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Research Article

Foliar Nutrient Composition of 19 Tree Species Grown on a Phytocapped Landfill Site

Venkatraman K1* and Ashwath N2
1East Gippsland Shire Council, 273 Main Street, Bairnsdale, Victoria 3875, Australia
2School of Medical and Applied Science, CQ University, Rockhampton, Qld 4702, Australia
*Corresponding Author : Venkatraman K
East Gippsland Shire Council, 273 Main Street
Bairnsdale, Victoria 3875, Australia
E-mail: kartikv@egipps.vic.gov.au (or) waste1977@gmail.com
Received: February 09, 2016; Accepted: March 10, 2016; Published: March 15, 2016
Citation: Venkatraman K, Ashwath N (2016) Foliar Nutrient Composition of 19 Tree Species Grown on a Phytocapped Landfill Site. J Bioremed Biodeg 7:357. doi:10.4172/2155-6199.1000357
Copyright: © 2016 Venkatraman K, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

An alternative landfill capping technique ‘Phytocapping’ (establishment of perennial plants on a layer of soil placed over the waste) was trailed at Rockhampton, Australia, as it is eco-friendly, less expensive and socially acceptable. In this capping, trees are used as ‘Bio-pumps and Screens’ and soil cover as ‘Storage’. They together minimise water percolation leading to reduced leachate production. Twenty one tree species were grown on two depths of soil (700 mm and 1400 mm) and monitored for their growth and their ability to restrict water infiltration through the waste. A very common question raised by most scientist and engineers is growth and survival of tree species in a landfill environment. Hence to determine the conditions and health of the tree species, foliar and foliar litter nutrient concentrations were measured in all the tree species grown on the phytocapped landfill site. The 3 year-old trees showed slightly elevated levels of nutrient and this will continue as the trees mature and develop more roots. The trees in the 700 mm soil cover contained slightly higher leaf concentrations of nutrients due to the possible closer proximity of their roots to the waste. 

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