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Article

Comparison between a Traditional (Horse Manure) and a Non-Conventional (Cork Powder) Organic Residue in the Uptake of Potentially Toxic Elements by Lettuce in Contaminated Soils

LEAF, Instituto Superior de Agronomia, Universidade de Lisboa, 1349-017 Lisboa, Portugal
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Author to whom correspondence should be addressed.
Academic Editor: Gianniantonio Petruzzelli
Received: 8 April 2021 / Revised: 9 May 2021 / Accepted: 13 May 2021 / Published: 18 May 2021
(This article belongs to the Special Issue Soil Pollution Assessment and Sustainable Remediation Strategies)
The use of natural organic correctives is a current agricultural practice that may have advantages for the production of plants in contaminated soils. Cork powder is a natural sub-product of the cork industry that has several potential benefits compared to more commonly used soil amendments. In this work, an evaluation was performed of the use of cork powder (a non-conventional organic residue) and horse manure (traditionally used in agriculture) to control the availability of potentially toxic elements in artificially contaminated soils. Four concentrations were used for each element: Cr (100 to 800 mg kg−1), Ni (37.5 to 300 mg kg−1), Zn (150 to 1200 mg kg−1), Cd (1.5 to 12 mg kg−1) and Pb (150 to 1200 mg kg−1). The accumulation of these elements in lettuce plants grown in pots under controlled conditions was evaluated. With the exception of Cd, no significant differences were detected in the absorption of the different elements by lettuce plants at the studied amounts of correctives applied (1% for cork powder and 0.5% for horse manure). Cadmium was the element that accumulated most in lettuce. Cork powder was shown to be less effective than horse manure in controlling the bioavailability of these elements in the soil. Further tests with chemically modified cork products could improve its efficiency. View Full-Text
Keywords: cadmium; chromium; lead; nickel; zinc; cork; horse manure; element accumulation; lettuce cadmium; chromium; lead; nickel; zinc; cork; horse manure; element accumulation; lettuce
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MDPI and ACS Style

Moreira, I.; Leitão, I.; Mourato, M.P.; Martins, L.L. Comparison between a Traditional (Horse Manure) and a Non-Conventional (Cork Powder) Organic Residue in the Uptake of Potentially Toxic Elements by Lettuce in Contaminated Soils. Environments 2021, 8, 45. https://0-doi-org.brum.beds.ac.uk/10.3390/environments8050045

AMA Style

Moreira I, Leitão I, Mourato MP, Martins LL. Comparison between a Traditional (Horse Manure) and a Non-Conventional (Cork Powder) Organic Residue in the Uptake of Potentially Toxic Elements by Lettuce in Contaminated Soils. Environments. 2021; 8(5):45. https://0-doi-org.brum.beds.ac.uk/10.3390/environments8050045

Chicago/Turabian Style

Moreira, Inês, Inês Leitão, Miguel P. Mourato, and Luisa L. Martins 2021. "Comparison between a Traditional (Horse Manure) and a Non-Conventional (Cork Powder) Organic Residue in the Uptake of Potentially Toxic Elements by Lettuce in Contaminated Soils" Environments 8, no. 5: 45. https://0-doi-org.brum.beds.ac.uk/10.3390/environments8050045

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