We studied the growth of Sophora flavescens (Kurara) seedlings by the growth test for two years on the practical field at Nagano Pref., Japan to understand the methods for preservation and management for the grass field with Sophora flavescens growing. As results, many seedlings died under the dark condition that high grass species; Miscanthus sinensis (Susuki), Erigeron annuus (Hime-john) and Astilbe microphylla (Chidake-sashi) grow. It was considered that removing such as high glasses by the weeding to create the bright condition was effective to promote the growth and survival of Sophora flavescens seedlings.
