Co-planting Brassica napus and Salix nigra as a phytomanagement alternative for copper contaminated soil

Massenet, Aleena; Bonet, Amandine; Laur, Joan; Labrecque, Michel

doi:10.1016/j.chemosphere.2021.130517

Cited by 14 publications

(8 citation statements)

References 39 publications

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“…In contrast, none of the polyculture systems that included T. repens performed similarly, suggesting that this species, when co‐cultivated with S. lycopersicum , S. discolor or A. millefolium , enhanced the Cu uptake of companions in aerial vegetative parts without alarmingly increasing the Cu concentration in associated S. lycopersicum fruits. Thus, T. repens demonstrated potential in this study to be integrated into more complex plant assemblages either in previously remediated soils or during ongoing remediation efforts, similar to Brassica napus , which, under specific conditions, stimulates Cu uptake by Salix trees in contaminated soils (Massenet et al., 2021). Although Salix spp.…”

Section: Discussionmentioning

confidence: 92%

Can we simultaneously decontaminate and cultivate? An urban cherry tomato story

Viau,

Paul,

Labrecque

2023

Urban Agric & Regnl Food Sys

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Urban planners are increasingly focused on integrating urban farming as a creative strategy for producing sustainable, local food in underutilized spaces, once occupied by polluting industries, in peri‐urban areas. However, before urban farming's contribution to local self‐sufficiency can be determined, it is crucial to gather quantitative data on the effectiveness of tailored strategies, including polyculture, and the suitability of different vegetables, to adequately assess the value of brownfields. This study aims to provide quantitative agronomic data on a copper‐contaminated urban garden with the dual objective of assessing its capacity for food production and mitigating the spread of soil contamination. Tomato (Solanum lycopersicum) plants were grown for one growing season in brownfield soils with different copper concentrations (up to 2000 mg kg−1), accompanied by different plant species assemblages typically used in phytoremediation (Achillea millefolium, Salix discolor, and Trifolium repens). The most successful assemblage yielded over 800 fruits per square meter with low copper concentrations (<5 mg kg−1), indicating that one square meter could satisfy the annual fresh tomato weight requirement of an average individual. Although some amendments can improve adaptability to local soils, the highest fruit‐producing assemblage consisting of S. lycopersicum, S. discolor, and T. repens also proved to be the one of the most effective for copper phytoextraction, removing over 30 g ha−1 from the contaminated soils. Overall, the data indicated that all assemblages phytostabilized copper. The quantitative results of this study provide a valuable benchmark for urban planners and researchers to implement large‐scale urban agriculture on brownfield sites.

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Section: Discussionmentioning

confidence: 92%

Can we simultaneously decontaminate and cultivate? An urban cherry tomato story

Viau,

Paul,

Labrecque

2023

Urban Agric & Regnl Food Sys

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“…In the control series (without bentonite), the above-ground parts of plants were relatively sensitive to soil contamination with HMs, and were found to have a significantly lower plant yield, as per the views of other authors. As mentioned, plant cover in areas where such high concentrations of HMs were found to occur is much sparser [ 44 , 45 , 46 ]. However, the application of bentonite significantly influenced an improvement and increase in the plant yield, which in this case was 39% higher.…”

Section: Resultsmentioning

confidence: 99%

Bentonite as a Functional Material Enhancing Phytostabilization of Post-Industrial Contaminated Soils with Heavy Metals

et al. 2022

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Growing awareness of the risks posed by pollution of the soil environment is leading to the development of new remediation strategies. The technique of aided phytostabilization, which involves the evaluation of new heavy-metal (HM)-immobilizing amendments, together with appropriately selected plant species, is a challenge for environmental protection and remediation of the soil environment, and seems to be promising. In this study, the suitability of bentonite for the technique of aided phytostabilization of soils contaminated with high HM concentrations was determined, using a mixture of two grass species. The HM contents in the tested plants and in the soil were determined by flame atomic absorption spectrometry. The application of bentonite had a positive effect on the biomass of the tested plants, and resulted in an increase in soil pH. The concentrations of copper, nickel, cadmium, lead and chromium were higher in the roots than in the above-ground parts of the plants, especially when bentonite was applied to the soil. The addition of the analyzed soil additive contributed significantly to a decrease in the levels of zinc, copper, cadmium and nickel in the soil at the end of the experiment. In view of the above, it can be concluded that the use of bentonite in the aided phytostabilization of soils polluted with HMs, is appropriate.

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“…Plant species vary in their capacities to accumulate or tolerate metal(loid)s in aerial structures and roots, and this capacity is determined by the concentration of metal(loid)s present in the soil, by the physiological features of the species and by their selectivity for specific metal(loid)s (Massenet et al 2021 ; Pilon-Smits 2005 ). Phytostabilization is a type of phytoremediation aimed at immobilizing pollutants in a contaminated substrate, by establishing vegetation on top of the polluted material (Forján et al 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Phytoremediation potential depends on the degree of soil pollution: a case study in an urban brownfield

Fernández-Braña¹,

Salgado²,

Gallego³

et al. 2023

Environ Sci Pollut Res

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Phytoremediation is a cost-effective nature-based solution for brownfield reclamation. The choice of phytoextraction or phytostabilization strategies is highly relevant when planning full-scale treatments. A suitable approach to identify such species involves the evaluation of plants that grow spontaneously on the contaminated sites. Here, we sought to determine the phytoremediation potential of three spontaneous plant species, namely the trees Acer pseudoplatanus L (A. pseudoplatanus) and Betula celtiberica Rothm. & Vasc (B. celtiberica), and the shrub Buddleja davidii Franch (B. davidii), for the recovery of an urban brownfield. To determine the response of the species to the degree of contamination, we conducted soil and vegetation sampling inside and outside the site. The concentrations of As, Cu, and Zn in soil and plant samples were measured, and then various indexes related to phytoremediation were calculated. The translocation factor and transfer coefficient indicated that vegetation outside the brownfield had phytoextraction capacity while the same plants inside the brownfield revealed phytostabilization properties. Given our results, we propose that the selected species are suitable for phytostabilization strategies in areas with high concentrations of contaminants, whereas they could be used for phytoextraction only in soils with low or moderate levels of pollution. Graphical Abstract

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Co-planting Brassica napus and Salix nigra as a phytomanagement alternative for copper contaminated soil

Cited by 14 publications

References 39 publications

Can we simultaneously decontaminate and cultivate? An urban cherry tomato story

Can we simultaneously decontaminate and cultivate? An urban cherry tomato story

Bentonite as a Functional Material Enhancing Phytostabilization of Post-Industrial Contaminated Soils with Heavy Metals

Phytoremediation potential depends on the degree of soil pollution: a case study in an urban brownfield

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