Vol. 80 No: 4

Title:
Effects of nitrogen, phosphorus and potassium on herbage, oil yield, oil quality and soil fertility status of lemongrass in a semi-arid tropical region of India

Authors:
MUNNU SINGH, R. S. GANESHA RAO and S. RAMESH

pp: 493-497

Abstract:
Field experiments were conducted in an area experiencing a semi-arid tropical climate at Bangalore, India.The effects of phosphorus (at 0, 17.75 and 35.50 kg ha^-1 year^-1), potassium (at 0, 33.2, 66.4 and 99.6 kg ha^-1 year-1) and, in another experiment, nitrogen (at 100 and 200 kg ha^-1 year^-1) and potassium (at 0, 33.2 and 66.4 kg ha^-1 year^-1) were studied on herbage and oil yield of lemongrass [Cymbopogon flexuosus (Steud.) Wats.] and on soil fertility status. The results revealed that application of 200 kg N ha-1, 35.50 kg P ha^-1 and 66.4 kg K ha^-1 produced significantly higher lemongrass herbage and oil yields compared with controls.The content and composition of the oil were not influenced by N, P and K application. Soil fertility status was maintained by the application of fertilisers compared with soil in control plots.

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