The effectivity of Tilletiopsis albescens in biocontrol of powdery mildew

I.M.B. Knudsen, J.P. Skou

    Research output: Contribution to journalJournal articleResearch

    Abstract

    Tilletiopsis albescens grows well on powdery mildew fungi inoculated on barley or cucumber leaves and causes collapse of the colonies. Application of ballistospores or cut mycelium was equally effective for biocontrol, and the effectiveness tended to increase exponentially with the concentration of germinating units (conidia and cut mycelium) applied. Seventy percent relative humidity or more is required for effective biocontrol. Two applications of T. albescens in the period from 3 days before to 3 days after inoculation with powdery mildew were more effective than one. Applications before inoculation or 7 days after inoculation with powdery mildew had little effect. T. albescens followed the powdery mildew as it was disseminated to uninoculated leaves, but this did not result in an effective biocontrol. The potential for using T. albescens for biocontrol of powdery mildews is discussed.
    Original languageEnglish
    JournalAnnals of Applied Biology
    Volume123
    Issue number1
    Pages (from-to)173-185
    ISSN0003-4746
    DOIs
    Publication statusPublished - 1993

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