Suitability of Black Soldier Fly Frass as Soil Amendment and Implication for Organic Waste Hygienization
Because of its nutritious properties, the black soldier fly has emerged as one of the most popular species in advancing circular economy through the re-valorization of anthropogenic organic wastes to insect biomass. Black soldier fly frass accumulates as a major by-product in artificial rearing set-...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-10-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/10/10/1578 |
| _version_ | 1797550818232107008 |
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| author | Thomas Klammsteiner Veysel Turan Marina Fernández-Delgado Juárez Simon Oberegger Heribert Insam |
| author_facet | Thomas Klammsteiner Veysel Turan Marina Fernández-Delgado Juárez Simon Oberegger Heribert Insam |
| author_sort | Thomas Klammsteiner |
| collection | DOAJ |
| description | Because of its nutritious properties, the black soldier fly has emerged as one of the most popular species in advancing circular economy through the re-valorization of anthropogenic organic wastes to insect biomass. Black soldier fly frass accumulates as a major by-product in artificial rearing set-ups and harbors great potential to complement or replace commercial fertilizers. We applied frass from larvae raised on different diets in nitrogen-equivalent amounts as soil amendment, comparing it to NH<sub>4</sub>NO<sub>3</sub> fertilizer as a control. While the soil properties did not reveal any difference between mineral fertilizer and frass, principal component analysis showed significant differences that are mainly attributed to nitrate and dissolved nitrogen contents. We did not find significant differences in the growth of perennial ryegrass between the treatments, indicating that frass serves as a rapidly acting fertilizer comparable to NH<sub>4</sub>NO<sub>3</sub>. While the abundance of coliform bacteria increased during frass maturation, after application to the soil, they were outcompeted by gram-negatives. We thus conclude that frass may serve as a valuable fertilizer and does not impair the hygienic properties of soils. |
| first_indexed | 2024-03-10T15:35:50Z |
| format | Article |
| id | doaj.art-baea8d3dfaa944e8b14fb08250bd4ecc |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-10T15:35:50Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-baea8d3dfaa944e8b14fb08250bd4ecc2023-11-20T17:17:11ZengMDPI AGAgronomy2073-43952020-10-011010157810.3390/agronomy10101578Suitability of Black Soldier Fly Frass as Soil Amendment and Implication for Organic Waste HygienizationThomas Klammsteiner0Veysel Turan1Marina Fernández-Delgado Juárez2Simon Oberegger3Heribert Insam4Department of Microbiology, University of Innsbruck, Technikerstraße 25d, 6020 Innsbruck, AustriaDepartment of Soil Science and Plant Nutrition, Bingöl University, Selahaddin-I Eyyubi, Üniversite Caddesi, 12000 Bingöl, TurkeyDepartment of Microbiology, University of Innsbruck, Technikerstraße 25d, 6020 Innsbruck, AustriaDepartment of Microbiology, University of Innsbruck, Technikerstraße 25d, 6020 Innsbruck, AustriaDepartment of Microbiology, University of Innsbruck, Technikerstraße 25d, 6020 Innsbruck, AustriaBecause of its nutritious properties, the black soldier fly has emerged as one of the most popular species in advancing circular economy through the re-valorization of anthropogenic organic wastes to insect biomass. Black soldier fly frass accumulates as a major by-product in artificial rearing set-ups and harbors great potential to complement or replace commercial fertilizers. We applied frass from larvae raised on different diets in nitrogen-equivalent amounts as soil amendment, comparing it to NH<sub>4</sub>NO<sub>3</sub> fertilizer as a control. While the soil properties did not reveal any difference between mineral fertilizer and frass, principal component analysis showed significant differences that are mainly attributed to nitrate and dissolved nitrogen contents. We did not find significant differences in the growth of perennial ryegrass between the treatments, indicating that frass serves as a rapidly acting fertilizer comparable to NH<sub>4</sub>NO<sub>3</sub>. While the abundance of coliform bacteria increased during frass maturation, after application to the soil, they were outcompeted by gram-negatives. We thus conclude that frass may serve as a valuable fertilizer and does not impair the hygienic properties of soils.https://www.mdpi.com/2073-4395/10/10/1578animal feedstuffcircular economyfertilizergreenhouseinsect larvaorganic waste |
| spellingShingle | Thomas Klammsteiner Veysel Turan Marina Fernández-Delgado Juárez Simon Oberegger Heribert Insam Suitability of Black Soldier Fly Frass as Soil Amendment and Implication for Organic Waste Hygienization Agronomy animal feedstuff circular economy fertilizer greenhouse insect larva organic waste |
| title | Suitability of Black Soldier Fly Frass as Soil Amendment and Implication for Organic Waste Hygienization |
| title_full | Suitability of Black Soldier Fly Frass as Soil Amendment and Implication for Organic Waste Hygienization |
| title_fullStr | Suitability of Black Soldier Fly Frass as Soil Amendment and Implication for Organic Waste Hygienization |
| title_full_unstemmed | Suitability of Black Soldier Fly Frass as Soil Amendment and Implication for Organic Waste Hygienization |
| title_short | Suitability of Black Soldier Fly Frass as Soil Amendment and Implication for Organic Waste Hygienization |
| title_sort | suitability of black soldier fly frass as soil amendment and implication for organic waste hygienization |
| topic | animal feedstuff circular economy fertilizer greenhouse insect larva organic waste |
| url | https://www.mdpi.com/2073-4395/10/10/1578 |
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