Tags: Nursery Practices

No. 107 Loblolly Pine Seedling Grade – Effect on Survival and Growth Through 20 Years; by T. A. Dierauf, J. A. Scrivani, and L. A. Chandler

November 3, 2020 - Report summarizes 20-year growth of loblolly pine in studies comparing small, average, and large initial root collar diameter. Large seedlings survived only slightly better than average seedlings, but small seedlings suffered considerable mortality. Even if small seedlings had survived as well as the others, they would have produced significantly less volume.

No. 080 Performance of Pine Needles and Wood Chip Mulches Compared to No Mulch on Loblolly Pine Seedbeds; by T. A. Dierauf and L. J. Apgar

November 3, 2020 - Report provides findings from a two-year study that compared no mulch with mulches of pine needles or wood chips. Whether mulched or not, seed drilled 1/4 to 1/2 inch deep produced higher stocking than surface sown seed. When seed was drilled, mulches did not improve seedbed stocking, but when used to cover surface sown seed, mulches immensely improved stocking.

No. 082 Root Pruning White Pine Seedlings Prior to Planting; by T. A. Dierauf and H. Hannah

November 3, 2020 - Report provides results from six separate studies installed between 1980 and 1984 to test root pruning of white pine seedlings to lengths of 1, 3, and 5 inches compared to unpruned seedlings. Severe root pruning (to 1 inch) reduced survival by 60-75%, and pruning to 3- or 5-inch lengths reduced survival to lesser amounts. Surviving seedlings did not differ in height growth regardless of severity or pruning.

No. 083 Early Planting, Over-Winter Storage, and Late Planting of White Pine Seedlings; by T. A. Dierauf

November 3, 2020 - Report summarizes results from a study installed from 1981-1984 to evaluate early lifting/planting, over-winter storage, and late lifting/planting of white pine. The most significant effect on survival came from storage; seedlings lifted and planted in the fall or in the spring survived equally. Height growth of surviving seedlings was not affected by lifting/planting schedule.