Sensitivity of Sclerotinia sclerotiorum to strobilurin fungicides in Slovakia

Monika Tóthová, Kamil Hudec and Peter Tóth
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Kamil Hudec: Department of Plant Protection, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture in Nitra, Nitra, Slovakia
Peter Tóth: Department of Plant Protection, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture in Nitra, Nitra, Slovakia

Plant Protection Science, 2020, vol. 56, issue 1, 13-17

Abstract: Rapeseed isolates of Sclerotinia sclerotiorum (Lib.) de Bary 1884 from Nitra Region of Slovakia were investigated for their in vitro sensitivity to azoxystrobin and picoxystrobin; and determining the EC50 value. The growth of S. sclerotiorum was evaluated on PDA amended with the selected fungicide´s active ingredient at 4 different concentration - 0.08, 0.83, 8.33, and 83.30 ppm. The overall mean EC50 values for azoxystrobin and picoxystrobin were 2.73 ppm and 3.12 ppm respectively. Majority of isolates had a resistance factors up to 20, that suggests the shift in S. sclerotiorum population sensitivity towards the resistance.

Keywords: azoxystrobin; EC50; mycelial growth inhibition; rapeseed; picoxystrobin; Sclerotinia sclerotiorum (search for similar items in EconPapers)
Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:56:y:2020:i:1:id:13-2019-pps

DOI: 10.17221/13/2019-PPS

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