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Effects of phosphorus application on productivity and nutrient accumulation of a eucalyptus urophylla plantation

By D. Xu, B. Dell, Z. Yang, N. Malajczuk and M. Gong

Abstract

Application of superphosphate al establishment as basal fertilizer increased tree growth and survival of Eucalyptus urophylla in a 4.5-year-old trial near Gaoyao, Guangdong, China. It also increased P and N concentrations in young fully expanded leaves at one year and biomass in all tree components. The addition of 20, 50 and 200 kg P ha-1 increased stand volume by five to seven times of the mean annual increment of trees without P. The more P applied, the higher the percentage of stemwood and the lower the relative allocation of biomass belowground. The low P concentrations in leaves and roots at 20 kg P ha-1 at year 4.5 suggested the withdrawal of P from the biomass, through internal cycling. The addition of P increased N, P, K, Ca and Mg uptake. The 200 kg P ha-1 treatment was optimal both for wood chip production and economic retur

Publisher: Forest Research Institute Malaysia
Year: 2005
OAI identifier: oai:researchrepository.murdoch.edu.au:16057
Provided by: Research Repository
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