Synergistic effect of compost and moringa leaf extract biostimulants on the remediation of gold mine tailings using chrysopogon zizanioides
Phytoremediation is a cost-effective and environmentally friendly method for restoring degraded land. However, optimizing phytoremediation conditions and using locally sourced materials can further improve the sustainability of this approach. A 3×2×2 factorial design was used in determining the opti...
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Elsevier
2024-12-01
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| Series: | Scientific African |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468227624003004 |
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| author | Nkanyiso Mlalazi Luke Chimuka Mulala Danny Simatele |
| author_facet | Nkanyiso Mlalazi Luke Chimuka Mulala Danny Simatele |
| author_sort | Nkanyiso Mlalazi |
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| description | Phytoremediation is a cost-effective and environmentally friendly method for restoring degraded land. However, optimizing phytoremediation conditions and using locally sourced materials can further improve the sustainability of this approach. A 3×2×2 factorial design was used in determining the optimal parameters in the remediation of gold mine tailings using vetiver grass. The treatments consisted of three compost concentrations (0 %, 30 % and 60 %), two biostimulant types (laboratory-extracted and commercial biostimulants) and two application regimens (once and twice a week) in a randomized complete block design. The biomass and metal concentrations in the vetiver grass were measured after 16 weeks. All the vetiver that was planted in 0 % compost amendment died within four weeks regardless the MLE treatment. There was no significant difference in vetiver biomass between vetiver grown in 30 % and that grown in 60 % compost amendment. Biostimulant application frequency led to no significant differences. A difference on vetiver biomass due to the type of moringa leaf extract was eminent, with laboratory moringa leaf extract resulting in significantly higher biomass in vetiver grown on 60 % compost yet the commercial moringa leaf extract producing significantly higher vetiver biomass on vetiver grown on 30 % compost amendment. These findings suggest that the optimal combination for field study would be 30 % compost amendment with commercial biostimulant for a more cost-effective option. |
| format | Article |
| id | doaj-art-19b8c05eb4c54ab899fa6e53932d15c1 |
| institution | Kabale University |
| issn | 2468-2276 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
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| series | Scientific African |
| spelling | doaj-art-19b8c05eb4c54ab899fa6e53932d15c12024-12-21T04:28:55ZengElsevierScientific African2468-22762024-12-0126e02358Synergistic effect of compost and moringa leaf extract biostimulants on the remediation of gold mine tailings using chrysopogon zizanioidesNkanyiso Mlalazi0Luke Chimuka1Mulala Danny Simatele2School of Geography, Archaeology and Environmental Studies, University of the Witwatersrand, Johannesburg, South Africa; Corresponding author.Molecular Sciences Institute, School of Chemistry, University of Witwatersrand, Johannesburg, South AfricaSchool of Geography, Archaeology and Environmental Studies, University of the Witwatersrand, Johannesburg, South AfricaPhytoremediation is a cost-effective and environmentally friendly method for restoring degraded land. However, optimizing phytoremediation conditions and using locally sourced materials can further improve the sustainability of this approach. A 3×2×2 factorial design was used in determining the optimal parameters in the remediation of gold mine tailings using vetiver grass. The treatments consisted of three compost concentrations (0 %, 30 % and 60 %), two biostimulant types (laboratory-extracted and commercial biostimulants) and two application regimens (once and twice a week) in a randomized complete block design. The biomass and metal concentrations in the vetiver grass were measured after 16 weeks. All the vetiver that was planted in 0 % compost amendment died within four weeks regardless the MLE treatment. There was no significant difference in vetiver biomass between vetiver grown in 30 % and that grown in 60 % compost amendment. Biostimulant application frequency led to no significant differences. A difference on vetiver biomass due to the type of moringa leaf extract was eminent, with laboratory moringa leaf extract resulting in significantly higher biomass in vetiver grown on 60 % compost yet the commercial moringa leaf extract producing significantly higher vetiver biomass on vetiver grown on 30 % compost amendment. These findings suggest that the optimal combination for field study would be 30 % compost amendment with commercial biostimulant for a more cost-effective option.http://www.sciencedirect.com/science/article/pii/S2468227624003004Sustainable phytoremediationCommercial moringa leaf extractBiostimulantMoringa leaf extractVetiver grassCompost |
| spellingShingle | Nkanyiso Mlalazi Luke Chimuka Mulala Danny Simatele Synergistic effect of compost and moringa leaf extract biostimulants on the remediation of gold mine tailings using chrysopogon zizanioides Scientific African Sustainable phytoremediation Commercial moringa leaf extract Biostimulant Moringa leaf extract Vetiver grass Compost |
| title | Synergistic effect of compost and moringa leaf extract biostimulants on the remediation of gold mine tailings using chrysopogon zizanioides |
| title_full | Synergistic effect of compost and moringa leaf extract biostimulants on the remediation of gold mine tailings using chrysopogon zizanioides |
| title_fullStr | Synergistic effect of compost and moringa leaf extract biostimulants on the remediation of gold mine tailings using chrysopogon zizanioides |
| title_full_unstemmed | Synergistic effect of compost and moringa leaf extract biostimulants on the remediation of gold mine tailings using chrysopogon zizanioides |
| title_short | Synergistic effect of compost and moringa leaf extract biostimulants on the remediation of gold mine tailings using chrysopogon zizanioides |
| title_sort | synergistic effect of compost and moringa leaf extract biostimulants on the remediation of gold mine tailings using chrysopogon zizanioides |
| topic | Sustainable phytoremediation Commercial moringa leaf extract Biostimulant Moringa leaf extract Vetiver grass Compost |
| url | http://www.sciencedirect.com/science/article/pii/S2468227624003004 |
| work_keys_str_mv | AT nkanyisomlalazi synergisticeffectofcompostandmoringaleafextractbiostimulantsontheremediationofgoldminetailingsusingchrysopogonzizanioides AT lukechimuka synergisticeffectofcompostandmoringaleafextractbiostimulantsontheremediationofgoldminetailingsusingchrysopogonzizanioides AT mulaladannysimatele synergisticeffectofcompostandmoringaleafextractbiostimulantsontheremediationofgoldminetailingsusingchrysopogonzizanioides |