EFFECTS OF MAGNESIUM ION CONTENT IN NUTRIENT SOLUTION ON THE GROWTH AND QUALITY OF MARJORAM

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.

International Symposium on Growing Media and Hydroponics

Na Cheol-Wook, M.J. Lee, K.W. Park

essential oil, herb, hydroponics culture, magnesium

https://doi.org/10.17660/ActaHortic.2001.548.57