Influence of Soil Moisture Status on Soil Cadmium Phytoavailability and Accumulation in Plantain (Plantar lanceolata)

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dc.citation.issue1
dc.citation.volume2
dc.contributor.authorStafford A
dc.contributor.authorJeyakumar P
dc.contributor.authorHedley M
dc.contributor.authorAnderson C
dc.date.available2018-03
dc.date.issued2018-03
dc.description.abstractThe effect of fluctuating soil moisture cycles on soil cadmium (Cd) phytoavailability was investigated in a pot trial with two contrasting soils (Kereone (Allophanic), total Cd 0.79 mg kg−1; and Topehaehae (Gley), total Cd 0.61 mg kg−1) that were either sown with plantain (Plantago lanceolata) or left unseeded. Varying soil moisture contents were established using contrasting irrigation regimes: “flooded” (3 days flooded and then 11 days drained); or “non-flooded” (irrigation to 70% of potted field capacity every 7 days). Overall, there was no significant difference in mean 0.05 M CaCl2 soil extractable Cd concentrations or plant tissue Cd concentrations between flooded and non-flooded irrigation. However, there was a consistent trend for an increase in soil extractable Cd concentrations following irrigation, regardless of the irrigation regime. Mean soil extractable Cd and plant tissue Cd concentrations were significantly greater (approximately 325% and 183%, respectively) for the Topehaehae soil than the Kereone soil, despite the lower soil total Cd concentration of the Topehaehae soil. These results indicate that Cd solubility is sensitive to increases in soil moisture following periods of soil drainage, but insensitive to short-term periods of soil saturation. Plant tissue Cd concentrations in Cd-sensitive forage crops such as plantain are likely to be greater following large rainfall events over summer and autumn. This has the potential to increase animal dietary Cd exposure and rate of liver/kidney Cd accumulation.
dc.description.confidentialFALSE
dc.edition.editionMar-18
dc.format.extent? - ? (15)
dc.identifierhttps://www.mdpi.com/2571-8789/2/1/9/htm
dc.identifierhttp://www.massey.ac.nz/massey/expertise/profile.cfm?stref=875302&_ga=2.246137922.770591023.1518336261-1655401656.1505382212&_gac=1.149686786.1516737574.EAIaIQobChMIwZLZ3u_u2AIVliy9Ch1PBQdREAAYASAAEgJeJ_D_BwE
dc.identifier9
dc.identifier.citationSoil Systems, 2018, March 2018, 2 (1), pp. ? - ? (15)
dc.identifier.doi10.3390/soils2010009
dc.identifier.eissn2571-8789
dc.identifier.elements-id399767
dc.identifier.harvestedMassey_Dark
dc.identifier.urihttps://hdl.handle.net/10179/13038
dc.languageEnglish
dc.publisherMDPI (Basel, Switzerland)
dc.publisher.urihttps://www.mdpi.com/2571-8789/2/1/9/htm
dc.relation.isPartOfSoil Systems
dc.relation.urihttp://www.mdpi.com/2571-8789/2/1/9
dc.subjectCadmium
dc.subjectredox
dc.subjectphytoavailability
dc.subjectaccumulation
dc.subjectplantain
dc.titleInfluence of Soil Moisture Status on Soil Cadmium Phytoavailability and Accumulation in Plantain (Plantar lanceolata)
dc.typeJournal article
pubs.notesNot known
pubs.organisational-group/Massey University
pubs.organisational-group/Massey University/College of Sciences
pubs.organisational-group/Massey University/College of Sciences/School of Agriculture & Environment
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