption-attachment-38278\" class=\"wp-caption-text\">Insect frass can be turned in a resource in a circular economy model. Image: Ashworth, A.J., Amorim, H.C.S., Drescher, G.L. et al. Insect frass fertilizer as soil amendment for improved forage and soil health in circular systems. Sci Rep 15, 3024 (2025). https:\/\/doi.org\/10.1038\/s41598-025-87075-8 Attribution-NonCommercial-NoDerivatives 4.0 International CC BY-NC-ND 4.0 Deed<\/p><\/div>\n<h5>Carbon content doubles with use of frass<\/h5>\n<p>After applying both <strong>insect frass<\/strong> and other traditional products including ammonium nitrate to soils, researchers monitored various parameters. The results showed that the use of the soil amendment increased soil fertility, improved microbial activity and seed germination, and enhanced the growth of forage plants.<\/p>\n<blockquote><p>The use of a high dose of frass, the authors explain, <strong>significantly increased<\/strong> carbon, nitrogen, phosphorus, potassium and magnesium content.<\/p><\/blockquote>\n<p>Two years later, in particular, <strong>carbon presence doubled<\/strong> when compared with nitrate-treated soils. <strong>Nitrogen&#8217;s abundance even tripled<\/strong>. Forage yield and quality were similar among soils subjected to the application of the different soil amendments.<\/p>\n<div class='avia-iframe-wrap'>\n<blockquote class=\"wp-embedded-content\" data-secret=\"E6LGyvhw8Z\"><p><a href=\"https:\/\/resoilfoundation.org\/en\/articles\/circular-economy-biobased-industries\/\">Circular bioeconomy, biobased industries need specific codes<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"&#8220;Circular bioeconomy, biobased industries need specific codes&#8221; &#8212; Re Soil Foundation\" src=\"https:\/\/resoilfoundation.org\/en\/articles\/circular-economy-biobased-industries\/embed\/#?secret=yTUUYHJmWQ#?secret=E6LGyvhw8Z\" data-secret=\"E6LGyvhw8Z\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/div>\n<h5>A circular reuse of farming by-products<\/h5>\n<p>In short, the study showed that insect waste products are potentially usable as an alternative to chemical fertilizers. This possibility carries with it an important benefit in view of the <a href=\"https:\/\/resoilfoundation.org\/en\/articles\/nitrogen-fertilizers-emissions-climate\/\" target=\"_blank\" rel=\"noopener\">high environmental and climate impact<\/a> of synthetic fertilizer production. In this way, <strong>circular agricultural strategies<\/strong> can be fostered by better reusing the same by-products of insect farming. A sector which is booming.<\/p>\n<blockquote><p>\u201cWith an <strong>annual growth of 28%<\/strong> and projected market value of <a href=\"https:\/\/www.meticulousresearch.com\/product\/edible-insects-market-5156\" target=\"_blank\" rel=\"noopener\">$18 billion USD<\/a> by 2033, <strong>insect farming<\/strong> industry is expanding in response to an increasing demand for sustainable protein sources for feed and food,\u201d the researchers write.<\/p><\/blockquote>\n<p>\u201cApplication of insect frass can increase soil fertility and nutrient uptake by crops, enhance soil microbial activity, improve seed germination, plant resistance to stress owing to the presence of chitin, and improve crop biomass production compared to commercial and organic fertilizer sources.\u201d These results, they state, have so far been recorded during experiments in controlled environments. Further <strong>on field research<\/strong>, therefore, is now needed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A study from U.S. has highlighted the soil benefits of applying frass, the mix of insect waste products that can be turned in a resource in a circular economy model<\/p>\n","protected":false},"author":4,"featured_media":38317,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[158,155,134],"tags":[190,153,267,220,161,239,188],"class_list":["post-38314","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-agricultural-industry","category-circular-bioeconomy","category-articles","tag-agriculture","tag-best-practice-en","tag-bioeconomia-circolare-en","tag-carbon","tag-composting","tag-crops","tag-research"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ 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