Herbage, oil yield and oil quality of patchouli [Pogostemon cablin (Blanco) Benth.] influenced by irrigation, organic mulch and nitrogen application in semi-arid tropical climate

Published Date
Industrial Crops and Products
September 2002, Vol.16(2):101–107, doi:10.1016/S0926-6690(02)00013-4

• Author 

• M Singh ^,
 
• S Sharma
 
• S Ramesh

• Central Institute of Medicinal and Aromatic Plants, Field Station, Allalasandra, GKVK PO, Bangalore 560 065, India

Accepted 18 February 2002. Available online 22 March 2002.

Abstract

A field experiment was conducted during 1999 and 2000 at Bangalore in the semi-arid tropical climate of South India, to study the influence of irrigation, organic mulch and nitrogen application on its growth, herbage, oil yield and quality of patchouli [Pogostemon cablin (Blanco) Benth.] grown on Alfisol. Irrigation at 1.0 IW:CPE ratio (irrigation water:cumulative pan evaporation), 5 t ha⁻¹ distilled waste material of palmarosa, or 200 kg N ha⁻¹ produced maximum herbage and oil yields. Organic mulch reduced weed biomass significantly. The oil content varied from 0.61 to 0.73%. The highest oil content was recorded with irrigation at 0.8 IW:CPE ratio, no mulch and 100 kg N ha⁻¹. The quality of the essential oil with 50.66–54.31% patchouli alcohol, 9.86–10.26% α-bulnesene and 4.27% α-patchoulene was found to be good and readily accepted in the market.

Keywords

Pogostemon cablin

Patchouli

Herbage

Oil yield

Organic mulch

Oil quality

Weed biomass

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• * 
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