Abstract
This study was conducted to confirm the utilization of <i>Pleurospermum camtschaticum</i> root extract as an organic agricultural material. Antioxidant activity of <i>P. camtschaticum</i> root extract, closely related to antibacterial activity, increased in a dose-dependent manner. In mycelial growth inhibitory activity, 100% <i>P. camtschaticum</i> root extract supressed over 70% for <i>Colletotrichum</i> coccodes and over 68% for <i>Colletotrichum dematium</i>. In the pepper fruit anthracnose development test, the size of the lesion decreased in a dose-dependent manner, which showed the same tendency as the previous results in inhibitory activity on mycelial growth. In the pepper seed germination and red pepper growth promotion test of <i>P. camtschaticum</i> root extract, oposite results was confirmed. The lower the concentration, the more the seed germination and growth promotion effects were shown. The phenol content of pepper leaves was also measured after pepper growth promotion test have been completed. The phenol content related to antibacterial activity increased in all treated groups compared to the untreated group. Therefore, the results of this study showed the possibility of development as an organic material.
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