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The uptake of zinc and copper by tomato plants grown in secondary treated wastewater

Levitan, J. and Nair, J. (2009) The uptake of zinc and copper by tomato plants grown in secondary treated wastewater. In: Nair, J., Furedy, C., Hoysala, C. and Doelle, H., (eds.) Technologies and Management for Sustainable Biosystems. Nova Science Publisher, New York, pp. 63-73.


The effects of copper (Cu) and zinc (Zn) on the growth of tomato plants when grownin hydroponics were tested; whether the Cu and Zn is taken up into the tomato fruits totoxic levels; and to determine the suitability of both secondary treated wastewater and Cuand Zn contaminated water as a nutrient source for tomato plants. Good yields of tomatofruit were observed on the plants grown in the control media (CM), the Cu spiked media(0.5mg/L and 1.5mg/L Cu spiked) and the Zn spiked media (2.2mg/L and 2.6mg/L Znspiked), whereas the secondary treated wastewater (WW) did not produce adequate yieldsand the plant growth was stunted. The stunted growth in the WW plants was found to bemore likely due to lack of macronutrients rather than the presence of Cu and Zn. In allmedia, accumulation of Cu and Zn was observed to be more in the roots than in the fruits.The use of Cu and Zn contaminated nutrient sources could be feasible, but there is stillcause for concern as the ability of the tomato plants to accumulate potentially toxic levelsof Cu and Zn is possible.

Item Type: Book Chapter
Murdoch Affiliation(s): Environmental Technology Centre
Publisher: Nova Science Publisher
Copyright: © 2009 Nova Science Publishers Inc.
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