Abstract

The experiment was
conducted at the "Alfredo Volio Mata" Experiment Station of
the University of Costa Rica. The asexual seed was extracted
from an established plantation that was harvested during four
years with pruning intervals of 56-112 days. The selected
branches were divided into three cuttings, 40 cm long with at
least three buds in the basal, medial and apical parts of each
branch. The highest percentage of rooting and sprouting in a
35-day period was observed in the 112 day-old cuttings: 9%
sprouts, 12% roots and 31% with both sprouts and roots. The
optimum age of the branch to obtain maximum sprouting and
rooting was estimated at 117 days. The cuttings taken from
the basal and medial portions of the branch had 10% more
sprouts and roots than the cuttings taken from the apical part.
There were noticeable differences between the application or
not of IBA (P≤0.01). Depending on the age of the cutting
and the part of the branch it was taken from, the use of IBA
caused an 11 to 15% increase in total sprouting.