01207nam a2200193 a 450000100080000000500110000800800410001910000190006024501240007926001340020330000120033752005590034965000100090865000220091865000140094065000170095470000220097170000200099321120422024-04-19       2019    bl uuuu     u00u1 u    #d1 aD'AVILA, L. S.  aSensitivity of Magnaporthe oryzae populations to fungicides over a 25-year time frame in Brazil.h[electronic resource]  aIn: CONGRESSO BRASILEIRO DE FITOPATOLOGIA, 51., 2019, Recife. Anais... Brasília, DF: Sociedade Brasileira de Fitopatologiac2019  ap. 163.  aThe changes in fungicide resistance frequency of the rice blast fungus Magnaporthe oryzae were monitored by examining an assembly of 60 isolates collected over a period of 25 years in conventional growers´ rice fields. Initially, the in vitro sensitivity of all isolates to fungicides Azoxystrobyn, Tryciclazole, Trifloxystrobin+Tebuconazole and Tebuconazole was measured. Over the 25-year (1989-2014) time frame, a gradual rise in the EC50 estimates for mycelial growth sensitivity was observed for all fungicides, but most strikingly for Azoxystrobin.  aArroz  aControle Químico  aFungicida  aOryza Sativa1 aFILIPPI, M. C. C.1 aFILHO, A. C. C.