Leaf scorching due to foliar application of synthetic acid mine drainage and the effectiveness of an antitranspirant in protecting leaves

dc.contributor.authorMabuza, Mzwandile
dc.contributor.authorAnnandale, John George
dc.contributor.authorSteyn, Joachim Marthinus
dc.contributor.authorTanner, Philip Dale
dc.date.accessioned2023-11-08T07:16:30Z
dc.date.issued2023-03
dc.descriptionDATA AVAILABILITY : The authors confirm that the data supporting the findings of this study are available within the article.en_US
dc.description.abstractUntreated acid mine drainage (AMD) is being considered for crop irrigation on strategically limed soils, but foliar scorching is of potential concern. To test whether crops might be protected by antitranspirants, a field trial and two glasshouse pot trials were undertaken during the 2020/2021 growing seasons. Crops, namely Sorghum bicolor, Zea mays, Glycine max, Vigna unguiculata, Triticum aestivum, Avena sativa, Medicago sativa, and Pisum sativum, were exposed to acid water with pH levels of 2.0, 2.5, 3.0, 4.0, and 7.0. The first pot trial and field trial tested the effects of sulphuric acid solutions (to simulate AMD) on leaf scorching and the second pot trial focused on the effectiveness of an antitranspirant, Wiltpruf®, in protecting crops against leaf scorching. Leaf scorching occurred at pH levels of 2.0, 2.5, and 3, but only to a maximum of 6% leaf area damage in the worst-affected crop species. Crops are likely to recover from this injury. Contrary to expectations, the antitranspirant increased the propensity for foliar injury among crops, especially at pH 2.0 and 2.5. Metal cations commonly found in AMD should be included in follow-up leaf scorching studies to better simulate likely AMD irrigation waters. However, it appears that any crop growth problems possibly encountered when irrigating with AMD are likely to stem from root zone effects.en_US
dc.description.departmentPlant Production and Soil Scienceen_US
dc.description.embargo2024-02-09
dc.description.librarianhj2023en_US
dc.description.sponsorshipThe Water Research Commission (WRC) of South Africa.en_US
dc.description.urihttps://link.springer.com/journal/10230en_US
dc.identifier.citationMabuza, M., Annandale, J., Steyn, M. et al. Leaf Scorching due to Foliar Application of Synthetic Acid Mine Drainage and the Effectiveness of an Antitranspirant in Protecting Leaves. Mine Water and the Environment 42, 98–110 (2023). https://doi.org/10.1007/s10230-023-00920-y.en_US
dc.identifier.issn1025-9112 (print)
dc.identifier.issn1616-1068 (online)
dc.identifier.other10.1007/s10230-023-00920-y
dc.identifier.urihttp://hdl.handle.net/2263/93198
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.rights© The Author(s) under exclusive licence to International Mine Water Association 2023. The original publication is available at : http://link.springer.comjournal/10230.en_US
dc.subjectAcid mine drainage (AMD)en_US
dc.subjectAcidic watersen_US
dc.subjectFoliar injuryen_US
dc.subjectpH levelsen_US
dc.subjectWiltpruf®en_US
dc.titleLeaf scorching due to foliar application of synthetic acid mine drainage and the effectiveness of an antitranspirant in protecting leavesen_US
dc.typePostprint Articleen_US

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