Published in Scientific Papers. Series A. Agronomy, Vol. LXI, Issue 1
Written by Nicoleta MĂRIN, Nicoleta VRÎNCEANU, Naliana LUPAȘCU, Mihail DUMITRU
The degree of soil loading with heavy metals (Cd, Cu, Mn, Ni, Pb, Zn) has been studied after 39 years of fertilization with nitrogen and phosphorus on a Faeoziom cambic soil in Drăgăneşti-Vlasca village in Teleorman. Nitrogen from nitrogen nitrate was applied at doses of 0, 50, 100, 150, 200 kgN/ha, and phosphorus from superphosphate at doses of 0, 40, 80, 120, 160 kg P/ha. The soil samples were harvested at a depth of 0-20 cm after harvesting the wheat crop. The heavy metal content did not suffer statistically significant changes following long-term fertilization with mineral fertilizers with nitrogen and phosphorus. No cadmium accumulation process was observed following the application of doses of 40-160 kg/ha P205 annually for 39 years. The cadmium values in the soil oscillated between 0.9 and 1.2 mg/kg, the loading level being assessed as normal-weak, the copper values were in the low loading range, the manganese is within the range of normal-weak, and copper and manganese in the soil content are within the normal range.
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