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Leaf miner moths on common hazel in urban habitats and in the forest and on cultivated hazel on productive plantation without chemical treatments were studied regarding the composition of their species and structure of their abundance in 2000–2002. The presence of six microlepidopteran species belonging to 3 families was shown: Nepticulidae (2 species), Gracillariidae (3) and Coleophoridae (1). The...
During the last 3 years new Phytophthora species were detected on diseased Chamaecyparis spp., Thuja spp., Microbiota decussata, Picea and Pinus species and cultivars. On Chamaecyparis, beside P. cinnamomi known in Poland since 1993, P. cambivora, P. citricola and P. cryptogea were isolated from diseased roots and stem base. On Thuja spp., beside P. citricola. P. cinnamomi and P. cryptogea were isolated...
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