Alternaria brown spot (ABS) is one of the main diseases of mandarins and their hybrids. Its control is based on fungicide applications, but their use is facing difficulties related to the development of resistant pathogen strains and adverse effects on animals, humans and the environment. The present study was undertaken to find feasible alternative solutions to control ABS, by testing the effectiveness of phenolic compounds and alternative formulations present on the market. They were tested in vitro and in vivo on a laboratory scale and then in semicommercial conditions. Umbelliferone was the most effective phenolic compound in controlling by 86% ABS on mandarins cv. Fortune in semi-commercial conditions. Its effect seemed related to the ability of inducing resistance in the host. Whereas among the formulations, chitosan-based HendophytPS and salt-based FortisolCaPlus gave the best results in field-scale trials, with a reduction of disease incidence by 59–63 and 54–75% on fruit and leaves, respectively, as compared to the control, being the effect similar to that obtained by chemical controls. The formulations showed mainly to induce host resistance. The application of proposed alternative treatments, singly or in a combined strategy, might represent an interesting substitute to synthetic fungicides against ABS.

Pre- and postharvest application of alternative means to control Alternaria brown spot of citrus / Garganese, F; Sanzani, Sm; Di Rella, D; Schena, Leonardo; Ippolito, A. - In: CROP PROTECTION. - ISSN 0261-2194. - 121:(2019), pp. 73-79. [10.1016/j.cropro.2019.03.014]

Pre- and postharvest application of alternative means to control Alternaria brown spot of citrus

SCHENA, Leonardo;
2019-01-01

Abstract

Alternaria brown spot (ABS) is one of the main diseases of mandarins and their hybrids. Its control is based on fungicide applications, but their use is facing difficulties related to the development of resistant pathogen strains and adverse effects on animals, humans and the environment. The present study was undertaken to find feasible alternative solutions to control ABS, by testing the effectiveness of phenolic compounds and alternative formulations present on the market. They were tested in vitro and in vivo on a laboratory scale and then in semicommercial conditions. Umbelliferone was the most effective phenolic compound in controlling by 86% ABS on mandarins cv. Fortune in semi-commercial conditions. Its effect seemed related to the ability of inducing resistance in the host. Whereas among the formulations, chitosan-based HendophytPS and salt-based FortisolCaPlus gave the best results in field-scale trials, with a reduction of disease incidence by 59–63 and 54–75% on fruit and leaves, respectively, as compared to the control, being the effect similar to that obtained by chemical controls. The formulations showed mainly to induce host resistance. The application of proposed alternative treatments, singly or in a combined strategy, might represent an interesting substitute to synthetic fungicides against ABS.
2019
Alternaria alternata
Citrus
Salts
Chitosan
Phenolic compounds
File in questo prodotto:
File Dimensione Formato  
Garganese_2019_Crop prot_Pre-_post.pdf

Open Access dal 22/03/2020

Descrizione: Post-print dell'autore
Tipologia: Documento in Post-print
Licenza: Creative commons
Dimensione 1.06 MB
Formato Adobe PDF
1.06 MB Adobe PDF Visualizza/Apri
Garganese_2019_Crop prot_Pre-_editor.pdf

non disponibili

Descrizione: Versione editoriale
Tipologia: Versione Editoriale (PDF)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 716.97 kB
Formato Adobe PDF
716.97 kB 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/20.500.12318/1406
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 18
  • ???jsp.display-item.citation.isi??? 16
social impact