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Chemical thinning in blue spruce (Picea pungens Engelm.) stands and its effects on cambioxylophagous fauna

Author

Listed:
  • M. Pop

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

  • E. Kula

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

  • P. Maňas

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

  • R. Kajfosz

    (Forest Management Institute, Brandýs nad Labem, Czech Republic)

Abstract

Chemical thinning was applied in blue spruce (Picea pungens Engelm.) stands by the application of Roundup Klasik and Garlon 4 EC. The thinning efficacy of Garlon 4 EC was negligible, while that of Roundup Klasik reached nearly 100% when the full strength concentration was applied in quantities of 1 ml per 10 cm of stem girth using the method of drilling holes for the arboricide injection. Treated blue spruce trees died within 6 month after application. No difference was found in the response of silver and green varieties of blue spruce to the application of arboricides. Several species of cambioxylophages colonizing blue spruce were killed by Roundup. The economically insignificant Hylurgops palliatus (Gyll) was the most abundant negatively affected insect species found on the stem, followed by significant pests such as Ips amitinus (Eichh.) and Pityogenes chalcographus (L.). In these species, partial mortality of larvae was probably caused by the lowered quality of phloem. A significant mortality of Cryphalus abietis (Ratz.) was noted on branches.

Suggested Citation

  • M. Pop & E. Kula & P. Maňas & R. Kajfosz, 2010. "Chemical thinning in blue spruce (Picea pungens Engelm.) stands and its effects on cambioxylophagous fauna," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 56(5), pages 225-235.
    • Handle: RePEc:caa:jnljfs:v:56:y:2010:i:5:id:48-2009-jfs
    DOI: 10.17221/48/2009-JFS
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    References listed on IDEAS

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    1. P. Hobza & O. Mauer & M. Pop, 2008. "Current use of European beech (Fagus sylvatica L.) for artificial regeneration of forests in the air-polluted areas," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 54(4), pages 139-149.
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    Cited by:

    1. E. Kula & R. Kajfosz & J. Polívka, 2013. "Attractiveness of Picea pungens to the bark beetle species Ips amitinus (Eichh.) and Pityogenes chalcographus (L.)," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 59(12), pages 493-502.
    2. Tomáš Fiala & Jaroslav Holuša, 2021. "Infestation of Norway spruce seedlings by Cryphalus asperatus: New threat for planting of forests?," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 57(2), pages 167-170.

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