Abstract:
Scarcity of good quality planting materials is one of the main problems in development of
medicinal plant industry and kollankola (Pogostemon heyneanus) is one of the vital medicinal
plants facing this problem today. Present study was focused on selection of suitable growing
media and cutting types as well as checks the effect of hormone on root formation of this
imperative species. For the purpose, survival percentage, percentage of rooted cuttings,
number of roots and average root length were determined using two separate experiments.
Results revealed that the significantly (P<0.05) higher survival percentage, higher rooted
cuttings percentage, higher number of roots and higher root length were recorded in sand:
compost: coir dust (1:1:1) mixture, while hormone treated semi hardwood cuttings had
significantly (P<0.05) higher number of roots, higher root length, higher survival percentage
and higher rooted cuttings percentage. These findings suggest that hormone treated semi hardwood stem cuttings planted in sand: compost: coir dust (1:1:1) associated with successful
rooting of kollankola. Further, this information will be useful not only in large scale
cultivation of kollankola but also ensure the existence of this valued species within the
ecosystem.
