The information on this page is based on 8 years of research and development work at the University of Natural Resources and Life Sciences Vienna.
Strong presence in urban areas and along traffic routes
May cause significant damage to buildings and infrastructure
Can grow in poor soil fertility
Rapid growth in early development
Develops sprouts and root suckers
Early and abundant fructification
Impairs growth of other plants by the excretion of allelopathic (growth-inhibiting) substances.
May cause allergic reactions
Almost no natural antagonists present in Europe
Pathogenic effect on Ailanthus
Very narrow host spectrum
Virulent strain could be isolated
Maschek, O.; Halmschlager, E.: Effects of Verticillium nonalfalfae on Ailanthus altissima and associated indigenous and invasive tree species in eastern Austria. EUR J FOREST RES. 2018; 137(2): 197-209. FullText
Maschek, O.; Halmschlager, E.: Natural distribution of Verticillium wilt on invasive Ailanthus altissima in eastern Austria and its potential for biocontrol. FOREST PATHOL. 2017; 47(5): FullText
Maschek, O.; Halmschlager, E.: A rapid, reliable and less-destructive method for stem inoculations on trees. FOREST PATHOL. 2016; 46(2): 171-173. FullText
Maschek, O.; Halmschlager, E.: First Report of Verticillium Wilt on Ailanthus altissima in Europe Caused by Verticillium nonalfalfae. PLANT DIS. 2016; 100(2): 529-529. FullText
After infection, fungal spores of Verticillium nonalfalfae are distributed in the sap stream. Germinated spores in turn form local mycelium aggregations, which release enzymes and toxins into the water transport tissue. This leads to withering and subsequent decay of the plants. The first symptoms can occur 4 - 6 weeks after inoculation if applied early and under favourable conditions. In the case of large trees, the effect is usually only visible in the following year. The fungus can also spread into neighbouring shoots if they are connected to an infected tree by root runners.
- Non-cultivated land, such as
Railway tracks or
Areas not used for agricultural purposes (eg. pipeline routes)
- Ornamentals plant cultivation, including parks and paths
production, trade and consulting GmbH
Tel: 01 769 9 769 - fax: DW 16
1110 Wien, Austria
Phone: (+43 1) 76 99 769
Fax: (+43 1) 76 99 769 16
UID: ATU 575 898 08
FN 243 084b
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Managing Director: Dr. Michael Groß (responsible for the content)
Bank details: Volksbank Wien-Baden AG
IBAN: AT37 4300 0303 4246 0000
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biohelp - biological plant protection
Nützlingsproduktions-, Handels- und Beratungs-GmbH Postadresse: 1110 Wien, Kapleigasse 16
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