Sensitivity of Magnaporthe oryzae populations to fungicides over a 25-year time frame in Brazil.
No hay miniatura disponible
Fecha
Título de la revista
ISSN de la revista
Título del volumen
Editor
Resumen
Descripción
The 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.
Palabras clave
Arroz, Oryza Sativa, Controle Químico, Fungicida