Effect of Harvesting Stages on Herbage and Essential Oil Yield of Rosemary (Rosmarinus Officinalis L.) under Northern Dry Zone of Karnataka, India
Kune Lavanya *
Department of Plantation Spices, Medicinal and Aromatic crops in College of Horticulture, Bagalkot, University of Horticultural Sciences, Bagalkot- 587104, Karnataka, India.
Vijayakumar B. Narayanapur
Department of Plantation Spices, Medicinal and Aromatic crops in College of Horticulture, Bagalkot, University of Horticultural Sciences, Bagalkot- 587104, Karnataka, India.
Y. C. Vishwanath
Department of Plantation Spices, Medicinal and Aromatic crops in College of Horticulture, Bagalkot, University of Horticultural Sciences, Bagalkot- 587104, Karnataka, India.
Vasant M. Ganiger
Department of Vegetable Science and Division Head, Farmers Training Centre Office of the Directorate of Extension, University of Horticultural Sciences, Bagalkot- 587104, Karnataka, India.
Laxman Kukanoor
Department of Postharvest Management and Associate Director Research extension (Central Zone) RHREC (Kumbapur), Dharwad- 580020, Karnataka, India.
V. M. Chandrashekar
Department of Pharmacology, BVS HSK College of Pharmacy, Bagalkot-587104, Karnataka, India.
Mohammed Farooq
Department of Plantation Spices, Medicinal and Aromatic crops in College of Horticulture, Bagalkot, University of Horticultural Sciences, Bagalkot- 587104, Karnataka, India.
*Author to whom correspondence should be addressed.
Abstract
Aim: To study the effect of different phenological stages of harvesting on the yield and quality of rosemary.
Study Design: Fisher’s method of ANOVA.
Place and Duration of Study: Department of Plantation, Spices, Medicinal and Aromatic Crops, College of Horticulture, Bagalkot, Karnataka during rabi 2023-24.
Methodology: The experiment was laid out in Randomized Complete Block Design with five replications, comprising five different stages of harvesting namely vegetative stage, flower initiation stage, fifty per cent flowering stage, full bloom stage and seed setting stage.
Results: The maximum mean fresh herbage yield (589.79 g plant-1, 14.74 kg plot-1 and 13.54 t ha-1) and dry herbage yield (308.40 g plant-1, 7.71 kg plot-1 and 7.08 t ha-1) were noticed at the seed setting stage. Whereas the superior essential oil content (1.51 %) was viewed at the vegetative stage. The greater essential oil yield (129.34 kg ha-1) was observed at the full bloom stage, which was on par with the seed setting stage (127.20 kg ha-1) and fifty per cent flowering stage (118.11 kg ha-1).
Conclusion: Fifty per cent flowering stage can be considered as suitable harvesting stage of rosemary under northern dry zone of Karnataka.
Keywords: Harvesting stages, rosemary, yield, quality, essential oil