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Dothistroma needle blight Mycosphaerella pini E. Rostrup, a new quarantine pathogen of pines in the CR

Author

Listed:
  • L. Jankovský

    (Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry, Brno, Czech Republic)

  • M. Bednářová

    (Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry, Brno, Czech Republic)

  • D. Palovčíková

    (Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry, Brno, Czech Republic)

Abstract

Dothistroma needle blight caused by Mycosphaerella pini E. Rostrup was observed for the first time in the Czech Republic on an imported Pinus nigra Arnold in 1999. In 2000, it was also found in the open planting. During three years, it became an important pathogen of pines in the Czech Republic. Its occurrence was noticed in more than 50 localities, above all in the region of Moravia and Silesia and eastern Bohemia. In total, it was found on 10 species of pine (P. nigra Arnold, P. banksiana Lamb., P. contorta Loudon, P. mugo Turra, P. leucodermis Ant., P. sylvestris L., P. cembra L., P. aristata Engelm., P. ponderosa P. et C. Lawson and P. jeffreyi Grev. et Balf.). Also Picea pungens Engelm. was noticed as a host species. In the Czech Republic, Pinus nigra is the most frequent host species of M. pini (80% localities) followed by Pinus mugo (27% localities). On Scots pine P. sylvestris, M. pini was noticed at two localities. The critical period for infection is in the Czech Republic from the second half of May until the end of June. The incubation period lasts about 2-4 months depending on climatic conditions. The first symptoms on the needles infected in the current year appear in August being clearly expressed from September to November.In the CR, Dothistroma needle blight spread probably with infected planting stock obtained from import at the end of the 80s and at the beginning of the 90s.

Suggested Citation

  • L. Jankovský & M. Bednářová & D. Palovčíková, 2004. "Dothistroma needle blight Mycosphaerella pini E. Rostrup, a new quarantine pathogen of pines in the CR," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 50(7), pages 319-326.
    • Handle: RePEc:caa:jnljfs:v:50:y:2004:i:7:id:4629-jfs
    DOI: 10.17221/4629-JFS
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    Citations

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    Cited by:

    1. Libor JANKOVSKÝ & Dagmar PALOVČÍKOVÁ & Miloň DVOŘÁK & Michal TOMŠOVSKÝ, 2009. "Records of Brown spot needle blight related to Lecanosticta acicola in the Czech Republic," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 45(1), pages 16-18.
    2. M. Bednářová & D. Palovčíková & L. Jankovský, 2006. "The host spectrum of Dothistroma needle blight Mycosphaerella pini E. Rostrup - new hosts of Dothistroma needle blight observed in theCzech Republic," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 52(1), pages 30-36.

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