Nitrogen and phosphorus fluxes in three soils fertigated with decentralised wastewater treatment effluent to field capacity
The Decentralised Wastewater Treatment System (DEWATS) provides low cost onsite sanitation to residents living in informal settlements. Wastewater management through agriculture prevents environmental pollution and promotes sustainable agriculture. This study investigated the effects of fertigation...
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| Format: | Article |
| Language: | English |
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IWA Publishing
2019-06-01
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| Series: | Journal of Water Reuse and Desalination |
| Subjects: | |
| Online Access: | http://jwrd.iwaponline.com/content/9/2/142 |
| _version_ | 1818841417563242496 |
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| author | W. Musazura A. O. Odindo E. H. Tesfamariam J. C. Hughes C. A. Buckley |
| author_facet | W. Musazura A. O. Odindo E. H. Tesfamariam J. C. Hughes C. A. Buckley |
| author_sort | W. Musazura |
| collection | DOAJ |
| description | The Decentralised Wastewater Treatment System (DEWATS) provides low cost onsite sanitation to residents living in informal settlements. Wastewater management through agriculture prevents environmental pollution and promotes sustainable agriculture. This study investigated the effects of fertigation with DEWATS effluent to field capacity in three South African soils under a banana crop. The experiment was conducted as a complete randomised design in a greenhouse with two irrigation water treatments (DEWATS effluent vs municipal tap water irrigation + fertiliser) × three soil types (Ia, Cf and Se) and four replicates over 728 days. Data were collected on crop growth, nitrogen (N) and phosphorus (P) uptake and dynamics in the soil. The DEWATS effluent significantly (p < 0.05) increased N and P uptake and soil NH+4-N and extractable P concentrations. Furthermore, DEWATS effluent fertigation significantly (p < 0.05) increased N leaching from the Ia soil and P leaching from the Cf soil. Nitrogen and phosphorus leaching from DEWATS was lower than the tap water irrigation + fertiliser treatment. There was, however, excess N and P accumulation from the DEWATS than the irrigation + fertiliser treatment, which would cause environmental concerns from runoff and leaching losses in the medium to long term. |
| first_indexed | 2024-12-19T04:25:45Z |
| format | Article |
| id | doaj.art-a9d226957feb4af1ab5047349eb992e3 |
| institution | Directory Open Access Journal |
| issn | 2220-1319 2408-9370 |
| language | English |
| last_indexed | 2024-12-19T04:25:45Z |
| publishDate | 2019-06-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Journal of Water Reuse and Desalination |
| spelling | doaj.art-a9d226957feb4af1ab5047349eb992e32022-12-21T20:36:01ZengIWA PublishingJournal of Water Reuse and Desalination2220-13192408-93702019-06-019214215110.2166/wrd.2019.025025Nitrogen and phosphorus fluxes in three soils fertigated with decentralised wastewater treatment effluent to field capacityW. Musazura0A. O. Odindo1E. H. Tesfamariam2J. C. Hughes3C. A. Buckley4 Crop Science Discipline, University of KwaZulu-Natal, P. Bag X01, Scottsville 3209, South Africa Crop Science Discipline, University of KwaZulu-Natal, P. Bag X01, Scottsville 3209, South Africa University of Pretoria, P. Bag X20 Hatfield, Pretoria 0028, South Africa Soil Science Discipline, University of KwaZulu-Natal, P. Bag X01, Scottsville 3209, South Africa Pollution Research Group, Chemical Engineering, University of KwaZulu-Natal, Durban 4041, South Africa The Decentralised Wastewater Treatment System (DEWATS) provides low cost onsite sanitation to residents living in informal settlements. Wastewater management through agriculture prevents environmental pollution and promotes sustainable agriculture. This study investigated the effects of fertigation with DEWATS effluent to field capacity in three South African soils under a banana crop. The experiment was conducted as a complete randomised design in a greenhouse with two irrigation water treatments (DEWATS effluent vs municipal tap water irrigation + fertiliser) × three soil types (Ia, Cf and Se) and four replicates over 728 days. Data were collected on crop growth, nitrogen (N) and phosphorus (P) uptake and dynamics in the soil. The DEWATS effluent significantly (p < 0.05) increased N and P uptake and soil NH+4-N and extractable P concentrations. Furthermore, DEWATS effluent fertigation significantly (p < 0.05) increased N leaching from the Ia soil and P leaching from the Cf soil. Nitrogen and phosphorus leaching from DEWATS was lower than the tap water irrigation + fertiliser treatment. There was, however, excess N and P accumulation from the DEWATS than the irrigation + fertiliser treatment, which would cause environmental concerns from runoff and leaching losses in the medium to long term.http://jwrd.iwaponline.com/content/9/2/142crop evapotranspirationirrigation depthirrigation managementleachingnitratesorthophosphates |
| spellingShingle | W. Musazura A. O. Odindo E. H. Tesfamariam J. C. Hughes C. A. Buckley Nitrogen and phosphorus fluxes in three soils fertigated with decentralised wastewater treatment effluent to field capacity Journal of Water Reuse and Desalination crop evapotranspiration irrigation depth irrigation management leaching nitrates orthophosphates |
| title | Nitrogen and phosphorus fluxes in three soils fertigated with decentralised wastewater treatment effluent to field capacity |
| title_full | Nitrogen and phosphorus fluxes in three soils fertigated with decentralised wastewater treatment effluent to field capacity |
| title_fullStr | Nitrogen and phosphorus fluxes in three soils fertigated with decentralised wastewater treatment effluent to field capacity |
| title_full_unstemmed | Nitrogen and phosphorus fluxes in three soils fertigated with decentralised wastewater treatment effluent to field capacity |
| title_short | Nitrogen and phosphorus fluxes in three soils fertigated with decentralised wastewater treatment effluent to field capacity |
| title_sort | nitrogen and phosphorus fluxes in three soils fertigated with decentralised wastewater treatment effluent to field capacity |
| topic | crop evapotranspiration irrigation depth irrigation management leaching nitrates orthophosphates |
| url | http://jwrd.iwaponline.com/content/9/2/142 |
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