Application of zinc and biochar help to mitigate cadmium stress in bread wheat raised from seeds with high intrinsic zinc

Chemosphere
Muhammad FarooqKadambot H M Siddique

Abstract

Cadmium (Cd) contamination in soil negatively impacts crop productivity, grain quality, and human health. Wheat seeds, with different concentrations of intrinsic zinc (Zn): low Zn (35 mg kg-1), medium (42 mg kg-1), and high Zn (49 mg kg-1), were planted in artificially contaminated soil (10 mg Cd kg-1 soil). Zinc (5 g kg-1) and biochar (20 g kg-1 soil) were applied alone or in combination at sowing. Cadmium contamination reduced wheat growth, productivity, and grain Zn concentration, relative to the respective no-Cd treatments, with greater reductions in plants with low intrinsic Zn. Among the soil amendments, Zn and/or biochar improved wheat productivity and grain Zn and reduced grain Cd concentration in plants grown from seed with varying intrinsic Zn levels. Plants from high intrinsic Zn seeds performed better under Cd stress with the application of soil amendments than seeds with low or medium intrinsic Zn levels. The combined application of Zn and biochar had the highest increases in grain yield (9.51%) and grain Zn concentration (12.2%), relative to the control (no Cd, no Zn, and no biochar). This treatment also decreased the Cd concentrations in straw (7.1%) and grain (95.6%). The sole application of Zn or biochar improv...Continue Reading

Citations

Sep 17, 2020·International Journal of Environmental Research and Public Health·Hui WangYunguo Liu
Jan 20, 2021·Biological Trace Element Research·Munir OzturkPedro García Caparrós
Jan 16, 2021·Ecotoxicology and Environmental Safety·Fasih Ullah HaiderMuhammad Farooq
Mar 14, 2021·Ecotoxicology and Environmental Safety·Fasih Ullah HaiderCai Liqun

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