Validation of black spot [(Pseudocercospora purpurea (Cooke) Deighton] management strategies in avocado crops in northern Tolima (Colombia)
Leaf spot or black spot (BS) in avocado, caused by the fungus Pseudocercospora purpurea (Cooke) Deighton, is one of the main sanitary limitations for the production of avocado, particularly for the Antillean cultivars (Lorena, Choquette, Santana, and Semil 44) in the northern region of the departmen...
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Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC
2020
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| author | Rodríguez-Polanco, Eleonora Reina-Noreña, Julian Alberto Tamayo-Molano, Pablo Julian Rodríguez-Polanco, Luz Astrid Varón-Devia, Edgar Herney |
| author_facet | Rodríguez-Polanco, Eleonora Reina-Noreña, Julian Alberto Tamayo-Molano, Pablo Julian Rodríguez-Polanco, Luz Astrid Varón-Devia, Edgar Herney |
| author_sort | Rodríguez-Polanco, Eleonora |
| collection | OJS |
| description | Leaf spot or black spot (BS) in avocado, caused by the fungus Pseudocercospora purpurea (Cooke) Deighton, is one of the main sanitary limitations for the production of avocado, particularly for the Antillean cultivars (Lorena, Choquette, Santana, and Semil 44) in the northern region of the department of Tolima, Colombia. During 2014-2017, different experiments were carried out in the field, aiming to determine the period of higher fruit susceptibility, the effect of pruning on inoculum reduction, and chemical molecules with a high degree of control, adjusting their chronology and frequency of application. The results allow the technical, economic, and environmental implementation and validation of a chemical strategy for management of this disease. The management strategy carried out by Agrosavia reported a 10% lower incidence of BS in fruits, compared to the one carried out by producers, and a 23.75% return, due to the increase in high quality fruits. In the latter, DMI fungicides (demethylation inhibitors), even without resistance reports, and fungicides with a mixture of two active ingredients (DMI and QoI) in interspersed application and sometimes in conjunction with CuOCl during periods of higher susceptibility to BS were used, aiming to reduce the resistance induction risk in P. purpurea. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-10169 |
| institution | Revista Colombiana de Ciencias Hortícolas |
| language | eng |
| publishDate | 2020 |
| publisher | Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC |
| record_format | ojs |
| spelling | oai:oai.revistas.uptc.edu.co:article-101692021-01-29T16:11:24Z Validation of black spot [(Pseudocercospora purpurea (Cooke) Deighton] management strategies in avocado crops in northern Tolima (Colombia) Validación de estrategias de manejo de la peca [(Pseudocercospora purpurea (Cooke) Deighton] en cultivos de aguacate en el norte del Tolima (Colombia) Rodríguez-Polanco, Eleonora Reina-Noreña, Julian Alberto Tamayo-Molano, Pablo Julian Rodríguez-Polanco, Luz Astrid Varón-Devia, Edgar Herney Lorena cultivar Chemical control Leaf spot Persea americana Fruit Diseases Cultivar Lorena Mancha negra Control químico Persea americana Frutales Enfermedades Leaf spot or black spot (BS) in avocado, caused by the fungus Pseudocercospora purpurea (Cooke) Deighton, is one of the main sanitary limitations for the production of avocado, particularly for the Antillean cultivars (Lorena, Choquette, Santana, and Semil 44) in the northern region of the department of Tolima, Colombia. During 2014-2017, different experiments were carried out in the field, aiming to determine the period of higher fruit susceptibility, the effect of pruning on inoculum reduction, and chemical molecules with a high degree of control, adjusting their chronology and frequency of application. The results allow the technical, economic, and environmental implementation and validation of a chemical strategy for management of this disease. The management strategy carried out by Agrosavia reported a 10% lower incidence of BS in fruits, compared to the one carried out by producers, and a 23.75% return, due to the increase in high quality fruits. In the latter, DMI fungicides (demethylation inhibitors), even without resistance reports, and fungicides with a mixture of two active ingredients (DMI and QoI) in interspersed application and sometimes in conjunction