EFFECTS OF PHOSPHORUS APPLICATION ON PRODUCTTVITY AND NUTRIENT ACCUMULATION OF A <em>EUCALYPTUS</em> <em>UROPHYLLA</em> PLANTATION

Authors

  • D. Xu

Keywords:

Phosphorus fertilization, nutrient uptake, E. urophylla, utisols, Southern China

Abstract

Application of superphosphate at 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 return.

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Published

2022-06-28

How to Cite

D. Xu. (2022). EFFECTS OF PHOSPHORUS APPLICATION ON PRODUCTTVITY AND NUTRIENT ACCUMULATION OF A <em>EUCALYPTUS</em> <em>UROPHYLLA</em> PLANTATION. Journal of Tropical Forest Science (JTFS), 17(3), 447–461. Retrieved from https://jtfs.frim.gov.my/jtfs/article/view/1053

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Articles
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