Effect of plant growth regulators and growing media on growth performance of Stevia rebaudiana Bertoni and Lavandula angustifolia L. cuttings
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Date
2021
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College of Forestry, Ranichauri Campus, V.C.S.G. Uttarakhand University of Horticulture and Forestry
Abstract
Title: “Effect of plant growth regulators and growing media on growth performance of Stevia rebaudiana Bertoni and Lavandula angustifolia L. cuttings.”
The present investigation was conducted in Medicinal and Aromatic plants section of College of Forestry, V.C.S.G Uttarakahand University of Horticulture and Forestry, Ranichauri, Tehri Garhwal, Uttarakhand, during September 2019 to March 2020 to investigate the effect of plant growth regulators and growing media on growth performance of Stevia and Lavender. Different concentrations (1000 ppm, 1500 ppm, 2000 ppm & 2500 ppm) of IBA and NAA significantly affected the growth performance of Stevia rebaudiana Bertoni and Lavandula angustifolia L. In case of Stevia, 2000 ppm IBA recorded the maximum survival percentage (80.66%), number of roots (52.33), root length (23.65 cm) rooting percentage (84.33%), fresh weight of roots (6.69 gm) and dry weight of roots (1.00 gm) while 2000 ppm NAA recorded maximum number of sprouts (9.88), number of leaves (39.21), fresh weight of shoots (14.32 gm) and dry weight of shoots (1.12 gm) at 180 DAP whereas in Lavender 2000 ppm IBA concentration recorded the maximum survival percentage (76.33%), number of leaves (50.66), number of roots (44.99), root length (20.87 cm), rooting percentage (78.66%), fresh weight of roots (2.0 gm) and dry weight of roots (0.96 gm) while 2000 ppm NAA recorded maximum number of sprouts (10.44), fresh weight of shoots (7.74 gm) and dry weight of shoots (1.02 gm) at 180 DAP. Different growing media (Coco peat, Vermicompost and soil) significantly affected the growth performance of Stevia and Lavender cuttings. In case of Stevia rebaudiana Bertoni soil and coco peat mixture (1:1) recorded maximum survival percentage (79.33 %), root length (17.90 cm), number of roots (44.66), rooting percentage (80.33%), fresh weight of shoots (12.13 gm) and dry weight of shoots (1.01 gm) while cocopeat and vermicompost mixture (1:1) recorded maximum number of sprouts (8.55) number of leaves (35.99), fresh weight of roots (3.03 gm) and dry weight of roots (0.9 gm) per cuttings at 180 DAP. In Lavandula angustifolia L. cocopeat and vermicompost mixture (1:1) recorded maximum survival percentage (80.66 %), number of leaves (44.77), number of roots (50.77), fresh weight of shoots (7.17 gm) and dry weight (1.01gm) of shoots while soil and cocopeat mixture (1:1) recorded maximum number of sprouts (8.44), root length (19.66 cm) rooting percentage (77.66%) fresh weight of roots (2.00 gm) and dry weight of roots (1.01 gm) at 180 DAP. The study concluded that application of IBA and NAA in Stevia and Lavander cuttings enhanced the growth performance but IBA of 2000 ppm concentration and NAA 2000 ppm showed better performance. While in case of growing media, soil and cocopeat mixture and cocopeat and vermicompost mixture showed better growth performance in both the aromatic plants.
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M.Sc. Forestry