Pedosphere 25(5): 680--685, 2015
ISSN 1002-0160/CN 32-1315/P
©2015 Soil Science Society of China
Published by Elsevier B.V. and Science Press
Comparative assessment of the effect of wastewater sludge biochar on growth, yield and metal bioaccumulation of cherry tomato |
M. K. HOSSAIN, V. STREZOV and P. F.
NELSON |
Department of Environmental Sciences, Faculty of Science
and Engineering, Macquarie University, Sydney NSW 2109
(Australia) |
ABSTRACT |
To investigate the potential effects of wastewater sludge
and sludge biochar on growth, yield and metal
bioaccumulation of cherry tomato ( Lycopersicon
esculentum L.), a pot experiment was carried out under
greenhouse environment with three different treatments,
control soil (CP), soil with wastewater
sludge (SS) and soil with sludge biochar (SB), to reveal the
comparative effect between the amendments of wastewater
sludge and sludge biochar. The soil used for pot experiment
was Chromosol. Wastewater sludge and sludge biochar
produced through pyrolysis process at 550 oC were
applied at 10 t ha-1. No significant difference was
found in growth and production of cherry tomatoes between
wastewater sludge and sludge biochar applications to the
soil. The accumulation rates of metals in the fruits were
lower in the treatment with sludge biochar than in the
treatment with wastewater sludge. The study highlights the
benefits of risk mitigation from toxic metal accumulation
in fruits using wastewater sludge and sludge biochar as
soil conditioners. |
Key Words: fruit yield, heavy metals, plant height, risk
mitigation, soil conditioner |
Citation: Hossain, M. K., Strezov, V. and Nelson, P. F. 2015. Comparative assessment of the effect of wastewater sludge biochar on growth, yield and metal bioaccumulation of cherry tomato. Pedosphere. 25(5): 680-685. |
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