Abstract
ABSTRACT A controlled environment greenhouse study was con-ducted to observe root growth and initial seedling establishment of loblolly pine (Pinusa taeda L.) over a range of soil porosities within a uniform soil matrix. Loblolly pine trees were grown for 19 weeks in pots with soil at bulk densities of 1.2, 1.4, 1.6, 1.8, and 2.0 g/cc. Root and shoot masses, root system surface area, and root collar diameter increased significantly with decreas-ing soil bulk density. Significant differences in tree height appeared the seventh week after planting and con-tinued to increase until harvest at week nineteen.
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