Nursery Morphology and Preliminary Comparison of 3-Year Field Performance of 1+0 and 2+0 Bareroot Ponderosa Pine Seedlings
The preplanting morphology and subsequent field performance of a relatively new stocktype, 1+0 bareroot ponderosa pine (Pinus ponderosa Dougl. ex Laws.), was evaluated on 5 different field sites over a 3-year period. Regression analyses indicate that 1+0 field performance was directly related to initial seedling root volume and total fresh weight. Compared to 2+0 seedlings planted at the same time for comparison purposes, the 1+0 seedlings were initially smaller in absolute total height and, in most cases, remained significantly smaller than 2+0 seedlings after the third season in the field. Although preplanting needle morphology (high percentage of seedlings with only primary needles) and bud phenology (lack of a firm, well-developed bud) of 1+0 seedlings differed from that of the typical 2+0 seedling, the 1+0 seedlings had annual height growth increments (in both absolute and relative terms) after the first year that were equal to, and sometimes better than, 2+0 seedlings. Tree Planters' Notes 43(4):153-158; 1992.
Download this file:
Download this file
—
PDF document,
1243Kb
Details
Author(s): Robin Rose, Mary Atkinson, John Gleason, Diane L. Haase
Publication: Tree Planters' Notes - Volumes 43, Number 4 (1992)
Section: Peer-Reviewed Articles
Volume: 43
Number: 4
