Efficacy of biostimulants on growth and flowering of Dendrobium orchid (Dendrobium nobile Lindl.) var. Sonia-17 under protected cultivation

Studies on efficacy of biostimulants on growth and flowering of Dendrobium orchid var. Sonia - 17 under protected cultivation were carried out at farmers’ field, Chapparamane during 2017-19. Eight biostimulants in two combinations were taken for the study and RDF was taken as control. The results revealed that among the biostimulant treatments, the treatment receiving Biovita (Brown sea weed extract) @ 1.5 per cent showed maximum plant height, number of leaves, leaf length, leaf width, leaf area, number of pseudobulbs, pseudobulb perimeter, days taken for bud initiation, days taken for spike emergence to first floret opening and final harvest compared to all other treatments and control (RDF).