Pratap Toppo

The present study was conducted to evaluate the impact of different plant growth regulators (PGRs) on the yield attributes of patchouli (Pogostemon cablin) cultivated under a Shisham (Dalbergia sissoo)-based agroforestry system. The experiment was laid out in a Randomized Block Design with eight treatments, including various concentrations of NAA, Miraculan, GA, and Kinetin, along with a control. Plant growth regulators were applied as foliar sprays during the early vegetative stage, and standard agronomic practices were followed uniformly across treatments. Data on fresh weight, dry weight, and essential oil content were recorded at harvest and analyzed statistically. Results indicated significant differences among treatments, with NAA @ 20 ppm and Kinetin @ 200 ppm showing superior performance in terms of fresh biomass and oil yield. Miraculan @ 100 ppm recorded the highest dry weight. The findings suggest that appropriate application of PGRs under agroforestry systems not only enhances growth and yield attributes of patchouli but also contributes to sustainable utilization of interspaces in tree-based farming systems. This approach offers a promising strategy for improving productivity and profitability in medicinal and aromatic plant cultivation.

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