Response to nitrogen of clarysage (Salvia sclarea) varieties in the hills of Himalayas. (67)


CIM Chandni

How to Cite

Response to nitrogen of clarysage (Salvia sclarea) varieties in the hills of Himalayas. (67). (2009). Tropical Agriculture, 86(2).


Field trial was conducted at CIMAP, Resource Centre, Pantnagar, Uttaranchal during 2004 - 05 to study the response of nitrogen levels (0, 40, 80, 120 and 160 kg/ha) on growth, yield and quality of oil in local and improved varieties of clarysage. Although both the varieties attained similar plant height, the improved variety CIM-Chandni produced a significantly greater number of branches, spikes per plant and florets per spike, spike length (26.2 cm) and inflorescence: plant ratio (0.534) and higher essential oil content (0.154 %). CIM-Chandni produced 15% more floral spikes and 47% more essential oil than the local variety which produced 163.0 q/ha floral spike and 17.6 kg/ha essential oil. Flower spikes and essential oil yields in both the varieties increased significantly with the increase in nitrogen rates up to 80 kg N /ha due to higher plant height, number of branches and spikes per plant and inflorescence : plant ratio. However, essential oil content was found to be higher in the spikes of control plots and to decrease gradually with increasing nitrogen levels. The response per kg N in terms of oil was 0.10 kg. Net return was Rs. 58011 and net return per rupee investment was Rs. 38.96 for var. CIM- Chandni, whereas the corresponding values for local variety were 0.06, 34521 and 23.35, respectively. The linalyl acetate and linalool content in essential oil increased up to 160 kg/ha N in both the varieties, while sclareol attained its highest peak at 80 kg N/ha especially in variety CIM-Chandni. Sclareol content in the local variety showed an increasing trend with each increment of nitrogen.