Abstract:In this work, the physiological responses and leaf uptake of Cu, Cr, Fe, Pb and Zn were evaluated during the initial growth of Italian ryegrass with addition of urban sewage sludge (LE) and its relationship with the foliar levels of organic acids (OA) obtained by a simple extraction method, using only water as solvent and with less extraction time. The minimum and maximum contents (mg kg-1) found in Italian ryegrass leaves after 14 days in contact with the sludge (Cu: 12.6-21.2; Cr: 26.9-130; Fe: 395.9-6171 an… Show more
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