Field Evaluation of Fungicides for the Management of Neofabraea Leaf Lesion of Olive in California

Field experiments were conducted during the fall-winter seasons of 2017 to 2018 and 2018 to 2019 to evaluate the efficacy of various fungicides to control Neofabraea leaf lesion of olive. Field trials were conducted in the highly susceptible cultivar Arbosana in a commercial, super-high-density orch...

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Veröffentlicht in:Plant disease. - 1997. - 107(2023), 10 vom: 30. Okt., Seite 3079-3084
1. Verfasser: Trouillas, Florent P (VerfasserIn)
Weitere Verfasser: Travadon, Renaud, Nouri, Mohamed T, Lawrence, Daniel P
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article Neofabraea Olea europaea Phlyctema chemical control disease prevention resistance management Fungicides, Industrial
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520 |a Field experiments were conducted during the fall-winter seasons of 2017 to 2018 and 2018 to 2019 to evaluate the efficacy of various fungicides to control Neofabraea leaf lesion of olive. Field trials were conducted in the highly susceptible cultivar Arbosana in a commercial, super-high-density orchard in San Joaquin County, California. Up to eight fungicidal products were applied using an air blast backpack sprayer, and their efficacy was compared with different application strategies. Results showed that most products were effective in reducing infection by the pathogens and limiting disease severity. Overall, best disease control was achieved by thiophanate-methyl, cyprodinil, difenoconazole + cyprodinil, and chlorothalonil, providing up to 75% reduction in disease severity. Copper hydroxide did not control the disease. In 2018 to 2019, the fungicides difenoconazole + cyprodinil and ziram were evaluated in additional field trials using different application strategies (single, dual, and combined applications) suitable for pathogen resistance management. Results showed that both products provided significant reduction in disease severity (∼50%), although no differences in efficacy were found between the two products nor between the different application strategies. Both products performed equally using one or two applications at 2-week intervals following harvest 
650 4 |a Journal Article 
650 4 |a Neofabraea 
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650 4 |a Phlyctema 
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700 1 |a Travadon, Renaud  |e verfasserin  |4 aut 
700 1 |a Nouri, Mohamed T  |e verfasserin  |4 aut 
700 1 |a Lawrence, Daniel P  |e verfasserin  |4 aut 
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