Abstract
Wheat straw axenically or naturally infested with Pyrenophora tritici-repentis was inoculated with one of several antagonistic fungi and exposed to various treatments of alternate wetting and drying, and ascocarp production by P. tritici-repentis on straw was measured. Wetting treatments were repeated wet periods of 6, 12, 24, or 48 h separated by drying periods. In the absence of suppressive fungi, ascocarp formation by P. tritici-repentis was observed in both axenically colonized straw and naturally infested field straw in all wetting treatments, and the effect of wetting duration on ascocarp formation was not obvious. Suppression of ascocarp formation in both field and axenic straw by selected antagonistic fungi was affected by the duration of intermittent wetting [...]
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