the intercrop treatments reached a tappable girth (i.e.
50 cm) earlier than those in the sole crop. The proportion
of trees attaining a tappable girth exceeded 60%
(which is the standard used for commencing commercial
tapping) before 5 years after planting in all
intercrop treatments, whereas the sole crop rubber
required an additional 4 months (Table 4). Not only
in sampled trees, but in all trees, earlier tappability of
intercropped rubber was evident from girth measurements