Vol. 10, Issue 12 (2021)

Author(s):
Siddarth S Shivayagol, CK Venugopal, Ramangouda V Patil and Bhuvaneshwar R Patil

Abstract:
A field experiment was conducted to study the effect of zinc on growth, oil yield and economics of patchouli [Pogostemon patchouli (Blanco) Benth.] variety Johore at Medicinal and Aromatic Plants Unit, Saidapur Farm, Department of Horticulture, College of Agriculture, University of Agricultural Sciences, Dharwad during 2018-19. The experiment was laid out in Randomized Block Design with three replications. In this study significant differences were found among different doses and methods of zinc application to crop on growth, oil yield and economics. Among all treatments, treatment with application of RDF + ZnSO₄ @ 25 kg ha^-1 + ZnSO₄ @ 0.5 per cent recorded higher values in growth parameters, which includes like plant height (93.93 cm), number of primary branches (15.20), number of secondary branches (43.47), number of leaves (528.13), leaf area (48.24 dm²/plant) and leaf area index (1.79) at the time of harvest. The same treatment also recorded the higher values with the yield parameters like dry herbage yield (2.63 t/ha), oil content (1.53%), oil yield (40.17 kg/ha) and B:C ratio (2.33).