Demonstrational gardens with EDTA-washed soil. Part II, Soil quality assessment using biological indicators

Kaurin, Anela (author), Gluhar, Simon (author), Maček, Irena (author), Kastelec, Damijana (author), Leštan, Domen (author)

In this study, we evaluated the impact of washing of Pb, Zn and Cd contaminated soil using EDTA-based technology (ReSoil®) on soil biological properties by measuring some of the most commonly used/sensitive biological indicators of soil perturbation. We estimated the temporal dynamics of the soil respiration, the activities of soil enzymes (dehydrogenase, β-glucosidase, urease, acid and alkaline phosphatase), and the effect of the remediation process on arbuscular mycorrhizal (AM) fungi in original (Orig), remediated (Rem) and remediated vitalized (Rem+V) soils during a more than one-year garden experiment. ReSoil® technology initially affected the activity level of soil microbial respiration and all enzyme activities except urease and reduced AM fungal potential in the soil. However, after one year of vegetable cultivation and standard gardening practices, soil microbial respiration, acid and alkaline phosphatase in the Rem and Rem+V reached similar activities as in the Orig. Only the activities of dehydrogenase and β-glucosidase remained lower in the remediated soil compared to the Orig. The frequency of arbuscular mycorrhiza in the root system, arbuscular density in the colonized root fragment, and the intensity of mycorrhizal colonization in the colonized root fragments in the remediated treatments increased with time; at the end of the experiment, no consistent differences in these parameters of mycorrhizal colonization were found among the treatments. Our results suggest a restored biological functioning of the remediated soil after one year of vegetable cultivation. In general, no differences were found between the Rem and Rem+V treatments, indicating that simple common garden practices are sufficient to restore soil functioning after remediation.

• Language: English
• Keywords: remediated soil, enzyme activity, microbial respiration, arbuscular mycorrhiza, soil biological properties, soil functioning
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: BF - Biotechnical Faculty
• Publication status: Published
• Publication version: Version of Record
• Year: 2021
• Number of pages: 9 str.
• Numbering: Vol. 792, art. 148522
• PID: 20.500.12556/RUL-133182
• UDC: 631.4
• ISSN on article: 0048-9697
• DOI: 10.1016/j.scitotenv.2021.148522
• COBISS.SI-ID: 68311811
• Publication date in RUL: 16.11.2021

Record is a part of a journal

• Title: Science of the total environment
• Shortened title: Sci. total environ.
• Publisher: Elsevier
• ISSN: 0048-9697
• COBISS.SI-ID: 26369024

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: čiščenje tal, pranje tal, talni encimi, talni mikroorganizmi, vrtnine, remediacija, očiščena tla, biološke lastnosti tal, arbuskularna mikoriza, težke kovine, svinec, cink, kadmij, kemična sestava, varna hrana

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: J4-8219
• Name: Vrtovi z remediiranimi tlemi: zmanjševanje tveganja in pridelava varne hrane