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Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí lâm nghiệp đề tài: The extent of root rot damage in Norway spruce stands established on fertile sites of former agricultural land. | JOURNAL OF FOREST SCIENCE 56 2010 1 1-6 The extent of root rot damage in Norway spruce stands established on fertile sites of former agricultural land R. Mares Faculty of Forestry and Wood Technology Mendel University in Brno Brno Czech Republic ABSTRACT The aim of this study was to compare the degree of root rot damage in two large complexes of Norway spruce stands established on former agricultural land at fertile sites. The root rot infection was observed on the stump cutting area on both intended and salvage clear fellings. Stands in Kruzberk area in the Nízký Jesenik Mts. established on arable land showed very poor stability and large root rot damage at the age of 40-50 years. In contrast stands in Luzna area in the Javorniky Mts. founded on former sheep pastures were markedly much less damaged at the age of 90-110 years and proved to be able to provide quality timber although they were damaged by the root rot as well. Keywords afforestation of agricultural land Kruzberk area Luzna area Norway spruce root rot Agricultural overproduction in Europe is the main reason for rising interests in the afforestation of agricultural land. The present EU agricultural policy has resulted in a new wave of afforestation which means that the forestry sector will have to cope with the specificities of this problem. There were several waves of afforestation in history and many high-quality stands were founded on agricultural land. Therefore we should learn from the present state of these forest stands to establish stable and productive stands and especially not to repeat the mistakes of the past. The quantitative side of timber production is not usually the problem here because agricultural land is usually more productive than forest land. However afforestation is different from reforestation in many aspects which brings some problems concerning particularly the stability of some tree species. Most conifers and especially Norway spruce Picea abies L. Karst. are endangered on .
