Evaluación de fungicidas para el control del complejo fungoso Drechslera spp., Phoma spp., Sphacelia sp., Epiccocum spp. (Cerebella spp.) en inflorescencias de Brachiaria brizantha (Panicoideae, Poaceae)
More than 700 accesions of Brachiaria spp. are conserved in small quantities of seeds) in the Germoplasm Bank at CIAT s Genetic Resources Unit (GRU. These have been obtained by donations of other banks, collections of national and international seeds or collected in the sites of origin. As the seed...
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| Format: | Journal Article |
| Language: | Español |
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2002
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| Online Access: | https://hdl.handle.net/10568/44314 |
| _version_ | 1855531928059379712 |
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| author | Pineda López, Benjamín Balcázar, María del Socorro Rivera, A.L. |
| author_browse | Balcázar, María del Socorro Pineda López, Benjamín Rivera, A.L. |
| author_facet | Pineda López, Benjamín Balcázar, María del Socorro Rivera, A.L. |
| author_sort | Pineda López, Benjamín |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | More than 700 accesions of Brachiaria spp. are conserved in small quantities of seeds) in the Germoplasm Bank at CIAT s Genetic Resources Unit (GRU. These have been obtained by donations of other banks, collections of national and international seeds or collected in the sites of origin. As the seed quantities are very low and large quantities of seeds are required for characterization, conservation and distribution, it is indispensable to increase germplasm under field conditions, with the inherent risk of deterioration or loss by the action of pests and pathogens. In order to diminish the effect of these of unfavorable factors, this research was carried out, utilizing fungicides for the control of the fungi Drechslera spp., Phoma spp., Sphacelia. sp., Cerebella spp., identified as the more frequent fungi affecting the Brachiaria spp. inflorescences at the station of Santa Rosa (Popayán, Cauca), where the germplasm is increased. In vitro trials were conducted with Captan, Benomyl, Etrithiadizole+Thiophanate-methyl, Carboxin+Captan, Metallic Copper, Propiconazole, Mancozeb. Clorotalonil, Metalaxil+Mancozeb in three doses. The outputs showed that Propiconazole, Mancozeb and Metalaxil+Mancozeb, were effective against Sphacelia spp., Drechslera spp., Phoma spp. and Epiccocum spp., isolated from seeds of Brachiaria spp. Experiments carried out at the Santa Rosa station, under field conditions , with Propiconazole sprayed periodically on plots cultivated with 72 accesions of B. brizantha, and in several states of inflorescence development, showed effectiveness against Sphacelia sp. when it was sprayed at booting state and in some cases in early flowering. The evaluation of Propiconazole, Mancozeb, and Metalaxil+Mancozeb, applied every two weeks on plots of B. brizantha CIAT number 16322 starting from booting did not show notable differences, may be due at the levels of infection in the plots were very low. |
| format | Journal Article |
| id | CGSpace44314 |
| institution | CGIAR Consortium |
| language | Español |
| publishDate | 2002 |
| publishDateRange | 2002 |
| publishDateSort | 2002 |
| record_format | dspace |
| spelling | CGSpace443142025-11-12T05:57:19Z Evaluación de fungicidas para el control del complejo fungoso Drechslera spp., Phoma spp., Sphacelia sp., Epiccocum spp. (Cerebella spp.) en inflorescencias de Brachiaria brizantha (Panicoideae, Poaceae) Pineda López, Benjamín Balcázar, María del Socorro Rivera, A.L. feed crops brachiaria brizantha feed grasses fungal diseases drechslera phoma sphacelia epicoccum fungicides chemical control gramíneas forrajeras enfermedades fungosas fungicidas control químico More than 700 accesions of Brachiaria spp. are conserved in small quantities of seeds) in the Germoplasm Bank at CIAT s Genetic Resources Unit (GRU. These have been obtained by donations of other banks, collections of national and international seeds or collected in the sites of origin. As the seed quantities are very low and large quantities of seeds are required for characterization, conservation and distribution, it is indispensable to increase germplasm under field conditions, with the inherent risk of deterioration or loss by the action of pests and pathogens. In order to diminish the effect of these of unfavorable factors, this research was carried out, utilizing fungicides for the control of the fungi Drechslera spp., Phoma spp., Sphacelia. sp., Cerebella spp., identified as the more frequent fungi affecting the Brachiaria spp. inflorescences at the station of Santa Rosa (Popayán, Cauca), where the germplasm is increased. In vitro trials were conducted with Captan, Benomyl, Etrithiadizole+Thiophanate-methyl, Carboxin+Captan, Metallic Copper, Propiconazole, Mancozeb. Clorotalonil, Metalaxil+Mancozeb in three doses. The outputs showed that Propiconazole, Mancozeb and Metalaxil+Mancozeb, were effective against Sphacelia spp., Drechslera spp., Phoma spp. and Epiccocum spp., isolated from seeds of