Five replicate ingrowth cores per treatment were randomly placed in
each sub-plot, resulting in a total of 15 replicate ingrowth cores per
treatment which were pooled in the statistical analysis. The inspec-
tion of a number of additional ingrowth cores in the period from
August 2005 to early 2006 showed that, at 1050 m, first root
ingrowth started by the end of February 2006; at 3060 m, fine root
ingrowth did not commence before mid-May 2006