Biochar and sewage sludge phosphorus fertilizer effects on phosphorus bioavailability and spinach ( Spinacia oleracea L.) yields under no-till system in semi-arid soils
Purpose This field study evaluated the interactive effects of biochar (BC) and sewage sludge (SS) on P bioavailability and spinach yields for two seasons.Method Treatments were combinations of biochar (0, 2.5 and 5 Mg ha-1) and sewage sludge (0, 6 and 12 Mg ha-1), or mineral fertilizer (200, 28, and...
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OICC Press
2022-12-01
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| Series: | International Journal of Recycling of Organic Waste in Agriculture |
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| Online Access: | https://ijrowa.isfahan.iau.ir/article_687583_c88b54e2ebfea3f1632782a522489ffc.pdf |
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| author | Ugele Majaule Oagile Dikinya Bruno Glaser |
| author_facet | Ugele Majaule Oagile Dikinya Bruno Glaser |
| author_sort | Ugele Majaule |
| collection | DOAJ |
| description | Purpose This field study evaluated the interactive effects of biochar (BC) and sewage sludge (SS) on P bioavailability and spinach yields for two seasons.Method Treatments were combinations of biochar (0, 2.5 and 5 Mg ha-1) and sewage sludge (0, 6 and 12 Mg ha-1), or mineral fertilizer (200, 28, and 18.9 kg ha-1), amended in a randomized complete block design to Luvisol and Cambisol.Results Significant (p < 0.05) yield increase of 53 and 65%, respectively occurred with increasing sole biochar doses on the Luvisol. Both applied alone and in combination with BC, the high rate of SS increased (p < 0.05) yields on the Luvisol over two seasons. Complimentary effects of 6SS+5BC on the Luvisol showed the highest yield increase for the study period. Co-application of amendments on the Cambisol decreased (p > 0.05) yields compared to sole amendments. Mehlich – 3 extractable P (M3-P) in control plots (CONT) increased between seasons, presumably due to P inputs from the irrigation water. Co-amendments on the Cambisol resulted in higher M3-P increase over mineral fertilizer than on the Luvisol in both seasons. Accumulation of M3-P in control plots confounded correlations between crop yields and available P. Higher P under BC compared to SS amended soils emphasize biochar capacity to capture P from irrigation water.Conclusion The results suggest that combined low rates of SS and BC can have significant effects on P availability and crop yields. Biochar enhanced plant P uptake, but decrease in yields with simultaneous increase in M3-P between seasons warrants further research. |
| format | Article |
| id | doaj-art-5f9682e1e7444a248533b5477ebac91e |
| institution | Kabale University |
| issn | 2195-3228 2251-7715 |
| language | English |
| publishDate | 2022-12-01 |
| publisher | OICC Press |
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| series | International Journal of Recycling of Organic Waste in Agriculture |
| spelling | doaj-art-5f9682e1e7444a248533b5477ebac91e2025-02-03T09:52:30ZengOICC PressInternational Journal of Recycling of Organic Waste in Agriculture2195-32282251-77152022-12-0111452753910.30486/ijrowa.2022.1927076.1231687583Biochar and sewage sludge phosphorus fertilizer effects on phosphorus bioavailability and spinach ( Spinacia oleracea L.) yields under no-till system in semi-arid soilsUgele Majaule0Oagile Dikinya1Bruno Glaser2Department of Agricultural Research, Ministry of Agriculture Development and Food Security, Gaborone, BotswanaDepartment of Environmental Science, University of Botswana, Gaborone, BotswanaSoil Biogeochemistry, Institute of Agronomy and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle/Saale, GermanyPurpose This field study evaluated the interactive effects of biochar (BC) and sewage sludge (SS) on P bioavailability and spinach yields for two seasons.Method Treatments were combinations of biochar (0, 2.5 and 5 Mg ha-1) and sewage sludge (0, 6 and 12 Mg ha-1), or mineral fertilizer (200, 28, and 18.9 kg ha-1), amended in a randomized complete block design to Luvisol and Cambisol.Results Significant (p < 0.05) yield increase of 53 and 65%, respectively occurred with increasing sole biochar doses on the Luvisol. Both applied alone and in combination with BC, the high rate of SS increased (p < 0.05) yields on the Luvisol over two seasons. Complimentary effects of 6SS+5BC on the Luvisol showed the highest yield increase for the study period. Co-application of amendments on the Cambisol decreased (p > 0.05) yields compared to sole amendments. Mehlich – 3 extractable P (M3-P) in control plots (CONT) increased between seasons, presumably due to P inputs from the irrigation water. Co-amendments on the Cambisol resulted in higher M3-P increase over mineral fertilizer than on the Luvisol in both seasons. Accumulation of M3-P in control plots confounded correlations between crop yields and available P. Higher P under BC compared to SS amended soils emphasize biochar capacity to capture P from irrigation water.Conclusion The results suggest that combined low rates of SS and BC can have significant effects on P availability and crop yields. Biochar enhanced plant P uptake, but decrease in yields with simultaneous increase in M3-P between seasons warrants further research.https://ijrowa.isfahan.iau.ir/article_687583_c88b54e2ebfea3f1632782a522489ffc.pdfco-applicationbioavailabilityphosphorusspinachyield |
| spellingShingle | Ugele Majaule Oagile Dikinya Bruno Glaser Biochar and sewage sludge phosphorus fertilizer effects on phosphorus bioavailability and spinach ( Spinacia oleracea L.) yields under no-till system in semi-arid soils International Journal of Recycling of Organic Waste in Agriculture co-application bioavailability phosphorus spinach yield |
| title | Biochar and sewage sludge phosphorus fertilizer effects on phosphorus bioavailability and spinach ( Spinacia oleracea L.) yields under no-till system in semi-arid soils |
| title_full | Biochar and sewage sludge phosphorus fertilizer effects on phosphorus bioavailability and spinach ( Spinacia oleracea L.) yields under no-till system in semi-arid soils |
| title_fullStr | Biochar and sewage sludge phosphorus fertilizer effects on phosphorus bioavailability and spinach ( Spinacia oleracea L.) yields under no-till system in semi-arid soils |
| title_full_unstemmed | Biochar and sewage sludge phosphorus fertilizer effects on phosphorus bioavailability and spinach ( Spinacia oleracea L.) yields under no-till system in semi-arid soils |
| title_short | Biochar and sewage sludge phosphorus fertilizer effects on phosphorus bioavailability and spinach ( Spinacia oleracea L.) yields under no-till system in semi-arid soils |
| title_sort | biochar and sewage sludge phosphorus fertilizer effects on phosphorus bioavailability and spinach spinacia oleracea l yields under no till system in semi arid soils |
| topic | co-application bioavailability phosphorus spinach yield |
| url | https://ijrowa.isfahan.iau.ir/article_687583_c88b54e2ebfea3f1632782a522489ffc.pdf |
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