Brachiaria spp. Experiments carried out at the Santa Rosa station, under field conditions , with Propiconazole sprayed periodically on plots cultivated with 72 accesions of B. brizantha, and in several states of inflorescence development, showed effectiveness against Sphacelia sp. when it was sprayed at booting state and in some cases in early flowering. The evaluation of Propiconazole, Mancozeb, and Metalaxil+Mancozeb, applied every two weeks on plots of B. brizantha CIAT number 16322 starting from booting did not show notable differences, may be due at the levels of infection in the plots were very low. En el Banco de Germoplasma de la Unidad de Recursos Genéticos (URG) del CIAT más de 700 accesiones de Brachiaria spp. son conservadas en pequeñas cantidades de semilla; estas accesiones han sido obtenidas por donaciones de otros bancos, colecciones nacionales e internacionales o colectas en los sitios de origen. Debido a que las cantidades son muy bajas y se requiere una mayor disponibilidad de semillas para caracterización, conservación y distribución, es indispensable recurrir al incremento bajo condiciones de campo, con el riesgo inherente de deterioro o pérdida por la acción dE plagas o patógenos. Para disminuir el efecto de estos factores adversos se realizó la presente investigación, utilizando fungicidas para el control de los hongos Drechslera spp., Phoma spp., Sphacelia sp., Cerebella spp., identificados como los más frecuentes afectando las inflorescencias en la estación de Santa Rosa (Popayán, Cauca), en donde se incrementa el germoplasma. Inicialmente se adelantaron ensayos in vitro con los productos Captan, Benomyl, Etrithiadizole + Thiophanate-methyl, Carboxin + Captan, Cobre metálico, Propiconazo, Mancozeb, Clorotalonil, Metalaxil+ Mancozeb en tres dosis. Los resultados obtenidos mostraron que Propiconazole, Mancozeb y Metalaxil + Mancozeb, fueron efectivos contra aislamientos de Sphacelia spp., Drechslera spp., PhoMa spp y Epiccocum spp. obtenidos de semillas de Brachiaria spp. Experimentos conducidos en la estación de Santa Rosa bajo condiciones de campo, con Propiconazole aspeRJado periódicamente sobre parcelas cultivadas con 72 accesiones de B. brizantha en diferentes estados de desarrollo de las inflorescencias mostraron efectividad contra Sphacelia sp. cuando se aplicó en embuchamiento y en algunos casos en floración temprana. Las evaluaciones de Propiconazole, Mancozeb y Metalaxil + Mancozeb, aplicados quincenalmente en parcelas de la accesión de B. brizantha No CIAT 16322 a partir de embuchamiento no mostraron mayores diferencias pues los niveles de infección en general fueron muy bajos. 2002 2014-10-02T08:33:35Z 2014-10-02T08:33:35Z Journal Article https://hdl.handle.net/10568/44314 es Open Access application/pdf Pineda L, B., M.S. Balcázar, A.L. Rivera. 2002. Evaluación de fungicidas para el control del complejo fungoso Drechslera spp., Phoma spp., Sphacelia sp., Epiccocum spp. (Cerebella spp.) en inflorescencias de Brachiaria brizantha (Panicoidea, Poaceae). Fitopatología Colombiana 26 (1): 13-19. |
| spellingShingle | feed crops brachiaria brizantha feed grasses fungal diseases drechslera phoma sphacelia epicoccum fungicides chemical control gramíneas forrajeras enfermedades fungosas fungicidas control químico Pineda López, Benjamín Balcázar, María del Socorro Rivera, A.L. Evaluación de fungicidas para el control del complejo fungoso Drechslera spp., Phoma spp., Sphacelia sp., Epiccocum spp. (Cerebella spp.) en inflorescencias de Brachiaria brizantha (Panicoideae, Poaceae) |
| title | Evaluación de fungicidas para el control del complejo fungoso Drechslera spp., Phoma spp., Sphacelia sp., Epiccocum spp. (Cerebella spp.) en inflorescencias de Brachiaria brizantha (Panicoideae, Poaceae) |
| title_full | Evaluación de fungicidas para el control del complejo fungoso Drechslera spp., Phoma spp., Sphacelia sp., Epiccocum spp. (Cerebella spp.) en inflorescencias de Brachiaria brizantha (Panicoideae, Poaceae) |
| title_fullStr | Evaluación de fungicidas para el control del complejo fungoso Drechslera spp., Phoma spp., Sphacelia sp., Epiccocum spp. (Cerebella spp.) en inflorescencias de Brachiaria brizantha (Panicoideae, Poaceae) |
| title_full_unstemmed | Evaluación de fungicidas para el control del complejo fungoso Drechslera spp., Phoma spp., Sphacelia sp., Epiccocum spp. (Cerebella spp.) en inflorescencias de Brachiaria brizantha (Panicoideae, Poaceae) |
| title_short | Evaluación de fungicidas para el control del complejo fungoso Drechslera spp., Phoma spp., Sphacelia sp., Epiccocum spp. (Cerebella spp.) en inflorescencias de Brachiaria brizantha (Panicoideae, Poaceae) |
| title_sort | evaluacion de fungicidas para el control del complejo fungoso drechslera spp phoma spp sphacelia sp epiccocum spp cerebella spp en inflorescencias de brachiaria brizantha panicoideae poaceae |
| topic | feed crops brachiaria brizantha feed grasses fungal diseases drechslera phoma sphacelia epicoccum fungicides chemical control gramíneas forrajeras enfermedades fungosas fungicidas control químico |
| url | https://hdl.handle.net/10568/44314 |
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