Influence of some soil parameters on heavy metals accumulation by vegetables grown in agricultural soils of different soil orders.
The main purpose of this research was to determine the levels of heavy metals in tomato, potato and lettuce, grown in agricultural soils of different soil orders (Alfisols, Endisols and Vertisols), located at Central Greece. Soil samples were analysed for available forms (after extraction with DTPA) and for total concentrations (after digestion with Aqua Regia) of metals. Zn, Cu, Cr and Ni were the common metals detected in the vegetables studied. Pb and Cd concentrations were low and in some cases not detectable. Significant correlations among metals concentrations and soil physicochemical parameters were obtained and discussed. The pH value and the percentage of clay content were found to determine the solubility of metals in the soil and their availability for uptake by plants.
Golia
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EE
Department of Agriculture, Crop Production and Rural Environment, Laboratory of Soil Science, University of Thessaly, Fytokou Road, 38 446 N. Ionia, Magnisias, Greece. egol@uth.gr
Dimirkou
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A
Mitsios
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IK
D006115:Greece; D006863:Hydrogen-Ion Concentration; D018545:Lactuca / Q000737:chemistry / Q000378:metabolism; D018551:Solanum lycopersicum / Q000737:chemistry / Q000378:metabolism; D019216:Metals, Heavy / Q000032:analysis*; D018515:Plant Leaves / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D012822:Silicon Dioxide; D012987:Soil / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis*; D011198:Solanum tuberosum / Q000737:chemistry / Q000378:metabolism; D014675:Vegetables / Q000737:chemistry*
D019216:Metals, Heavy; D012987:Soil; D012989:Soil Pollutants; D012822:Silicon Dioxide