171876.fig.006a
(a)
171876.fig.006b
(b)
171876.fig.006c
(c)
Figure 6: Effects of the fertilizer application on tree heights of June 2002, January 2003, Jun 2003, January 2005, and October 2005. Error bars denote standard deviation. Different letters are significantly different at by the Tukey-Kramer test.