PT Journal
AU Tothova, M
   Hudec, K
   Toth, P
TI Sensitivity of Sclerotinia sclerotiorum to strobilurin fungicides in Slovakia
SO Plant Protection Science
PY 2020
BP 13
EP 17
VL 56
IS 1
DI 10.17221/13/2019-PPS
DE azoxystrobin; EC50; mycelial growth inhibition; rapeseed; picoxystrobin; Sclerotinia sclerotiorum
AB 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 EC<sub>50</sub> 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 EC<sub>50</sub> 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.
ER