Brown spot, caused by Stemphylium vesicarium, is the most important pear fungal disease in Northern Italy and its management relies on frequent preventative applications of fungicides. Dicarboximides (mainly procymidone) are the fungicides most effective against this pathogen but the occurrence of field resistant isolates in the early 1990s led to a reconsideration of other products. S. vesicarium sensitivity to SBIs, dithiocarbamates, anilinopyrimidines, strobilurins, phenylpyrroles and sulphamides was evaluated through inhibition tests of conidial germination, mycelial growth and hyphal elongation. Fenbuconazole, penconazole, ziram and strobilurins showed good efficacy on conidial germination also in isolates resistant to dicarboximides, while the best activity on mycelial growth was obtained with anilinopyrimidines, tebuconazole, flutriafol, difenoconazole and propiconazole. The best hyphal growth inhibition was observed with ziram and fenbuconazole.
Sensitivity in vitro of Stemphylium vesicarium to fungicides / M. Collina; G. Alberoni; A. Brunelli. - In: IOBC/WPRS BULLETIN. - ISSN 1027-3115. - STAMPA. - 29 (1):(2006), pp. 155-161. (Intervento presentato al convegno Working group „Integrated Protection of Fruit Crops” Sub group “Pome Fruit Diseases” tenutosi a Piacenza nel 31 August – 3 September 2005).
Sensitivity in vitro of Stemphylium vesicarium to fungicides
COLLINA, MARINA;ALBERONI, GIULIA;BRUNELLI, AGOSTINO
2006
Abstract
Brown spot, caused by Stemphylium vesicarium, is the most important pear fungal disease in Northern Italy and its management relies on frequent preventative applications of fungicides. Dicarboximides (mainly procymidone) are the fungicides most effective against this pathogen but the occurrence of field resistant isolates in the early 1990s led to a reconsideration of other products. S. vesicarium sensitivity to SBIs, dithiocarbamates, anilinopyrimidines, strobilurins, phenylpyrroles and sulphamides was evaluated through inhibition tests of conidial germination, mycelial growth and hyphal elongation. Fenbuconazole, penconazole, ziram and strobilurins showed good efficacy on conidial germination also in isolates resistant to dicarboximides, while the best activity on mycelial growth was obtained with anilinopyrimidines, tebuconazole, flutriafol, difenoconazole and propiconazole. The best hyphal growth inhibition was observed with ziram and fenbuconazole.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
