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Wolverhampton Intellectual Repository and E-Theses > School of Applied Sciences > Research Centre in Applied Sciences  > Plant and Environmental Research Group > Does sewage sludge amendment to soil enhance the development of Silver birch and Scots pine?

Please use this identifier to cite or link to this item: http://hdl.handle.net/2436/120605
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Title: Does sewage sludge amendment to soil enhance the development of Silver birch and Scots pine?
Authors: Vaitkute, Dovile
Baltrenaite, Edita
Booth, Colin A.
Fullen, Michael A.
Citation: Hungarian geographical bulletin, 59(4): 393-410
Publisher: Geographical Research Institute, Hungarian Academy of Sciences
Journal: Hungarian geographical bulletin
Issue Date: 2010
URI: http://hdl.handle.net/2436/120605
Additional Links: http://www.mtafki.hu/konyvtar/hungeobull2010_4_en.html
Abstract: Sewage sludge can be used to improve forestry soil properties, because it is rich in phosphorus, nitrogen and organic material and, thus, can enhance the growth of tree seedlings in poor quality soils. Our study was performed on a site amended with industrial sewage sludge and afforested with birch and pine seedlings. To evaluate the growth of tree seedlings, tree dry biomass, height, diameter, root/shoot ratio, specific root length, shoot and root length was calculated. Higher concentrations of heavy metals and no significant increase in the biomass of trees on sewage sludge amended soil suggest an inhibitory effect of heavy metals on tree biomass growth. The site treated with sewage sludge had significantly higher soil moisture content, soil pH, total copper and total lead concentrations and significantly lower exchangeable acidity. Tree tissues at the sewage sludge treated site contain significantly higher concentrations of copper and cadmium. Therefore, both positive and negative impacts of treatment are appparent. In terms of management strategies, it is recommended that the chemical quality of sewage sludge is analyzed prior to possible field applications and only sewage sludge with toxic heavy metal concentrations below accepted safety limits are applied.
Type: Article
Language: en
Keywords: Betula pendula Roth.
Biomass
Pinus sylvestris L.
Heavy metals
Root/shoot ratio
Sewage sludge
Specific root length
Appears in Collections: Plant and Environmental Research Group

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