with CuOCl during periods of higher susceptibility to BS were used, aiming to reduce the resistance induction risk in P. purpurea. La peca o mancha negra del aguacate causada por el hongo Pseudocercospora purpurea (Cooke) Deighton, es una de las principales limitantes sanitarias para la producción de aguacate de los cultivares antillanos (Lorena, Choquette, Santana y Semil 44) en la región productora del norte del departamento del Tolima, Colombia. Durante 2014-2017, se realizaron diferentes experimentos en campo con el propósito de determinar la época de mayor susceptibilidad del fruto, el efecto de la poda en la disminución del inóculo, y la selección de moléculas químicas con mayor grado de control, ajuste de su cronología y frecuencia de aplicación. Estos resultados permitieron la implementación y validación técnica, económica y ambiental de una estrategia química de manejo de la enfermedad. La estrategia de manejo realizada por Agrosavia (MA) reportó una incidencia de peca en fruto menor en un 10% en comparación con la observada en el manejo realizado por los productores (MP), con una rentabilidad de 23,75% debida al incremento de frutos de primera calidad. En esta última se emplearon fungicidas DMI (inhibidores de la demetilación) aún sin reportes de resistencia, fungicidas con mezcla de dos ingredientes activos (DMI y QoI) en aplicación intercalada, y algunas veces en conjunto con CuOCl durante la época de mayor susceptibilidad de los frutos a la peca, encaminada a disminuir el riesgo de inducción de resistencia en P. purpurea. Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC 2020-05-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Text Texto application/pdf https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/10169 10.17584/rcch.2020v14i2.10169 Revista Colombiana de Ciencias Hortícolas; Vol. 14 No. 2 (2020); 178-191 Revista Colombiana de Ciencias Hortícolas; Vol. 14 Núm. 2 (2020); 178-191 Revista Colombiana de Ciencias Hortícolas; Vol. 14 No 2 (2020); 178-191 Revista Colombiana de Ciencias Hortícolas; V. 14 N. 2 (2020); 178-191 Revista Colombiana de Ciencias Hortícolas; v. 14 n. 2 (2020); 178-191 2422-3719 2011-2173 eng https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/10169/9389 Colombia; Tolima; El Espinal Colombia; Tolima; El Espinal Copyright (c) 2020 Revista Colombiana de Ciencias Hortícolas |
| spellingShingle | Lorena cultivar Chemical control Leaf spot Persea americana Fruit Diseases Cultivar Lorena Mancha negra Control químico Persea americana Frutales Enfermedades Rodríguez-Polanco, Eleonora Reina-Noreña, Julian Alberto Tamayo-Molano, Pablo Julian Rodríguez-Polanco, Luz Astrid Varón-Devia, Edgar Herney Validation of black spot [(Pseudocercospora purpurea (Cooke) Deighton] management strategies in avocado crops in northern Tolima (Colombia) |
| title | Validation of black spot [(Pseudocercospora purpurea (Cooke) Deighton] management strategies in avocado crops in northern Tolima (Colombia) |
| title_alt | Validación de estrategias de manejo de la peca [(Pseudocercospora purpurea (Cooke) Deighton] en cultivos de aguacate en el norte del Tolima (Colombia) |
| title_full | Validation of black spot [(Pseudocercospora purpurea (Cooke) Deighton] management strategies in avocado crops in northern Tolima (Colombia) |
| title_fullStr | Validation of black spot [(Pseudocercospora purpurea (Cooke) Deighton] management strategies in avocado crops in northern Tolima (Colombia) |
| title_full_unstemmed | Validation of black spot [(Pseudocercospora purpurea (Cooke) Deighton] management strategies in avocado crops in northern Tolima (Colombia) |
| title_short | Validation of black spot [(Pseudocercospora purpurea (Cooke) Deighton] management strategies in avocado crops in northern Tolima (Colombia) |
| title_sort | validation of black spot pseudocercospora purpurea cooke deighton management strategies in avocado crops in northern tolima colombia |
| topic | Lorena cultivar Chemical control Leaf spot Persea americana Fruit Diseases Cultivar Lorena Mancha negra Control químico Persea americana Frutales Enfermedades |
| topic_facet | Lorena cultivar Chemical control Leaf spot Persea americana Fruit Diseases Cultivar Lorena Mancha negra Control químico Persea americana Frutales Enfermedades |
| url | https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/10169 |
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