Green manure and long-term fertilization effects on soil zinc and cadmium availability and uptake by wheat (Triticum aestivum L.) at different growth stages

The Science of the Total Environment
Roman GrüterSusan Tandy

Abstract

Zinc (Zn) deficiency in human populations depending on cereals as a main source of Zn is a global malnutrition problem. In this field study, we investigated the potential of green manure application to increase soil Zn availability and wheat grain Zn concentrations (biofortification) on a Luvisol with different long-term fertilizer management. We also studied cadmium (Cd), as wheat is a major contributor of this undesired non-essential element to human diets. Clover (Trifolium alexandrinum L.), mustard (Sinapis alba L.) or no green manure was grown on field plots which had been managed with farmyard manure or mineral fertilizers for 65years in Switzerland. After green manure incorporation into the soil, spring wheat (Triticum aestivum L.) was grown on all plots. The "diffusive gradients in thin films" (DGT) method and DTPA extraction were used to compare soil Zn and Cd availability among the treatments. In contrast to mustard, clover increased soil mineral nitrogen concentrations and wheat biomass; however, neither increased grain Zn concentrations. DGT-available Zn and Cd increased temporarily after both farmyard manure and mineral nitrogen fertilizer application. Higher DTPA-extractable soil Zn and Cd, lower wheat grain yield...Continue Reading

Citations

Aug 22, 2017·Frontiers in Microbiology·Elham A KazerooniAbdullah M Al-Sadi
Dec 19, 2019·Frontiers in Plant Science·Thilo Dürr-AusterEmmanuel Frossard
Jan 22, 2021·Environmental Science and Pollution Research International·Geila S CarvalhoJoão José Marques
Dec 12, 2018·Ecotoxicology and Environmental Safety·Xinxin YeHongjian Gao
May 18, 2021·Environmental Science & Technology·Zeinah Elhaj Baddar, Jason M Unrine
Mar 21, 2019·The Science of the Total Environment·Roman GrüterSusan Tandy

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