Pilli Kiran, Patra Prasanta Kumar, Pal Subhajit, Dash Bishnuprasad, M Jaison, Acharjee Pravat Utpal, Vinayak Rudra
Department of Agricultural Chemistry and Soil Science, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, India.
Heliyon. 2024 Feb 16;10(5):e26530. doi: 10.1016/j.heliyon.2024.e26530. eCollection 2024 Mar 15.
Agricultural soils naturally enriched with Arsenic (As) represent a significant global human health risk. In the present investigation, a series of pot experiments were conducted to study the efficacy of three levels of Yellow Gypsum (YG) application on bioavailability of As to groundnut followed by -rice grown under 17 different levels of soil As contamination for two consecutive years. The results revealed that application of YG @ 60 kg ha effectuated the lowest soil As content and the highest percent decline in soil extractable As at pegging (9.42 mg kg and 9.81%) and harvesting (8.81 mg kg and 11.85%) in groundnut, maximum tillering (7.52 mg kg and 16.95%) and harvesting (6.77 mg kg and 19.85%) in -rice respectively. It was also observed that irrespective of its level, the extractable As content of soil decreased significantly ( < ) with increasing dosage of YG. Increase in YG dose effectuated a significant ( < ) increasing trend and increase in As content in soil indicated a decreasing trend of Ca:As, Fe:As and S:As ratios which pointed out the potentiality of YG for reducing As bio-availability in contaminated soils and thus could be a good option for mitigating the risk of As contamination in food chain.
天然富含砷（As）的农业土壤对全球人类健康构成重大风险。在本研究中，进行了一系列盆栽试验，以研究在17种不同土壤砷污染水平下，连续两年种植花生-水稻时，施用三个水平的黄石膏（YG）对土壤中砷对花生生物有效性的影响。结果表明，施用60千克/公顷的YG可使花生在结荚期（9.42毫克/千克和9.81%）和收获期（8.81毫克/千克和11.85%）的土壤砷含量最低，土壤可提取砷的下降百分比最高；使水稻在最大分蘖期（7.52毫克/千克和16.95%）和收获期（6.77毫克/千克和19.85%）的土壤砷含量最低。还观察到，无论其水平如何，随着YG用量的增加，土壤中可提取的砷含量显著降低（P<0.05）。YG剂量的增加导致显著（P<0.05）的增加趋势，土壤中砷含量的增加表明钙：砷、铁：砷和硫：砷的比例呈下降趋势，这表明YG具有降低污染土壤中砷生物有效性的潜力，因此可能是减轻食物链中砷污染风险的一个好选择。
