ISHS Acta Horticulturae 548: International Symposium on Growing Media and Hydroponics
EFFECTS OF MAGNESIUM ION CONTENT IN NUTRIENT SOLUTION ON THE GROWTH AND QUALITY OF MARJORAM |
| Authors: | Na Cheol-Wook, M.J. Lee, K.W. Park |
| Keywords: | essential oil, herb, hydroponics culture, magnesium |
| Abstract:
Marjoram (Origanum marjorana) was grown in a hydroponics system. This study was accomplished to investigate the effect of Mg2+ concentration on the marjoram plant growth and essential oil content. Mg2+ was supplied with 0.25, 0.5, 0.75, 1.0, and 1.5 mmol/L to nutrient solution, which was a modified herb plant nutrient solution developed by European Vegetable R&D Center (Belgium). Shoot were higher when the Mg2 was ranged from 0.75-1.0 mmol/L than at lower concentrations. Plant biomass production was higher at 0.75-1.5 range of Mg2+, however the dry weight ratio showed different results. In particular, 1.5mmol/L treatment showed high dry-weight value. Chlorophyll contents were revealed to have connection with increasing level of Mg2+ concentration at growth early stage. Essential oil contents were also increased with increasing level of Mg2+ concentration. Vitamin C contents showed high value in the treatment of 0.75 mmol/L, and other treatments were showed similar results. Mg2+ contents were increased in response to the increasing rate of Mg2+ concentration in nutrient solution. Total nitrogen contents were decreased, but nitrate contents were increased with the increasing concentration of Mg2+ treatment. | |
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