Evaluación de fungicidas para el control de Alternaria sp. en brócoli (Brassica oleracea var. italica).
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2020-12
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Universidad EARTH
Resumen
En la siguiente investigación se realizó una evaluación de combinaciones de fungicidas orgánicos y sintéticos en campo para el control de Alternaria sp. Los ingredientes activos utilizados en diferentes presentaciones comerciales y combinaciones en los seis diferentes tratamientos fueron azoxistrobina, boscalid, chlorothalonil, difeconazole, metalaxil, piraclostrobina, cobre, sulfato cuprocalcico, B. subtillis y concentrado de levaduras. Se evaluaron las variables de altura, número de hojas, incidencia a Alternaria sp,, peso y diámetro de inflorescencia y calidad. Todos los tratamientos fueron efectivos para el control de Alternaria sp. ya que presentaron incidencia de la enfermedad en la inflorescencia en porcentajes de 0 % a 0,32 %, sin embargo, el tratamiento 0 (Foraxil®, Bravo®, Bordocop®, Patrón®, Twin®, Bravo®, Patrón® y Bordocop®) mostró ser el más efectivo en cuanto al término costo-beneficio debido a su costo, 0 % de incidencia a Alternaria sp y su buen rendimiento. En base a estos resultados, tres entrevistas semiestructuradas realizadas a expertos en el cultivo y una revisión bibliográfica de las generalidades del brócoli, principales enfermedades y del Manejo Integrado de Enfermedades en el cultivo se elaboró un Manual sobre el Manejo Integrado de Enfermedades en el cultivo de brócoli (Brassica oleracea var. italica) dirigido a agricultores.
In the following investigation, an evaluation of combinations of organic and synthetic fungicides was carried out in the field for the control of Alternaria sp. The active ingredients used in different commercial presentations and combinations in the six different treatments were azoxystrobin, boscalid, chlorothalonil, difeconazole, metalaxyl, pyraclostrobin, copper, cuprocalcium sulfate, B. subtillis, and yeast concentrate. The variables of height, number of leaves, incidence of Alternaria sp., weight and diameter of inflorescence and quality were evaluated. All treatments were effective for the control of Alternaria sp. since they presented incidence of the disease in the inflorescence in percentages from 0% to 0.32%, however, treatment 0 (Foraxil®, Bravo®, Bordocop®, Patrón®, Twin®, Bravo®, Patrón® and Bordocop ®) was shown to be the most effective in terms of cost-benefit terms due to its cost, 0% incidence of Alternaria sp and its good performance. Based on these results, three semi-structured interviews carried out with experts in the crop and a bibliographic review of the generalities of broccoli, main diseases and Integrated Management of Diseases in cultivation, a Manual on Integrated Management of Diseases in cultivation of broccoli (Brassica oleracea var. italica) aimed at farmers.
In the following investigation, an evaluation of combinations of organic and synthetic fungicides was carried out in the field for the control of Alternaria sp. The active ingredients used in different commercial presentations and combinations in the six different treatments were azoxystrobin, boscalid, chlorothalonil, difeconazole, metalaxyl, pyraclostrobin, copper, cuprocalcium sulfate, B. subtillis, and yeast concentrate. The variables of height, number of leaves, incidence of Alternaria sp., weight and diameter of inflorescence and quality were evaluated. All treatments were effective for the control of Alternaria sp. since they presented incidence of the disease in the inflorescence in percentages from 0% to 0.32%, however, treatment 0 (Foraxil®, Bravo®, Bordocop®, Patrón®, Twin®, Bravo®, Patrón® and Bordocop ®) was shown to be the most effective in terms of cost-benefit terms due to its cost, 0% incidence of Alternaria sp and its good performance. Based on these results, three semi-structured interviews carried out with experts in the crop and a bibliographic review of the generalities of broccoli, main diseases and Integrated Management of Diseases in cultivation, a Manual on Integrated Management of Diseases in cultivation of broccoli (Brassica oleracea var. italica) aimed at farmers.
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FUNGICIDAS, ALTERNARIA, CONTROL DE ENFERMEDADES EN PLANTAS, BRASSICA OLERACEA