Long-term studies on yield and quality of Java citronella (Cymbopogon winterianus Jowitt) in relation to nitrogen application

Rao, E.V.S.P.; Munnu Singh

Journal of Essential Oil Research 3(6): 419-424


ISSN/ISBN: 1041-2905
DOI: 10.1080/10412905.1991.9697977
Accession: 002425507

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C. winterianus is a very important aromatic grass cultivated in various regions in India. In a field experiment at Bangalore, Karnataka, India, rooted cuttings planted in Aug. 1982 received no N fertilizer or 100, 200 or 300 kg N/ha per year in 6 equal 2-monthly doses. Fourteen harvests were taken between Apr. 1983 and Aug. 1987. Herb yields were greater with N fertilizer than without; they increased up to the 2nd year after which they started to decline. N application at all doses significantly increased essential oil yield in the first 2 years, after which the response to the higher doses decreased. Neither N application or crop age affected oil content or composition (in terms of the main constituents citronellal, geraniol and citronellol).