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Tree regeneration response following the use of the group selection method was studied within 36 group openings on the NavalSurface Warfare Center, Crane Division in south centrallndiana. Two different aspects and three time periods since cutting were examined. The objectives were to determine whether aspect, age, species group, location within the opening, or their interactions had any influence on the number of stems or average height of the tree regeneration. Among openings up to 20 yr since cutting, yellow-poplar and dogwood were most abundant for stems greater than 2.5 cm diameter at breast height (dbh), and dogwood and cherry-ash-walnut were most abundantfor stems less than 2.5 cm dbh. The location xspecies group interaction also influenced the number of stems greater than 2.5 cm dbh. Stems less than 2.5 cm dbh were influenced by the age x species group and aspect x species group interactions. The north aspect and the oldest openings contained the most stemsper hectare less than 2.5 cm dbh. The interaction of age and species group influenced average height for stems greater than or equal to 2.5 cm dbh. Average height increased with age for stems greater than or equal to 2.5 cm dbh. North. J. Appl. For. 14(2):90-94.

Tree Regeneration Response to the Group Selection Method in Southern Indiana