Field studies of nitrogen application on Greek oregano (Origanum vulgare ssp. hirtum (Link) Ietswaart) essential oil during two cultivation seasons

dc.contributor.advisor	Karamanos, Andreas J.	en
dc.contributor.advisor	Καραμάνος, Ανδρέας Ι.	el
dc.contributor.author	Sotiropoulou, Dimitra E.Κ.	en
dc.contributor.author	Σωτηροπούλου, Δήμητρα Ε.Κ.	el
dc.date.accessioned	2014-06-06T06:52:32Z
dc.date.available	2014-06-06T06:52:32Z
dc.date.issued	2013	en
dc.identifier.issn	09266690	en
dc.identifier.uri	http://dx.doi.org/10.1016/j.indcrop.2013.01.021	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/6061
dc.subject.other	Low level	en
dc.title	Field studies of nitrogen application on Greek oregano (Origanum vulgare ssp. hirtum (Link) Ietswaart) essential oil during two cultivation seasons	en
heal.type	journalArticle	en
heal.keyword	Greece	en
heal.keyword	Oregano	en
heal.keyword	Nitrogen	en
heal.keyword	Essential oil concentration	en
heal.keyword	Bioaccumulation	en
heal.keyword	Myrcene	en
heal.keyword	Camphene	en
heal.keyword	Origanum vulgare	en
heal.keyword	Phenols	en
heal.keyword	Cultivation season	en
heal.keyword	Essential oil composition	en
heal.keyword	Caryophyllene	en
heal.keyword	Fertilizers	en
heal.keyword	Terpinene	en
heal.identifier.primary	10.1016/j.indcrop.2013.01.021	en
heal.publicationDate	2013	en
heal.bibliographicCitation	Karamanos, Andreas J. Field studies of nitrogen application on Greek oregano (Origanum vulgare ssp. hirtum (Link) Ietswaart) essential oil during two cultivation seasons. Industrial Crops and Products, vol. 46, pp. 246-252, Elsevier 2013	en
heal.abstract	The effects of four levels of fertilizer nitrogen application (0, 40, 80 and 120kgNha-1) on oil yield, concentration, and composition of Greek oregano (Origanum vulgare ssp. hirtum (Link) Ietswaart) during the second and third seasons from its field establishment were examined. Oil concentration per plant increased significantly from about 1.5% to 2.0% in the second to about 5.5% (v/w) in the third season and it was higher in the inflorescences when compared with leaves. No significant effects of fertilizer application on oil concentration were detected. Oil yield showed significant peaks at nitrogen rates of 80kgha-1 in both seasons and was significantly higher in the third (between 57 and 83lha-1), when compared with the second season (between 17 and 27lha-1). Such a response was ascribed to the positive nitrogen effects on herbage yield. As regards oil composition, nitrogen fertilization exhibited some significant effects only in the third, more humid, season. Thus, it positively affected linalool content in inflorescences at the rate of 80kgNha-1and carvacrol content in leaves at the rates of 40, 80 and 120kgNha-1. On the other hand, π-cymene, caryophyllene, α-pinene, thymol, and camphene were observed at higher levels in the unfertilized plots. Carvacrol was the dominant constituent of the essential oil content ranging from 56.46% to 84.88% among organs, treatments and seasons. It was followed by π-cymene (4.19-21.4%) and α-pinene (0.11-1.88%). Thymol was detected at low levels (0.20-1.44%). Carvacrol percentage was higher in the drier and warmer season (70.75-84.88%) in both leaves and inflorescences, whereas a number of compounds (α-thujene, α-pinene, camphene, myrcene, α- and γ-terpinene, π-cymene, cis-hydrosavinene, linalool, α-terpineol, α-caryophyllene, and β-disavolene) tended to accumulate at higher levels during the wetter and colder season. © 2013 Elsevier B.V.	en
heal.publisher	Elsevier	en
heal.publisher	Γεωπονικό Πανεπιστήμιο Αθηνών/Τμήμα Φυτικής Παραγωγής	el
heal.journalName	Industrial Crops and Products	en
dc.identifier.doi	10.1016/j.indcrop.2013.01.021	en