Ecology, Environment and Conservation Paper

Vol. 21 Dec. 2015 Suppl. Issue; Page No.(7-15)

NITROGEN AND PHOSPHORUS IMPROVE GROWTH, SEED AND ESSENTIAL OIL PRODUCTIVITY IN OCIMUM BASILICUM

Ritesh Bhandari, Gyanendra Tiwari , R.P. Patel and D.K. Patidar

Abstract

Experiments were conducted on Ocimum basilicum with five levels of nitrogen (0, 50,100,150 and 200 kg/ ha) and four levels of phosphorus (0, 30, 60 and 90 kg/ha) in a split plot design with three replications during rainy seasons 2009-10 and 2010-11. Growth attributes like plant height, number of primary and secondary branches per plant linearly increased with advancement of crop age. Nitrogen @ 150 and phosphorus @ 60 kg per were found effective in increasing plant height, root length and branching, number of leaves per plant, leaf area, leaf biomass, number of inflorescence, inflorescence length and inflorescence biomass. Leaf biomass (q/ha) were maximum with sole application of nitrogen (200 kg/ha) and phosphorus (60 kg/ha). Stem biomass (q/ha) responded up to 150 kg nitrogen and 90 kg/ha phosphorus. Inflorescence biomass and root length was maximum with 150 and 30 kg/ha nitrogen and phosphorus. Maximum seed yield of was found 14.81 and 15.29 q/ha was found respectively with 100 kg nitrogen and 60 kg phosphorus per ha. Essential oil content (%) and essential oil yield (kg/ha) were decreased with advancement of crop age after flower initiation. At 45 and 75 DAP, nitrogen and phosphorus application reduced essential oil (%) content and yield (kg/ha) but at 120 DAP, nitrogen and phosphorus application up to 150 and 30 kg/ ha enhanced aroma content (0.57and 0.58% respectively) and essential oil yield (88.82 and 71.69 kg/ha respectively) in Ocimum.

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