Dodine an effective alternative to copper for controlling Venturia oleaginea, the causal agent of pea-cock eye disease, in highly infected olive trees

A trial was carried out in central Italy in an olive orchard of cultivar Moraiolo, highly infected by Venturia oleaginea. The aim of the investigation was to evaluate the effects of autumn and spring applications of copper oxychloride or dodine to control the disease. Non treated trees were used as...

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Main Authors: Leen Almadi, Tommaso Frioni, Daniela Farinelli, Andrea Paoletti, Nicola Cinosi, Adolfo Rosati, Chiaraluce Moretti, Roberto Buonaurio, Franco Famiani
Format: Article
Language:English
Published: Frontiers Media S.A. 2024-03-01
Series:Frontiers in Plant Science
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fpls.2024.1369048/full
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author Leen Almadi
Tommaso Frioni
Daniela Farinelli
Andrea Paoletti
Nicola Cinosi
Adolfo Rosati
Chiaraluce Moretti
Roberto Buonaurio
Franco Famiani
author_facet Leen Almadi
Tommaso Frioni
Daniela Farinelli
Andrea Paoletti
Nicola Cinosi
Adolfo Rosati
Chiaraluce Moretti
Roberto Buonaurio
Franco Famiani
author_sort Leen Almadi
collection DOAJ
description A trial was carried out in central Italy in an olive orchard of cultivar Moraiolo, highly infected by Venturia oleaginea. The aim of the investigation was to evaluate the effects of autumn and spring applications of copper oxychloride or dodine to control the disease. Non treated trees were used as the control. The effects of the fungal attacks on leaves and inflorescence development confirmed the high susceptibility of the cultivar Moraiolo to the disease. The results show that in trees heavily infected, but with most of the infected leaves at the early stage of the disease (asymptomatic phase), treatments with dodine had a curative effect, with consequent reduction in the appearance of symptomatic leaves and defoliation with respect to the control or copper-treated trees. The use of dodine against the autumnal attacks of V. oleaginea allowed most of the old leaves to be maintained until the new ones had formed, which is important for the growth processes during the early part of the growing season. Overall, the results indicate that to efficiently control the pathogen using copper compounds, treatments must start soon after the beginning of the attack and be repeated in order to maintain the infection at a low level. Dodine can be efficiently used if there is a great increase in infected leaves. The use of dodine to solve particular situations and not for normal repeated use is regulated by the fact that in some countries, Italy included, protocols for integrated pest management allow only one dodine treatment/year.
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spelling doaj.art-acc65310dc254f76b081fb15b3c65b272024-03-07T04:41:31ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2024-03-011510.3389/fpls.2024.13690481369048Dodine an effective alternative to copper for controlling Venturia oleaginea, the causal agent of pea-cock eye disease, in highly infected olive treesLeen Almadi0Tommaso Frioni1Daniela Farinelli2Andrea Paoletti3Nicola Cinosi4Adolfo Rosati5Chiaraluce Moretti6Roberto Buonaurio7Franco Famiani8Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, ItalyDipartimento di Scienze delle produzioni vegetali sostenibili, Università Cattolica del Sacro Cuore, Piacenza, ItalyDipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, ItalyDipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, ItalyDipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, ItalyConsiglio per la Ricerca in Agricoltura e l’analisi dell’Economia Agraria, Centro di Ricerca OLIVICOLTURA, Frutticoltura e Agrumicoltura (CREA–OFA), Spoleto, ItalyDipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, ItalyDipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, ItalyDipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, ItalyA trial was carried out in central Italy in an olive orchard of cultivar Moraiolo, highly infected by Venturia oleaginea. The aim of the investigation was to evaluate the effects of autumn and spring applications of copper oxychloride or dodine to control the disease. Non treated trees were used as the control. The effects of the fungal attacks on leaves and inflorescence development confirmed the high susceptibility of the cultivar Moraiolo to the disease. The results show that in trees heavily infected, but with most of the infected leaves at the early stage of the disease (asymptomatic phase), treatments with dodine had a curative effect, with consequent reduction in the appearance of symptomatic leaves and defoliation with respect to the control or copper-treated trees. The use of dodine against the autumnal attacks of V. oleaginea allowed most of the old leaves to be maintained until the new ones had formed, which is important for the growth processes during the early part of the growing season. Overall, the results indicate that to efficiently control the pathogen using copper compounds, treatments must start soon after the beginning of the attack and be repeated in order to maintain the infection at a low level. Dodine can be efficiently used if there is a great increase in infected leaves. The use of dodine to solve particular situations and not for normal repeated use is regulated by the fact that in some countries, Italy included, protocols for integrated pest management allow only one dodine treatment/year.https://www.frontiersin.org/articles/10.3389/fpls.2024.1369048/fulldodinecopper oxychlorideOlea europaea L.peacock eye diseaseVenturia oleaginea
spellingShingle Leen Almadi
Tommaso Frioni
Daniela Farinelli
Andrea Paoletti
Nicola Cinosi
Adolfo Rosati
Chiaraluce Moretti
Roberto Buonaurio
Franco Famiani
Dodine an effective alternative to copper for controlling Venturia oleaginea, the causal agent of pea-cock eye disease, in highly infected olive trees
Frontiers in Plant Science
dodine
copper oxychloride
Olea europaea L.
peacock eye disease
Venturia oleaginea
title Dodine an effective alternative to copper for controlling Venturia oleaginea, the causal agent of pea-cock eye disease, in highly infected olive trees
title_full Dodine an effective alternative to copper for controlling Venturia oleaginea, the causal agent of pea-cock eye disease, in highly infected olive trees
title_fullStr Dodine an effective alternative to copper for controlling Venturia oleaginea, the causal agent of pea-cock eye disease, in highly infected olive trees
title_full_unstemmed Dodine an effective alternative to copper for controlling Venturia oleaginea, the causal agent of pea-cock eye disease, in highly infected olive trees
title_short Dodine an effective alternative to copper for controlling Venturia oleaginea, the causal agent of pea-cock eye disease, in highly infected olive trees
title_sort dodine an effective alternative to copper for controlling venturia oleaginea the causal agent of pea cock eye disease in highly infected olive trees
topic dodine
copper oxychloride
Olea europaea L.
peacock eye disease
Venturia oleaginea
url https://www.frontiersin.org/articles/10.3389/fpls.2024.1369048/full
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