Epiphytic fungi colonizing the surface of apple fruits have caused severe damages in the last years in Northern Italy. The most important disease called “white haze” is cause by the agent Tilletiopsis sp. and consists of a thin whitish to gray layer of fungal growth sticking to the cuticle of apple surface. The fungal growth may increase rapidly during the summer and harvest time but no evidence of new symptoms and spread from infected to healthy apples was observed during storage. In vitro test with different chemical fungicides and new natural compounds were performed during 2020 and 2021 to determine their capability to reduce the fungal growth on Petri plate and design new effective control strategies in the field trial. Furthermore, the effect of UV-C treatment in reducing the growth of Tilletiopsis sp. in Petri plate was investigated. Results indicate the efficacy of chemical fungicide application ranged between 4 to 100% with the full control obtained by fosetyl-Al, captano, dodine and penconazole at 20°C on PDA media. Interestingly, a full control of the pathogen was also obtained with a new natural compound based on orange oil but several others showed an acceptable control such as potassium bicarbonate, potassium phosphonate and acid clays, while UV-C treatment did not inhibit the fungal growth of the pathogen at the tested conditions

Angeli, D.; Turrini, L.; Zeni, F.; Longa, C.; Gualandri, V.; Roman Villegas, T. (2023). Controlling white haze disease under in vitro controlled conditions. ACTA HORTICULTURAE, 1363: 95-99. doi: 10.17660/ActaHortic.2023.1363.14 handle: https://hdl.handle.net/10449/83855

Controlling white haze disease under in vitro controlled conditions

Angeli, D.
Primo
;
Turrini, L.;Zeni, F.;Longa, C.;Gualandri, V.;Roman Villegas, T.
Ultimo
2023-01-01

Abstract

Epiphytic fungi colonizing the surface of apple fruits have caused severe damages in the last years in Northern Italy. The most important disease called “white haze” is cause by the agent Tilletiopsis sp. and consists of a thin whitish to gray layer of fungal growth sticking to the cuticle of apple surface. The fungal growth may increase rapidly during the summer and harvest time but no evidence of new symptoms and spread from infected to healthy apples was observed during storage. In vitro test with different chemical fungicides and new natural compounds were performed during 2020 and 2021 to determine their capability to reduce the fungal growth on Petri plate and design new effective control strategies in the field trial. Furthermore, the effect of UV-C treatment in reducing the growth of Tilletiopsis sp. in Petri plate was investigated. Results indicate the efficacy of chemical fungicide application ranged between 4 to 100% with the full control obtained by fosetyl-Al, captano, dodine and penconazole at 20°C on PDA media. Interestingly, a full control of the pathogen was also obtained with a new natural compound based on orange oil but several others showed an acceptable control such as potassium bicarbonate, potassium phosphonate and acid clays, while UV-C treatment did not inhibit the fungal growth of the pathogen at the tested conditions
Epiphytic fungi
White haze
Apple
Chemical control
Settore AGR/15 - SCIENZE E TECNOLOGIE ALIMENTARI
2023
Angeli, D.; Turrini, L.; Zeni, F.; Longa, C.; Gualandri, V.; Roman Villegas, T. (2023). Controlling white haze disease under in vitro controlled conditions. ACTA HORTICULTURAE, 1363: 95-99. doi: 10.17660/ActaHortic.2023.1363.14 handle: https://hdl.handle.net/10449/83855
File in questo prodotto:
File Dimensione Formato  
2023 AH 1363 Angeli.pdf

solo utenti autorizzati

Tipologia: Versione editoriale (Publisher’s layout)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 1.01 MB
Formato Adobe PDF
1.01 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

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/10449/83855
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
social impact