In vitro and in vivo sensitivity of Rhizoctonia solani to several commercial fungicidesand biofungicides was studied. An isolate of R. solani, derived from diseased pepper plantsoriginating from a greenhouse in Knja?evac, Serbia, was used. The highest effi cacy in R.solani control under greenhouse conditions was achieved by iprodione (95.80%, comparedto control), although diff erences in the eff ectiveness of iprodione, tea tree oil, azoxystrobinand thiophanate-methyl were not statistically signifi cant. The isolate was sensitive to alltested products in vitro. The obtained EC50s were: 0.43 mg/l for iprodione, 1.84 mg/l forthiophanate-methyl, 13.84 mg/l for prochloraz, 430.37 mg/l for fl uopyram, 596.60 mg/l forazoxystrobin, and 496.79 mg/l for tea tree oil.
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