Efficiency of various silicon rich amendments on growth and cadmium accumulation in field grown cereals and health risk assessment. (April 2020)

• Record Type: Journal Article
• Authors: Sohail, Muhammad Irfan; Zia ur Rehman, Muhammad; Rizwan, Muhammad; Yousaf, Balal; Ali, Shafaqat; Anwar ul Haq, Muhammad; Anayat, Alia; Waris, Aisha A.
• Is Part Of: Chemosphere. Volume 244(2020)
• Publication Date: 2020-04
• Subjects: Silicon -- Cereals -- Biochar -- Immobilization -- Cadmium stress -- Cost-benefit analysis; Pollution -- Periodicals; Pollution -- Physiological effect -- Periodicals; Environmental sciences -- Periodicals; Atmospheric chemistry -- Periodicals; 551.511
• DOI: 10.1016/j.chemosphere.2019.125481
• Languages: English
• ISSNs: 0045-6535

Abstract

Abstract: Cadmium (Cd) contamination of arable soils and its subsequent accumulation in food is one of the global issues which needs urgent attention. Field experiments were conducted to explore the impacts of ten silicon (Si) rich amendments on Cd bioavailability and accumulation by maize and wheat irrigated with sewage effluents. Results depicted that applied amendments decreased the total Cd accumulation in shoots and grains of both crops with and the maximum decrease was observed in rice husk biochar (RHB) treatment. The RHB was able to significantly decrease the translocation factor, Cd harvest and health risk indexes. All amendments differentially affected the soil pH, EC, CaCl2 -extractable Si, and decreased the AB-DTPA-extractable soil Cd. Overall, suitable Si rich amendments (like RHB and CSB etc.) can be employed to mitigate the health risks associated with dietary Cd in untreated sewage irrigated fields. However, the cost-benefit analysis such Si rich amendments should be considered before final recommendations. Graphical abstract: Image 1 Highlights: Various silicon (Si) rich amendments increased the maize and wheat growth and yield. Si rich amendments increased the photosynthesis of both crops. Rice husk biochar was the most effective in decreasing Cd in grains of both crops. All amendments reduced the health risk caused by Cd.