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Water 2014, 6(5), 1246-1256; doi:10.3390/w6051246

Response of Vegetables to Cadmium-Enriched Soil

1 Department of Civil and Environmental Engineering, University of Delaware, Newark, DE 19716, USA 2 Civil Engineering Research Group, School of Computing, Science and Engineering, The University of Salford, Newton Building, Salford M5 4WT, England, UK
* Author to whom correspondence should be addressed.
Received: 13 January 2014 / Revised: 29 April 2014 / Accepted: 29 April 2014 / Published: 7 May 2014
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Environmental and water pollution through heavy metals is a growing concern. The recycling of untreated wastewater, which is often contaminated with heavy metals, for agricultural applications is becoming more popular. However, information on the amount of absorption and accumulation of cadmium (Cd) at variable concentrations by different crops is limited. This study aims to analyze the impact of various Cd concentrations (0, 30, 60 and 120 mg/kg) in the root zone on the quantity of its absorption as well as accumulation in various parts of seven different types of common vegetables. The experiments were carried out under laboratory-like controlled conditions. Four treatments and three replicates were selected. Cadmium accumulation exceeded the permissible limits for human consumption, and its accumulation in different plant parts followed this order: Leaves: broccoli > spinach > basil > garlic > carrot > tarragon > dill. Stems: broccoli > spinach > basil > garlic > tarragon > carrot > dill. Roots: broccoli > garlic > basil > spinach > carrot > dill > tarragon. Therefore, the authors recommend the reuse of treated wastewater, which should be virtually free of contaminants such as heavy metals, to irrigate farm lands in the future.
Keywords: basil; broccoli; cadmium; carrot; garlic; irrigation; metal accumulation; spinach; tarragon; treated wastewater basil; broccoli; cadmium; carrot; garlic; irrigation; metal accumulation; spinach; tarragon; treated wastewater
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Bakhshayesh, B.E.; Delkash, M.; Scholz, M. Response of Vegetables to Cadmium-Enriched Soil. Water 2014, 6, 1246-1256.

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