Venturia inaequalis strains were isolated from Northern Italian orchards (Lombardy) in order to evaluate the sensitivity levels to the most common fungicide classes used to control apple scab. The mycelium growth at increasing concentration of several fungicides (myclobutanil, trifloxystrobin, dodine, cyprodinil and boscalid) was evaluated. The EC50 values of the isolates were compared to those described in the literature and to the values of three sensitive strains to calculate the resistance factors. Fifty-six isolates were tested, 75% were resistant to trifloxystrobin, 67% to myclobutanil, 25% to dodine, 14% to cyprodinil and 7% to boscalid. Some strains were characterized by multidrug resistance, usually to trifloxystrobin and myclobutanil. These results highlight the need of an accurate monitoring activity to avoid field resistance problems.

Sensibilità di isolati di Venturia inaequalis ai principali fungicidi utilizzati su melo in Lombardia / S.L. Toffolatti, G. Venturini, A. Vercesi (GIORNATE FITOPATOLOGICHE). - In: Giornate fitopatologiche : protezione delle piante, qualità, ambiente : atti[s.l] : CLUEB, 2016. - ISBN 9788849154986. - pp. 337-344 (( convegno Giornate fisiopatologiche tenutosi a Chianciano terme nel 2016.

Sensibilità di isolati di Venturia inaequalis ai principali fungicidi utilizzati su melo in Lombardia

S.L. Toffolatti
;
G. Venturini
Secondo
;
A. Vercesi
Ultimo
2016

Abstract

Venturia inaequalis strains were isolated from Northern Italian orchards (Lombardy) in order to evaluate the sensitivity levels to the most common fungicide classes used to control apple scab. The mycelium growth at increasing concentration of several fungicides (myclobutanil, trifloxystrobin, dodine, cyprodinil and boscalid) was evaluated. The EC50 values of the isolates were compared to those described in the literature and to the values of three sensitive strains to calculate the resistance factors. Fifty-six isolates were tested, 75% were resistant to trifloxystrobin, 67% to myclobutanil, 25% to dodine, 14% to cyprodinil and 7% to boscalid. Some strains were characterized by multidrug resistance, usually to trifloxystrobin and myclobutanil. These results highlight the need of an accurate monitoring activity to avoid field resistance problems.
Settore AGR/12 - Patologia Vegetale
2016
Book Part (author)
File in questo prodotto:
File Dimensione Formato  
ATTI Giornate Fitopatologiche 2016 - Vol. II VI.pdf

accesso riservato

Tipologia: Post-print, accepted manuscript ecc. (versione accettata dall'editore)
Dimensione 1.06 MB
Formato Adobe PDF
1.06 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/468034
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact