International Journal of Manures and Fertilizers

International Journal of Manures and Fertilizers Vol. 3 (6), pp. 533-538 June, 2014. © International Scholars Journals

Full Length Research Paper

Planting time, Assessing N-use and economics of fertilizer N in rose-scented geranium (Pelargonium graveolens L’ Herit) in Western Himalayan Region of India

Gaurav Kaushik, Jadav Vishnu and Ranjan Arslan

College of Agriculture, Faculty of Crop Physiology, Assam Agricultural University, Jorhat, Assam, India. E-mail: Gaurav16@yahoo.com

Accepted 18 May, 2014

Abstract 

A field experiment was conducted to study the effect of N levels and planting times on growth, biomass and oil yield attributes, agronomic efficiency (AE) and partial factor productivity (PFP), and economics of N application through marginal analysis. Results indicated that reducing the duration (from planting to harvesting) from December (144 days) to April (74 days) significant result in reduction in percent dry matter production, biomass, oil yield, PFP, AE and net income. Nitrogen application significantly increased dry matter production, leaf/stem ratio, biomass and oil yield in February planted crop. The AE of applied N, were also higher in February planted crop. The AE of applied nitrogen at 50, 100 and 150 kg N ha-1 were 188, 224 and 200 kg-1 kg N respectively. At 100 kg N ha-1 the crop earned a maximum profit Rs. 30.02. The quality of essential oil was not significantly influenced by application of different nitrogen levels.

Key words: Nitrogen, fertilizer, agronomic efficiency, scented geranium.