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Abstract
The present study was designed to investigate the effect of micronutrients (Fe, B, Zn, Mn, Cu and Mo) on vegetative growth and essential oil contents of Tulsi (Ocimum sanctum). The concentrations of the primary nutrients (N, K and P) and secondary nutrients (Ca, Mg and S) were kept constant while concentrations of the micronutrients (Fe, B, Zn, Mn, Cu and Mo) were varied during different experimental trials. The effects of different concentrations of these micronutrients on the growth, herb weight and essential oil contents were studied. There was a considerable difference in the growth and herb weight of Ocimum sanctum under investigation due to the influence of different concentrations of micronutrients. It was concluded that application of 0.05–0.06 ppm of copper along with 0.10 ppm zinc could improve the essential oil and fresh herb yield of Ocimum sanctum plant.