Agronomic Aspects of the Cultivation ofOlearia phlogopappain Relation to Essential Oil Quality and Yield
作者:
ValerieA. Dragar,
RobertC. Menary,
期刊:
Journal of Essential Oil Research
(Taylor Available online 1996)
卷期:
Volume 8,
issue 5
页码: 521-529
ISSN:1041-2905
年代: 1996
DOI:10.1080/10412905.1996.9700680
出版商: Taylor & Francis Group
关键词: Olearia phlogopappa;Asteraceae;essential oil;row spacing;harvest;plant density;oil yield
数据来源: Taylor
摘要:
Clonal material from the Australian endemicOlearia phlogopappaLabill. D.C. was grown under field conditions to determine the effects of spacing, canopy shape, harvest frequency and pruning on biomass production and essential oil yield. The greatest yields were achieved with no pruning, 0.8 m spacing, a hedge type canopy and a biannual harvest. In addition, the Nelder fan design was used to determine the effect of a range of planting densities (1.11 to 4.99 plants/m2), on the yield and quality of essential oil. The optimal yield of oil per hectare was obtained at a density of 4-5 plants/m2. This is a direct result of increasing biomass, since there was no significant difference in the oil yield/g dry matter between density treatments. The quality of essential oil, as determined by the percentages of kessane and liguloxide present, did not alter with increasing density. Morphometric parameters were also independent of density.
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