Accumulation of Zn, Cd, Cu, and Pb in Chinese cabbage as influenced by climatic conditions under protected cultivation
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Moreno, Diego A.; Villora, Gemma; Hernández Rodríguez, Joaquín; Castilla Prados, Nicolás; Romero, LuisFecha
2002Resumen
Accumulation of heavy metals from agricultural soils contaminated by low levels heavy metals has important implications in the understanding of heavy metal contamination in the food chain. Through field experiments (1994-1996), the influence of thermal regime under different treatments on the accumulation of zinc, cadmium, copper, and lead in Chinese cabbage [Brassicapekinensis (Lour) Rupr. cv. Nagaoka 50] grown in a Calcareous Fluvisol (Xerofluvent) in Granada (southern Spain) was examined. Two floating row covers were used: T1 (perforated polyethylene, 50 µm thick) and T2 (17 g m-2 polypropylene nonwoven fleece). An uncovered cultivation (T0) served as control. Zn, Cd, Cu, and Pb levels in the whole tops of experimental plants were analyzed. Treatments T1 and T2 gave rise to differences in environmental conditions with respect to T0. The influence of environmental factors manipulated by floating row covers (particularly under T1) increased total heavy metal accumulation in the aboveg...
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Brassica pekinensis
Heavy metals
Temperature
Phytoremediation