In aquaponic treatment, the lowest
fresh weight was produced on only perlite and
only cocopeat planting bed and the highest one
on planting beds of 25% perlite + 75% cocopeat
and 75% perlite + 25% cocopeat (Fig. 2). The
increase in the ration of perlite to cocopeat in
planting bed increases the available oxygen in
culture medium but the reverse decreases oxygen
and increases water; on the other hand, low moisture
holding capacity in perlite bed brings about
moisture stress and decreases vegetative growth
compared with the other beds. In the hydroponic
treatment, fresh weight of leaf, crown and root
increased as the ratio of perlite to cocopeat decreased
(Fig. 2).