Ash dieback and contributing factors of forest weakening in provenance tests in the Sumy region

Sammanfattning

The aim of this study was to evaluate the health condition of Fraxinus excelsior L. in provenance tests, with special focus on ash dieback (ADB), but taking into account also other causes of its decline. The research was carried out in the provenance tests of F. excelsior in the forest-steppe part of the Sumy region. ADB symptoms were revealed in all provenance tests. For 2012-2019 the health condition index, ADB incidence and severity increased for all provenances except the Steppe. Collar rot was present in all ash provenances. Fungi species were isolated from the stem parts of ash at all provenances. Hymenoscyphus fraxineus induced longest necrotic lesions following wound inoculation of stems of 7-10-years-old plants of European ash in the forest while inoculation with both Cytospora sp. and Diplodia sp. resulted in smaller necroses. The conclusion from other regions about the coincidence the damage of European ash by ADB and collar rots as well as the coincidence the damage of European ash by collar rot and tree colonization by Hylesinus crenatus (Fabricius, 1787) is supported.

Nyckelord

Fraxinus excelsior; collar rot; health condition; incidence; severity

Publicerad i

Central European Forestry Journal
2021, volym: 67, nummer: 2, sidor: 113-121
Utgivare: SCIENDO

SLU författare

• Davydenko, Kateryna

  • Institutionen för skoglig mykologi och växtpatologi, Sveriges lantbruksuniversitet
    
  • Ukrainian Research Institute of Forestry & Forest Melioration

Associerade SLU-program

SLU Nätverk växtskydd

Globala målen (SDG)

SDG15 Ekosystem och biologisk mångfald

UKÄ forskningsämne

Skogsvetenskap

Publikationens identifierare

• DOI: https://doi.org/10.2478/forj-2021-0001

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/121728