Spraying high concentrations of chelated zinc enhances zinc biofortification in wheat grain

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dc.creatorXu, Meng
dc.creatorLiu, Mengjiao
dc.creatorSi, Linlin
dc.creatorMa, Qingxu
dc.creatorSun, Tao
dc.creatorWang, Jun
dc.creatorChen, Kaijun
dc.creatorWang, Xiangjie
dc.creatorWu, Lianghuan
dc.date2022-07
dc.date2025-07-09T20:04:53Z
dc.date2025-07-09T20:04:53Z
dc.date.accessioned2026-06-27T15:18:04Z
dc.descriptionBACKGROUND Foliar application of highly concentrated ZnSO4 fertilizer improves Zn biofortification in wheat grains. However, excess ZnSO4·7H2O concentration (≥5 g kg−1, w v−1) has been associated with leaf burn and yield loss, necessitating Zn sources with a high threshold concentration. The aim of this study, based on a 2 year field experiment conducted on wheat cultivated in acidic and alkaline soil, was to identify a suitable Zn formulation with a high Zn concentration or efficient adjuvant to achieve optimal Zn biofortification levels without compromising agronomic performance. RESULTS There was a continued increase in the Zn concentration in wheat grains and a decrease in grain yield with an increase in the concentration of the Zn foliar sprays in both soil types examined. Wheats treated with chelated Zn foliar sprays – Zn glycine chelate (ZnGly) and Zn-ethylenediaminetetraacetic acid (ZnEDTA) – had less foliar injury than those treated with unchelated Zn fertilizers. Furthermore, irrespective of wheat cultivars and soil types, ZnEDTA applied to wheat at a concentration of 10 g kg−1 achieved the highest grain Zn concentration without negatively affecting the wheat performance. Adjuvant type and concentration caused no significant variation in grain Zn concentration. CONCLUSION Overall, without foliar burn, wheat treated with 10 g kg−1 ZnEDTA foliar spray had the best performance with regard to grain Zn concentration and grain yield, which could have considerable implications for Zn biofortification of wheat grain. © 2021 Society of Chemical Industry.
dc.identifierhttps://hdl.handle.net/10568/175579
dc.identifier.urihttp://hdl.handle.net/123456789/100438
dc.languageen
dc.publisherSociety of Chemical Industry
dc.rightsLimited Access
dc.sourceXu, Meng; Liu, Mengjiao; Si, Linlin; Ma, Qingxu; Sun, Tao; Wang, Jun; et al. 2022. Spraying high concentrations of chelated zinc enhances zinc biofortification in wheat grain. Journal of the Science of Food and Agriculture 102(9): 3590-3598. https://doi.org/10.1002/jsfa.11705
dc.subjectzinc
dc.subjectbiofortification
dc.subjectwheat
dc.subjectagriculture
dc.subjectfoliar application
dc.subjecttrace elements
dc.subjectagronomy
dc.titleSpraying high concentrations of chelated zinc enhances zinc biofortification in wheat grain
dc.typeJournal Article

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Instituto Internacional de Investigación sobre Políticas Alimentarias (IFPRI)