Impact of different hardening substrate on growth of in vitro raised plantlets of orchids (Dendrobium nobile)

The present investigation was done on impact of different hardening substrates growth in vitro raised plantlets with objective to standardize media for acclimatization orchid plantlets. research laid out Completely Randomized Design (CRD) combination 16 treatments containing charcoal, brick, cocopeat, bark, rice husk, groundnut shell, chopped coconut husk and paddy straw all replicated thrice analyzing the effect under poly house condition. Among treatments, T8 (chopped + brick charcoal cocopeat) had superior result almost considerable aspects study than other including control. results revealed that cocopeat been beneficial significantly increase vegetative can be recommended orchids.