Effect of Phosphate Amendment on Cadmium Accumulation in Pepper (<i>Capsicum annuum</i> L.) Grown in Geogenic Cd-Rich Soil from the Karst Region
Soil in the karst region usually features high geogenic cadmium (Cd) and limited available phosphorus (P). Appropriate phosphate amendment is crucial for alleviating Cd accumulation in food crops and reducing health risks. However, the interaction of Cd and P in geogenic Cd-rich soil-plant systems i...
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2024-12-01
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| Series: | Agronomy |
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| author | Yuyang Li Dan Xing Rong Wen Wangwang Zhou Yongxiang Zhang Yizhang Liu |
| author_facet | Yuyang Li Dan Xing Rong Wen Wangwang Zhou Yongxiang Zhang Yizhang Liu |
| author_sort | Yuyang Li |
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| description | Soil in the karst region usually features high geogenic cadmium (Cd) and limited available phosphorus (P). Appropriate phosphate amendment is crucial for alleviating Cd accumulation in food crops and reducing health risks. However, the interaction of Cd and P in geogenic Cd-rich soil-plant systems is poorly understood. In this study, a pot experiment was conducted to investigate the translocation of Cd in the soil-pepper system under different amendment rates of Ca(H<sub>2</sub>PO<sub>4</sub>)<sub>2</sub>. The results showed that the biomass of pepper was not affected by the application rates of Ca(H<sub>2</sub>PO<sub>4</sub>)<sub>2,</sub> even up to 0.45 g/kg, but was affected by the application of nitrogen and potassium fertilizers. High contents of total Cd (6.19 mg/kg) and bioavailable Cd (2.72 mg/kg, 44%) in the studied soils resulted in elevated Cd content in pepper, and it decreased in the order of root (8.18 mg/kg) > stem (4.89 mg/kg) > fruit (3.88 mg/kg). This indicates that pepper planted in the studied soils may present potential health risks. Furthermore, phosphate amendment neither influences the bioavailable Cd in rhizosphere soil nor Cd uptake and transport in pepper plants. The findings of this study highlight that monocalcium phosphate is not a suitable choice for reducing the accumulation of Cd in pepper fruits in the studied soil and that other remediation strategies are needed. |
| format | Article |
| id | doaj-art-35580341fdb04a15bc9bb191fa567fa1 |
| institution | Kabale University |
| issn | 2073-4395 |
| language | English |
| publishDate | 2024-12-01 |
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| series | Agronomy |
| spelling | doaj-art-35580341fdb04a15bc9bb191fa567fa12025-01-24T13:16:22ZengMDPI AGAgronomy2073-43952024-12-011512010.3390/agronomy15010020Effect of Phosphate Amendment on Cadmium Accumulation in Pepper (<i>Capsicum annuum</i> L.) Grown in Geogenic Cd-Rich Soil from the Karst RegionYuyang Li0Dan Xing1Rong Wen2Wangwang Zhou3Yongxiang Zhang4Yizhang Liu5State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, No. 99 West Lincheng Road, Guanshanhu District, Guiyang 550081, ChinaInstitute of Pepper, Guizhou Academy of Agricultural Sciences, Guiyang 550006, ChinaInstitute of Pepper, Guizhou Academy of Agricultural Sciences, Guiyang 550006, ChinaState Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, No. 99 West Lincheng Road, Guanshanhu District, Guiyang 550081, ChinaState Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, No. 99 West Lincheng Road, Guanshanhu District, Guiyang 550081, ChinaState Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, No. 99 West Lincheng Road, Guanshanhu District, Guiyang 550081, ChinaSoil in the karst region usually features high geogenic cadmium (Cd) and limited available phosphorus (P). Appropriate phosphate amendment is crucial for alleviating Cd accumulation in food crops and reducing health risks. However, the interaction of Cd and P in geogenic Cd-rich soil-plant systems is poorly understood. In this study, a pot experiment was conducted to investigate the translocation of Cd in the soil-pepper system under different amendment rates of Ca(H<sub>2</sub>PO<sub>4</sub>)<sub>2</sub>. The results showed that the biomass of pepper was not affected by the application rates of Ca(H<sub>2</sub>PO<sub>4</sub>)<sub>2,</sub> even up to 0.45 g/kg, but was affected by the application of nitrogen and potassium fertilizers. High contents of total Cd (6.19 mg/kg) and bioavailable Cd (2.72 mg/kg, 44%) in the studied soils resulted in elevated Cd content in pepper, and it decreased in the order of root (8.18 mg/kg) > stem (4.89 mg/kg) > fruit (3.88 mg/kg). This indicates that pepper planted in the studied soils may present potential health risks. Furthermore, phosphate amendment neither influences the bioavailable Cd in rhizosphere soil nor Cd uptake and transport in pepper plants. The findings of this study highlight that monocalcium phosphate is not a suitable choice for reducing the accumulation of Cd in pepper fruits in the studied soil and that other remediation strategies are needed.https://www.mdpi.com/2073-4395/15/1/20soil pollutionheavy metalCd accumulationphosphorusfood crops |
| spellingShingle | Yuyang Li Dan Xing Rong Wen Wangwang Zhou Yongxiang Zhang Yizhang Liu Effect of Phosphate Amendment on Cadmium Accumulation in Pepper (<i>Capsicum annuum</i> L.) Grown in Geogenic Cd-Rich Soil from the Karst Region Agronomy soil pollution heavy metal Cd accumulation phosphorus food crops |
| title | Effect of Phosphate Amendment on Cadmium Accumulation in Pepper (<i>Capsicum annuum</i> L.) Grown in Geogenic Cd-Rich Soil from the Karst Region |
| title_full | Effect of Phosphate Amendment on Cadmium Accumulation in Pepper (<i>Capsicum annuum</i> L.) Grown in Geogenic Cd-Rich Soil from the Karst Region |
| title_fullStr | Effect of Phosphate Amendment on Cadmium Accumulation in Pepper (<i>Capsicum annuum</i> L.) Grown in Geogenic Cd-Rich Soil from the Karst Region |
| title_full_unstemmed | Effect of Phosphate Amendment on Cadmium Accumulation in Pepper (<i>Capsicum annuum</i> L.) Grown in Geogenic Cd-Rich Soil from the Karst Region |
| title_short | Effect of Phosphate Amendment on Cadmium Accumulation in Pepper (<i>Capsicum annuum</i> L.) Grown in Geogenic Cd-Rich Soil from the Karst Region |
| title_sort | effect of phosphate amendment on cadmium accumulation in pepper i capsicum annuum i l grown in geogenic cd rich soil from the karst region |
| topic | soil pollution heavy metal Cd accumulation phosphorus food crops |
| url | https://www.mdpi.com/2073-4395/15/1/20 |
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