Influenza di strategie anti-resistenza sulla sensibilità ai fungicidi in Cercospora beticola

Luca Languasco, Vittorio Rossi, Pierluigi Meriggi, Francesca Moggi, Giancarlo Beltrami

Risultato della ricerca: Contributo in libroContributo a convegno

Abstract

In the years 2003 and 2004, the effect of different SBI and QoI fungicides, used alone, in mixture or in alternation, on the sensibility level of Cercospora beticola populations was studied. Sensibility was studied in laboratory using fungal isoltes collected in the experimental fields before the beginning of fungicide sprays and after three fungicide applications. A decrease of fungal populations’ sensibility was registered for tetraconazole, when it was used alone or in mixture with azoxystrobin at reduced rates. On the contrary, the use of tetraconazole and azoxystrobin at full rates, as well as the use of difenoconazole and fenpropidin, significantly reduced the proportion of isolates showing reduced sensibility to tetraconazole. No reduced sensibility was observed for azoxystrobin. Some isolates were less sensitive to difenoconazole in one experimental site that had been shown reduced sensibility to IBS fungicides.
Titolo tradotto del contributo[Autom. eng. transl.] Influence of anti-resistance strategies on fungicide sensitivity in Cercospora beticola
Lingua originaleItalian
Titolo della pubblicazione ospiteAtti Giornate Fitopatologiche
Pagine339-346
Numero di pagine8
Stato di pubblicazionePubblicato - 2006
EventoGiornate Fitopatologiche 2006 - Cesena
Durata: 26 mar 200629 mar 2006

Convegno

ConvegnoGiornate Fitopatologiche 2006
CittàCesena
Periodo26/3/0629/3/06

Keywords

  • Cercospora beticola
  • IBS
  • QoI
  • alternanze
  • dosi di applicazione
  • miscele

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