Loblolly Pine Growth in Compacted Greenhouse Soils

摘要: 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 soil porosities within uniform matrix. Loblolly trees were grown for 19 weeks in pots with at bulk densities 1.2, 1.4, 1.6, 1.8, 2.0 g/cc. Root shoot masses, system surface area, collar diameter increased significantly decreas-ing density. Significant differences tree height appeared the seventh week after planting con-tinued increase until harvest nineteen.