Phytoextraction of Cd and Zn with Thlaspi caerulescens in field trials

• DOI: 10.1111/j.1475-2743.2003.tb00295.x
• Publication Date: 2010-08-05T19:49:45Z
• Authors: D. Hammer; C. Keller
• Keywords: 2. Zero hunger; [SDE.IE]Environmental Sciences/Environmental Engineering; [SDE.IE] Environmental Sciences/Environmental Engineering; 01 natural sciences; 0105 earth and related environmental sciences

Abstract. Phytoextraction is the remediation of heavy metal contaminated soils using plants that take up metals. Hyperaccumulating such as Thlaspi caerulescens are often studied for their possible use decontamination Cd and Zn rich soils, but few field trials have been reported, although they necessary to validate results hydroponic pot studies. This article reports data T . grown on a calcareous an acidic soil, both 20 years ago by either atmospheric depositions or septic‐tank wastes. Accelerated cropping transplants three times in eight months was compared sown twice during same period. Both were followed one crop High concentrations plant shoots compensated low biomass production. Annual exports with transplanted 130 g ha −1 3.7 kg soil 540 soil. We concluded within framework Swiss legislation, Cd‐contaminated could be achieved less than 10 per year, differences properties affect rate phytoextraction significantly. Total content too high remediated realistic time span. did not decrease NaNO 3 ‐extractable fraction soils.