Agronomic performance and food safety of strawberry cultivated on a remediated sediment

被引:20
作者
Tozzi, Francesca [1 ]
Renella, Giancarlo [2 ]
Cristina, Macci [3 ]
Masciandaro, Grazia [3 ]
Gonnelli, Cristina [4 ]
Colzi, Ilaria [4 ]
Giagnoni, Laura [5 ]
Pecchioli, Simona [1 ]
Nin, Stefania [6 ]
Giordani, Edgardo [1 ]
机构
[1] Univ Florence, Dept Agr Food Environm & Forestry, Viale Idee 30, I-50019 Florence, Italy
[2] Univ Padua, Dept Agron Food Nat Resources Anim & Environm, Viale Univ 16, I-35020 Legnaro, Italy
[3] Natl Council Res, Res Inst Terr Ecosyst IRET, Via Moruzzi 1, I-56124 Pisa, Italy
[4] Univ Florence, Dept Biol, Via Micheli 1, I-50121 Florence, Italy
[5] Univ Brescia, Civil Environm Architectural Engn & Math, Via Bronze 43, I-25123 Brescia, Italy
[6] Res Ctr Vegetables & Ornamental Crops, CREA, Via Fiori 8, I-51012 Pescia, PT, Italy
关键词
Sediment dredging and remediation; Sediment recycling; Peat-free growing media; Strawberry productivity; Health risk assessment; QUALITY; GROWTH;
D O I
10.1016/j.scitotenv.2021.148803
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A marine sediment phytoremediated and homogenized by landfarming was tested for its potential recycle as growing media in horticulture. Two strawberry cultivars, Camarosa and Monterey, were grown on remediated sediment alone (TS100), commercial peat/pumice based growing medium (TS0) and a mixture 1:1 in volume of sediment and peat (TS50). Chemical fertility and strawberry production and safety of produced food were monitored for three consecutive productive seasons on the same growing media. During the first year of cultivation, plants grown on sediment-based media showed a significantly lower biomass production and fruit yield compared with peat, mainly due to the sediment low fertility. In the subsequent two years, the plant re-cultivation improved the sediment structure and N mineralization, and on the third cultivation year both strawberry cultivars showed higher fruit productivity and no accumulation of potentially toxic trace metals. The produced fruits did non accumulate high concentrations of trace metals, and risk assessment showed no risks for human health related to the consumption of strawberry produced on sediment-based growing media. We concluded that a phytoremediated sediment could be recycled as an ingredient of soilless growing media for reducing the environmental impact of plant nursery production and posing no risks for human health. These results show that reclaimed sediments could be reconsidered as a component material category in the new EU regulation on fertilizers. (c) 2021 Elsevier B.V. All rights reserved.
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页数:10
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