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Efforts to prevent the invasion of black cherry Prunus serotina Ehrh. have a long history in Western Europe. However, effective methods of eliminating it that do not bear negative side effects for ecosystems have not yet been developed. Mechanical methods are the first choice in environmentally sensitive areas. In this study, we aimed to find answers to the questions: does the application of cutting at a height of 1 m from the ground limit the sprouting capacities of black cherry? And, is stem girdling an effective method of eliminating black cherry? The study was carried out in the Kampinos National Park, on two mixed pine forest plots with undergrowth of black cherry. Three mechanical methods of elimination were applied: cut-stump at the base, cutting at a height of 1 m above the ground and girdling of the stem at a height of ca 1 m above the ground. In both locations, 225 trees were treated, at three different dates corresponding with three different phenological phases of black cherry development. The evaluation of effectiveness of treatments was based on the sprouting capacity of the tree afterwards, which included: the number of generated sprouts, the length of three longest sprouts, dry mass of sprouts, and the assessment of tree survival rate. It was discovered that girdling is a significantly more effective method of control than ground-level cut-stump or cutting at a height of 1 m above the ground in the conditions of central Poland. However, in the season of treatment, even though recurring sprouts were removed, only a part of the girdled trees died (24% to 54%). There is a slight difference between the sprouting response of cutting at a height of 1 m above the ground (4% to 24% of dead trees) and the basal cut-stump method (0% of dead trees)

Is cut-stump and girdling an efficient method of black cherry Prunus serotina Ehrh. eradication?