Stimulation of Armillaria mellea by phenolic fungicides

A - Papers appearing in refereed journals

West, J. S. and Fox, R. T. V. 2002. Stimulation of Armillaria mellea by phenolic fungicides. Annals of Applied Biology. 140 (3), pp. 291-295.

AuthorsWest, J. S. and Fox, R. T. V.
Abstract

Phenolic fungicides, which were initially fungicidal to mycelium of Armillaria mellea on the surface of well-colonised wood billets, eventually stimulated the growth of A. mellea. An extensive growth of rhizomorphs was produced from A. mellea inoculum, which had been exposed to phenolic chemicals for 3 months, compared to few or no rhizomorphs produced from inoculum exposed to water or a suspension of a non-phenolic fungicide, fenpropidin. Inoculated privet plants grown either in pots or under field conditions were treated with a range of fungicides; fenpropidin, phenyl phenol, cresylic acid or water (control) was applied every 6 months over 21/2 yr. Fenpropidin caused a slightly (but significantly) lower incidence of infection than occurred in untreated plants, but the phenolic fungicides, cresylic acid and phenyl phenol, did not reduce the incidence of infection. The severity of infection (% root circumference colonised at 5 cm depth) was greater following cresylic acid treatments than the other fungicides or water-treated controls. Use of phenolic fungicides such as cresylic acid for the control of A. mellea may therefore be counter-productive.

KeywordsAgriculture, Multidisciplinary
Year of Publication2002
JournalAnnals of Applied Biology
Journal citation140 (3), pp. 291-295
Digital Object Identifier (DOI)doi:10.1111/j.1744-7348.2002.tb00184.x
Open accessPublished as non-open access
Funder project or code424
507
ISSN00034746
PublisherWiley

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