Provider: Ingenta Connect Database: Ingenta Connect Content: application/x-research-info-systems TY - ABST AU - Nicolescu, Valeriu-Norocel AU - Sandi, Melinda AU - Păun, Marius TI - Occlusion of pruning wounds on northern red oak (Quercus rubra) trees in Romania JO - Scandinavian Journal of Forest Research PY - 2013-06-01T00:00:00/// VL - 28 IS - 4 SP - 340 EP - 345 KW - northern red oak KW - branch size KW - wound occlusion KW - Romania KW - Artificial pruning KW - dbh increment N2 - This study focuses on the occlusion of pruning wounds on northern red oak (Quercus rubra L.) trees grown in two plantations established in the south-east of Transylvania, Romania in 1997 and 2004. In total, 184 green branches of elliptical cross section (i.e. with the horizontal axis Ha shorter than vertical axis Va and ranging between 0.6 cm and 4.5 cm) were pruned in April 2007 and May 2009. Of these branches, 161 (88%) were fully occluded after five growing seasons and, the majority of these, 148 wounds (80%), had occluded in three seasons. The main factors affecting the wound occlusion on trees subject to artificial pruning are diameter at breast height increment and branch size: the occlusion is more rapid in trees with faster diameter growth rates and on small branches of maximum 3 cm Ha. Consequently, artificial pruning should be concentrated on small branches on well formed, vigorous and evenly spaced final crop trees which can subsequently be favoured by heavy and targeted thinning from above, allowing the production of large diameter, high-quality trees in 50–70 years. UR - https://www.ingentaconnect.com/content/tandf/sfor/2013/00000028/00000004/art00004 M3 - doi:10.1080/02827581.2012.747621 UR - https://doi.org/10.1080/02827581.2012.747621 ER -