New Zealand Journal of Crop and Horticultural Science abstracts
Review
Significance of soil copper in the urban development of horticultural
soils
I. S. Cornforth
W. T. Bussell
J. R. Lewthwaite
UNITEC Institute of Technology
Private Bag 92 025
Auckland, New Zealand
email:chartridge@xtra.co.nz
Abstract In New Zealand, copper (Cu) applied to soils
in fertilisers, urban and animal wastes, or pesticides may increase Cu concentrations
from an average of 30 mg kg-1 to more than 10 times this value
and may restrict the development of treated areas for residential use. Guidelines
for assessing such possible hazards have been proposed by planning authorities.
The behaviour of Cu in soils, plants, and animals is reviewed to test the
validity of these guidelines. It is concluded that the potential risks associated
with Cu in horticultural soils are very much less than those implied by current
New Zealand guidelines.
Keywords copper; horticultural soils; toxicity; guidelines
H03025 Received 11 March 2003; accepted 8 July 2003; Online publication
date 3 November 2003
New Zealand Journal of Crop and Horticultural Science, 2003, Vol. 31:
293-302
0014-0671/03/3104-0293 $7.00 © The Royal Society of New Zealand
2003
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