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Current state of beech bark necrotic disease in Southern Poland

Author

Listed:
  • A. Cicák

    (Institute of Forest Ecology of the Slovak Academy of Sciences, Zvolen, Slovakia)

  • I. Mihál

    (Institute of Forest Ecology of the Slovak Academy of Sciences, Zvolen, Slovakia)

Abstract

The degree of the beech bark necrotic disease was evaluated in three selected localities in southern Poland, in different orographic complexes, Beskid Sądecki, Beskid Niski, and Bieszczady. The degree is expressed by means of the stem necrotising index (ISN ), crowns necrotising index (ICN ), and whole tree necrotising index (INWT ). The values of the indices laid in the following limits: ISN 0.73-0.84%, ICN 0.12%-0.51%, and INWT 0.84%-0.90%. The current status of the beech necrotic disease in Southern Poland can be considered as favourable. The values of ISN recorded in Southern Poland were lower by 30% than the average ISN for whole Slovakia. We also recorded the frequency of selected insect pests (Bucculatrix ulmella Zeller, Cryptococcus fagi Bärensp., and Ectoedemia liebwerdella Zimm.), which act in the beech stands as vectors of the necrotic disease. With C. fagi, we recorded a high frequency reaching even 100%. In contrast, we did not at all observe the occurrence of B. ulmella and E. liebwerdella, which are common in the beech stands in Slovakia, as well as in Hungary, Romania, and Bulgaria. In the localities studied, we recorded the occurrence of two species of parasitic fungi of the genus Nectria (Fr.) Fr. causing the beech bark necrotic disease, viz. Nectria cosmariospora Ces et De Not. and N. galligena Bres. ex Strasser.

Suggested Citation

  • A. Cicák & I. Mihál, 2008. "Current state of beech bark necrotic disease in Southern Poland," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 54(10), pages 459-464.
    • Handle: RePEc:caa:jnljfs:v:54:y:2008:i:10:id:47-2008-jfs
    DOI: 10.17221/47/2008-JFS
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    References listed on IDEAS

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    1. A. Cicák & I. Mihál & Ch. Tsakov & P. Petkov, 2007. "Methods of complex evaluation of the necrotic disease of beech," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 53(10), pages 462-466.
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