Nutrient and toxic element soil concentrations during repeated mineral and compost fertilization treatments in a Mediterranean agricultural soil
| Autor: | Giovanni Saviello, Luigi Morra, Daniela Baldantoni, Anna Alfani |
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| Rok vydání: | 2016 |
| Předmět: |
Health
Toxicology and Mutagenesis Context (language use) 010501 environmental sciences engineering.material complex mixtures 01 natural sciences Total and bioavailable element concentrations Nutrient Human fertilization Soil Pollutants Environmental Chemistry Ecotoxicology Fertilizers 0105 earth and related environmental sciences Soil long-term dynamics Minerals NPK fertilization Biowaste compost amendment Mixed fertilization Correlations between total and available concentrations Compost Agriculture 04 agricultural and veterinary sciences General Medicine Pollution Soil conditioner Agronomy Metals Soil water 040103 agronomy & agriculture engineering 0401 agriculture forestry and fisheries Environmental science Soil fertility |
| Zdroj: | Environmental Science and Pollution Research. 23:25169-25179 |
| ISSN: | 1614-7499 0944-1344 |
| DOI: | 10.1007/s11356-016-7748-0 |
| Popis: | Agricultural soils of semi-arid Mediterranean areas are often subjected to depletion of their chemical, physical, and biological properties. In this context, organic fertilization, in addition to providing nutrients for a longer time in respect to mineral fertilization, improves many other characteristics related to soil fertility. Moreover, the combined use of organic and mineral fertilizers may promote a more sustainable crop production. However, a concern on the long-term use of organic fertilizers arises in relation to the possible accumulation of toxic elements in soil and their transfer to human beings. For this reason, a long-term study on nutrient and toxic element total concentrations and availabilities during fertilization treatments was carried out. In particular, mineral NPK fertilized soils, soils amended with biowaste compost, soils amended with biowaste compost plus mineral nitrogen, and unfertilized soils were analyzed for 11 chemical elements. The results highlighted that temporal variations in total and bioavailable concentrations of both nutrients and toxic elements, occurring also in unfertilized soils, are wider than those related to fertilization treatments. Anyway, soil amendments with biowaste compost, alone or in combination with mineral fertilizers, reduce Cu bioavailability but improve K, Fe, Mn, and Zn availabilities, excluding at the same time a long-term accumulation in soil. Total and bioavailable toxic element concentrations (apart from available Cd) do not vary in relation to fertilization treatments. |
| Databáze: | OpenAIRE |
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