STANDARDIZATION OF MEDIA, BIOSTIMULANTS AND DRYING TECHNIQUES IN DENDROBIUM ORCHID (Dendrobium nobile Lindl.) VAR. SONIA-17 UNDER PROTECTED CULTIVATION
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Date
2019-11-11
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K.R.C COLLEGE OF HORTICULTURE, ARABHAVI (UNIVERSITY OF HORTICULTURAL SCIENCES, BAGALKOT)
Abstract
The studies on standardization of media, biostimulants and drying techniques in Dendrobium orchid (Dendrobium nobile Lindl.) var. Sonia - 17 under protected cultivation were carried out during 2017-19 with three different objectives. The experiments on standardization potting media and biostimulants were carried out at farmer’s field, Chapparamane, Sirsi and were laid out in Completely Randomized Design. Three month old tissue cultured plants were used for the study. Among different potting media studied, the combination of charcoal + tile pieces + maize rind pieces produced stronger plants with maximum plant height (24.35 cm), number of leaves (15.50), number of pseudobulbs (4.35), spike yield per plant (3.68), spike length (42.87 cm) and benefit cost ratio (1.75) when compared to other media.
In recent decades, flower growing pattern is evolving towards organic way. In this concern, biostimulants had significant effect on growth and yield of Dendrobium orchid var. Sonia - 17. The foliar application of Biovita (sea weed extract) at the rate of 1.5 percent showed maximum plant height (38.05cm), number of leaves (18.89), leaf area (770.73 cm2), number of pseudobulbs (5.05), earliness in spike initiation (162.93 days), maximum spike yield per plant (3.93 numbers), spike length (45.89 cm), vase life (32.75 days) and net returns ( 3, 01, 473.4) compared to other treatments.
The experiment on standardization of drying techniques was carried out at Department of Floriculture and Landscape Architecture, College of Horticulture, Sirsi and was laid out using Completely Randomized Factorial Design. The results revealed that drying of florets in hot air oven at 45 oC for 48 hours using silica gel as desiccant removed moisture uniformly and scored maximum valuesfor colour, shape, texture and overall appearance (4.34, 4.45, 4.54 and 4.70, respectively). With respect to microwave oven drying,the florets dried in silica gel for 3 minutes enhanced the scores for quality attributes like colour, shape, texture and overall appearance (4.01, 3.97, 4.17 and 4.33, respectively).
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