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Sustainability
Volume 14
Issue 21
10.3390/su142114419
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Article

Posidonia-Based Compost and Dredged Sediment in Growing Media Improve Tolerance and Nutrient Uptake in Ornamental Plants

by
Francesca Vannucchi
1,
Cristina Macci
1,*,
Serena Doni
1,
Vincenzo Longo
2,
Francesca Ugolini
3,
Grazia Masciandaro
1 and
Eleonora Peruzzi
1
1
National Council Research of Italy, Research Institute on Terrestrial Ecosystems (CNR-IRET), 56124 Pisa, Italy
2
National Council Research of Italy, Institute of Agricultural Biology and Biotechnology (CNR-IBBA), 56124 Pisa, Italy
3
National Council Research of Italy, Institute of BioEconomy (CNR-IBE), 50019 Firenze, Italy
*
Author to whom correspondence should be addressed.
Sustainability 2022, 14(21), 14419; https://doi.org/10.3390/su142114419
Submission received: 30 August 2022 / Revised: 17 October 2022 / Accepted: 26 October 2022 / Published: 3 November 2022
(This article belongs to the Special Issue Advances in the Sustainable Reuse of Sediments in Crop Production: Agronomic, Environmental, and Legal Issues)
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Abstract

Because of the high costs and environmental impacts of peat and chemical fertilizers, the search for sustainable alternatives is increasing. Posidonia-based compost (C) has been widely tested as a growing media, while the combination with decontaminated dredged sediments (S) has only recently been studied. Moreover, little information is available on the relationship between plants and growing media. In this work, the suitability of growing media (CS) composed of 100% C, 70% C + 30% S and 30% C + 70% S were investigated compared to peat, for ornamental plants (Elaeagnus macrophylla, Photinia × fraseri and Viburnum tinus). Plant growth, physiological, nutritional and antioxidant responses were also investigated. The CS were compliant with current legislation on growing media. The Cu (+60%; +70%), Mg (+11%; +23%) and Ca (+66%; +72%) concentrations were higher in CS with 30% and 70% of S, respectively, than peat. The plants growing in CS had lower antioxidant activities than those on peat, suggesting a better plant tolerance to abiotic stress. In conclusion, the use of CS growing media, especially those with 30% and 70% of S, can be a valuable strategy to replace peat and reduce the application of fertilizers.
Keywords: antioxidant activity; cation ratio; circular economy; dredged sediment; horticulture; nursery plants; peat-free substrate; plant nutrition; Posidonia oceanica; soilless cultivation antioxidant activity; cation ratio; circular economy; dredged sediment; horticulture; nursery plants; peat-free substrate; plant nutrition; Posidonia oceanica; soilless cultivation

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MDPI and ACS Style

Vannucchi, F.; Macci, C.; Doni, S.; Longo, V.; Ugolini, F.; Masciandaro, G.; Peruzzi, E. Posidonia-Based Compost and Dredged Sediment in Growing Media Improve Tolerance and Nutrient Uptake in Ornamental Plants. Sustainability 2022, 14, 14419. https://doi.org/10.3390/su142114419

AMA Style

Vannucchi F, Macci C, Doni S, Longo V, Ugolini F, Masciandaro G, Peruzzi E. Posidonia-Based Compost and Dredged Sediment in Growing Media Improve Tolerance and Nutrient Uptake in Ornamental Plants. Sustainability. 2022; 14(21):14419. https://doi.org/10.3390/su142114419

Chicago/Turabian Style

Vannucchi, Francesca, Cristina Macci, Serena Doni, Vincenzo Longo, Francesca Ugolini, Grazia Masciandaro, and Eleonora Peruzzi. 2022. "Posidonia-Based Compost and Dredged Sediment in Growing Media Improve Tolerance and Nutrient Uptake in Ornamental Plants" Sustainability 14, no. 21: 14419. https://doi.org/10.3390/su142114419

APA Style

Vannucchi, F., Macci, C., Doni, S., Longo, V., Ugolini, F., Masciandaro, G., & Peruzzi, E. (2022). Posidonia-Based Compost and Dredged Sediment in Growing Media Improve Tolerance and Nutrient Uptake in Ornamental Plants. Sustainability, 14(21), 14419. https://doi.org/10.3390/su142114419

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