Metal concentrations in edible mushrooms following municipal sludge application on forest land
2006
Benbrahim, Mohammed | Denaix, Laurence | Thomas, Anne-Laure | Balet, Julie | Carnus, Jean-Michel | Unité de recherches forestières (BORDX PIERR UR ) ; Institut National de la Recherche Agronomique (INRA) | Transfert Sol-Plante et Cycle des Eléments Minéraux dans les Ecosystèmes Cultivés (TCEM) ; Institut National de la Recherche Agronomique (INRA)-École Nationale d'Ingénieurs des Travaux Agricoles - Bordeaux (ENITAB) | Unité de service et de recherches en analyses végétales et environnementales (USRAVE) ; Institut National de la Recherche Agronomique (INRA)
International audience
Afficher plus [+] Moins [-]anglais. In the context of biosolids utilisation in forestry, effects of sludge application on mushroom metal concentration were studied in six sites of maritime pine forests in the South-West of France. Municipal sludge were applied at a rate of 6 T dry matter per hectare. Edible mushrooms were collected two years after sludge application. As, Cd, Cu, Hg, Pb, Se and Zn concentrations were determined. Results showed a high variability for trace element concentrations in mushrooms collected from control areas. No significant correlation was found between soil parameters (pH and trace elements concentrations) and mushroom trace element concentrations. Even if the concentration of trace metals increased in the soils, sludge application did not affect As, Cu, Se and Zn concentrations in carpophores but slightly increased Cd, Pb and Hg concentrations on some sites. This effect is dependent on sludge type and sites
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