This study was conducted to investigate the effect of activated carbon on leaf and stem production of Agastache rugosa as affected by different amounts of activated carbon. The results obtained are summarized as follows. Growth characteristics including plant height and leaf length were the highest when activated carbon added with 10%, suggesting that optimum amount of activated carbon was ranged from 10 to 20%. Growth and enlargement of the root were improved by 10% AC. Activated carbon can be utilized as a soil conditioner in agricultural crop areas.

• Seong-Kyu Choi
• Yeong-Tyae Park
• Deok-Chun Yang