Volume 17 Part 1 Article 48: Sensitivity of Verticillium fungicola var. fungicola, Mycogone perniciosa and Cladobotryum spp. to fungicides in Serbia

Volume 17 Part 1 Article 48
Year 2008
Title: Sensitivity of Verticillium fungicola var. fungicola, Mycogone perniciosa and Cladobotryum spp. to fungicides in Serbia
Authors: I. Potocnik, S. Milijasevic, E. Rekanovic, B. Todorovic and M. Stepanovic

Abstract:

Twenty-two isolates obtained from diseased fruit bodies of Agaricus bisporus collected from mushroom farms in Serbia during 2002–06 were studied. Based on pathogenicity tests and morphological characteristics, the isolates were identified as Verticillium fungicola var. fungicola, Cladobotryum spp. or Mycogone perniciosa. The isolates investigated were tested for sensitivity to benomyl, iprodione and prochloraz-Mn in vitro. The sensitivity tests to the selected fungicides showed that all V. fungicola var. fungicola isolates were highly resistant to benomyl, having EC50 values exceeding 200.00 mg/L, moderately sensitive to iprodione, whose EC50 values ranged between 11.93 and 22.80 mg/L, and highly sensitive to prochloraz-Mn with EC50 values below 3.00 mg/L. Cladobotryum spp. isolates were highly sensitive to prochloraz-Mn, benomyl and iprodione, their respective EC50 values being below 0.09, 0.97 and 2.30 mg/L. Prochloraz-Mn was highly toxic to M. perniciosa isolates, with EC50 values below 0.008 mg/L. Benomyl and iprodione were also very toxic to M. perniciosa isolates and had EC50 values below 0.46 and 4.08 mg/L, respectively. Among the fungicides investigated, prochloraz-Mn was the most toxic to all investigated isolates. Resistance to benomyl and iprodione was not detected in any of the isolates of Cladobotryum spp. and M. perniciosa studied.

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