Vermicompost enrichment using organic wastes: Nitrogen content and mineralization
<strong>Purpose</strong> This study performed a feasibility assessment of nitrogen enrichment by some organic wastes through vermicomposting as well as its release as a bioavailable form over time.<br /> <strong>Methods</strong> Soybean and canola wastes as well as the...
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| Format: | Article |
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OICC Press
2020-06-01
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| Series: | International Journal of Recycling of Organic Waste in Agriculture |
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| Online Access: | http://ijrowa.khuisf.ac.ir/article_672376_69a4f2a930ee25e3a32956e76b4f50d5.pdf |
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| author | Ali Askari Ali Khanmirzaei Shekoofeh Rezaei |
| author_facet | Ali Askari Ali Khanmirzaei Shekoofeh Rezaei |
| author_sort | Ali Askari |
| collection | DOAJ |
| description | <strong>Purpose</strong> This study performed a feasibility assessment of nitrogen enrichment by some organic wastes through vermicomposting as well as its release as a bioavailable form over time.<br /> <strong>Methods</strong> Soybean and canola wastes as well as the dairy blood powder of industrial slaughterhouse were used as organic wastes to enrich the vermicompost. Composted materials were incubated for nitrogen mineralization kinetic assessment by adjusting moisture content to 50% at 30 ˚C for 80 days. During the incubation, moisture was maintained by weighing. Subsamples were collected after 1, 5, 10, 20, 40, 60, and 80 days of incubation.<br /> <strong>Results</strong> Among the treatments, those for 25% dairy blood powder contained the highest nitrogen content (4.95 and 3.70% for chicken and cow blood powder, respectively). Nitrogen mineralization through 80 days of incubation ranged from 2.23% (for 50% canola waste treatment) to 2.57% (for 25% blood powder) of the total nitrogen. The mineralization rate ranged from 4.24 and 3.62 mg kg<sup>-1</sup> day<sup>-1</sup> for the compost containing 25% chicken and cow blood powder, respectively, to 0.94 and 0.84 mg kg<sup>-1</sup> day<sup>-1</sup> in canola and soybean waste, respectively, whereas those for the control treatment equaled 0.81 mg kg<sup>-1</sup> day<sup>-1</sup>.<br /> <strong>Conclusion</strong> Composts containing 25% blood powder were acceptable in terms of quantity and nitrogen release over time, and can serve as a reliable source of available nutrients in the soil. |
| format | Article |
| id | doaj-art-ae3b30194bd7491ba451d3a3b6bdd750 |
| institution | Kabale University |
| issn | 2195-3228 2251-7715 |
| language | English |
| publishDate | 2020-06-01 |
| publisher | OICC Press |
| record_format | Article |
| series | International Journal of Recycling of Organic Waste in Agriculture |
| spelling | doaj-art-ae3b30194bd7491ba451d3a3b6bdd7502025-02-03T10:42:39ZengOICC PressInternational Journal of Recycling of Organic Waste in Agriculture2195-32282251-77152020-06-019215116010.30486/ijrowa.2020.1885015.1001672376Vermicompost enrichment using organic wastes: Nitrogen content and mineralizationAli Askari0Ali Khanmirzaei1Shekoofeh Rezaei2Department of Soil Science, Karaj Branch, Islamic Azad University, Karaj, IranDepartment of Soil Science, Karaj Branch, Islamic Azad University, Karaj, IranDepartment of Soil Science, Karaj Branch, Islamic Azad University, Karaj, Iran<strong>Purpose</strong> This study performed a feasibility assessment of nitrogen enrichment by some organic wastes through vermicomposting as well as its release as a bioavailable form over time.<br /> <strong>Methods</strong> Soybean and canola wastes as well as the dairy blood powder of industrial slaughterhouse were used as organic wastes to enrich the vermicompost. Composted materials were incubated for nitrogen mineralization kinetic assessment by adjusting moisture content to 50% at 30 ˚C for 80 days. During the incubation, moisture was maintained by weighing. Subsamples were collected after 1, 5, 10, 20, 40, 60, and 80 days of incubation.<br /> <strong>Results</strong> Among the treatments, those for 25% dairy blood powder contained the highest nitrogen content (4.95 and 3.70% for chicken and cow blood powder, respectively). Nitrogen mineralization through 80 days of incubation ranged from 2.23% (for 50% canola waste treatment) to 2.57% (for 25% blood powder) of the total nitrogen. The mineralization rate ranged from 4.24 and 3.62 mg kg<sup>-1</sup> day<sup>-1</sup> for the compost containing 25% chicken and cow blood powder, respectively, to 0.94 and 0.84 mg kg<sup>-1</sup> day<sup>-1</sup> in canola and soybean waste, respectively, whereas those for the control treatment equaled 0.81 mg kg<sup>-1</sup> day<sup>-1</sup>.<br /> <strong>Conclusion</strong> Composts containing 25% blood powder were acceptable in terms of quantity and nitrogen release over time, and can serve as a reliable source of available nutrients in the soil.http://ijrowa.khuisf.ac.ir/article_672376_69a4f2a930ee25e3a32956e76b4f50d5.pdfvermicompostenrichmentnitrogenmineralization |
| spellingShingle | Ali Askari Ali Khanmirzaei Shekoofeh Rezaei Vermicompost enrichment using organic wastes: Nitrogen content and mineralization International Journal of Recycling of Organic Waste in Agriculture vermicompost enrichment nitrogen mineralization |
| title | Vermicompost enrichment using organic wastes: Nitrogen content and mineralization |
| title_full | Vermicompost enrichment using organic wastes: Nitrogen content and mineralization |
| title_fullStr | Vermicompost enrichment using organic wastes: Nitrogen content and mineralization |
| title_full_unstemmed | Vermicompost enrichment using organic wastes: Nitrogen content and mineralization |
| title_short | Vermicompost enrichment using organic wastes: Nitrogen content and mineralization |
| title_sort | vermicompost enrichment using organic wastes nitrogen content and mineralization |
| topic | vermicompost enrichment nitrogen mineralization |
| url | http://ijrowa.khuisf.ac.ir/article_672376_69a4f2a930ee25e3a32956e76b4f50d5.pdf |
| work_keys_str_mv | AT aliaskari vermicompostenrichmentusingorganicwastesnitrogencontentandmineralization AT alikhanmirzaei vermicompostenrichmentusingorganicwastesnitrogencontentandmineralization AT shekoofehrezaei vermicompostenrichmentusingorganicwastesnitrogencontentandmineralization |