Effectiveness of reduced doses of flumioxazin herbicide at weed control in direct sow onions
The recommended application of most herbicides in onion crops is after transplanting seedlings with four true leaves. In the direct sowing system, this recommendation is considered late; an alternative management is the application of reduced doses starting with a true leaf. The objective of this st...
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| Format: | Online |
| Language: | eng |
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Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC
2019
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| Online Access: | https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/7938 |
| _version_ | 1801706282644668416 |
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| author | Melo, Christiane Augusta Diniz Barbosa, Amanda Rocha Dias, Roque de Carvalho Silva, Gustavo Soares da Reis, Marcelo Rodrigues dos |
| author_facet | Melo, Christiane Augusta Diniz Barbosa, Amanda Rocha Dias, Roque de Carvalho Silva, Gustavo Soares da Reis, Marcelo Rodrigues dos |
| author_sort | Melo, Christiane Augusta Diniz |
| collection | OJS |
| description | The recommended application of most herbicides in onion crops is after transplanting seedlings with four true leaves. In the direct sowing system, this recommendation is considered late; an alternative management is the application of reduced doses starting with a true leaf. The objective of this study was to evaluate the use of reduced doses of flumioxazin in the early phenological stages of onions on bulb yield. Two field experiments were installed, and five doses of flumioxazin (5, 10, 15, 20, and 25 g ha-1) were applied in three phenological stages (1st, 2nd, and 1st+3rd true leaf); weed control was carried out. The results demonstrated the efficacy of reduced doses of flumioxazin on onion crop in the early stages. The dose of 20 g ha-1 showed use potential in the two experiments for the cvs. Perfecta and Sirius, enabling reductions of 77 to 88% of the commercial dose recommended for onions established with seedling transplanting. The application of flumioxazin in the 2nd leaf reduced commercial productivity and was ineffective in the control of weeds. The application in the 1st + 3rd leaf, despite being an effective control, caused greater phytotoxicity and, therefore, reduced commercial productivity. The best strategy for weed management is 20 g ha-1 flumioxazin applied to onion plants when they reach the true first leaf stage. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-7938 |
| institution | Revista Colombiana de Ciencias Hortícolas |
| language | eng |
| publishDate | 2019 |
| 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-79382020-08-03T23:55:47Z Effectiveness of reduced doses of flumioxazin herbicide at weed control in direct sow onions Efectividad del herbicida flumioxazin a dosis reducida para el control de malezas en cebollas de siembra directa Melo, Christiane Augusta Diniz Barbosa, Amanda Rocha Dias, Roque de Carvalho Silva, Gustavo Soares da Reis, Marcelo Rodrigues dos Allium cepa Bulb yield Herbicide Phytotoxicity Plant Production Herbicides Allium cepa Rendimiento de bulbos Herbicida Fitotoxicidad Producción de plantas Herbicidas The recommended application of most herbicides in onion crops is after transplanting seedlings with four true leaves. In the direct sowing system, this recommendation is considered late; an alternative management is the application of reduced doses starting with a true leaf. The objective of this study was to evaluate the use of reduced doses of flumioxazin in the early phenological stages of onions on bulb yield. Two field experiments were installed, and five doses of flumioxazin (5, 10, 15, 20, and 25 g ha-1) were applied in three phenological stages (1st, 2nd, and 1st+3rd true leaf); weed control was carried out. The results demonstrated the efficacy of reduced doses of flumioxazin on onion crop in the early stages. The dose of 20 g ha-1 showed use potential in the two experiments for the cvs. Perfecta and Sirius, enabling reductions of 77 to 88% of the commercial dose recommended for onions established with seedling transplanting. The application of flumioxazin in the 2nd leaf reduced commercial productivity and was ineffective in the control of weeds. The application in the 1st + 3rd leaf, despite being an effective control, caused greater phytotoxicity and, therefore, reduced commercial productivity. The best strategy for weed management is 20 g ha-1 flumioxazin applied to onion plants when they reach the true first leaf stage. Se recomienda en la mayoría de las veces la aplicación de herbicidas en cultivos de cebolla después del trasplante, cuando las plántulas tienen cuatro hojas verdaderas. En el sistema de siembra directa esta recomendación se considera tardía y una alternativa es la aplicación de menores dosis desde la aparición de una hoja verdadera de la cebolla. El objetivo de este estudio fue evaluar dosis reducidas de flumioxazina en estadios fenológicos tempranos de cebolla sobre el rendimiento de los bulbos. Se realizaron dos experimentos de campo y se aplicaron cinco dosis de flumioxazina (5, 10, 15, 20 y 25 g ha-1) en tres estadios fenológicos (1ª, 2ª y 1ª+3ª hoja verdadera), manteniendo un control con deshierbe manual. Los resultados demostraron la eficacia de dosis reducidas de flumioxazina en el cultivo de cebolla en estadios fenológicos tempranos. La dosis de 20 g ha-1 mostró un potencial en los dos experimentos para cultivares Perfecta y Sirius, lo que permite reducirse entre el 77 y 88% de la dosis comercial recomendada en plántulas cebolla trasplantada. La aplicación de flumioxazina en la 2a hoja redujo la productividad comercial y fue ineficaz en el control de malezas. La aplicación en la 1ª + 3ª hoja, a pesar de ser efectiva en el control, provocó una mayor fitotoxicidad y, por lo tanto, redujo la productividad comercial. La mejor estrategia para el manejo de malezas es 20 g ha-1 de flumioxazina aplicada a las plantas de cebolla cuando alcanzan la etapa de la primera hoja verdadera. Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC 2019-01-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Text Texto Texte Testo Texto application/pdf https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/7938 10.17584/rcch.2018v12i3.7938 Revista Colombiana de Ciencias Hortícolas; Vol. 13 No. 1 (2019); 71-80 Revista Colombiana de Ciencias Hortícolas; Vol. 13 Núm. 1 (2019); 71-80 Revista Colombiana de Ciencias Hortícolas; Vol. 13 No 1 (2019); 71-80 Revista Colombiana de Ciencias Hortícolas; V. 13 N. 1 (2019); 71-80 Revista Colombiana de Ciencias Hortícolas; v. 13 n. 1 (2019); 71-80 2422-3719 2011-2173 eng https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/7938/8559 Brazil; Rio Paranaíba; 2016 Brazil; Rio Paranaíba; 2016 Brazil; Rio Paranaíba; 2016 Brazil; Rio Paranaíba; 2016 Brazil; Rio Paranaíba; 2016 Copyright (c) 2019 Revista Colombiana de Ciencias Hortícolas |
| spellingShingle | Allium cepa Bulb yield Herbicide Phytotoxicity Plant Production Herbicides Allium cepa Rendimiento de bulbos Herbicida Fitotoxicidad Producción de plantas Herbicidas Melo, Christiane Augusta Diniz Barbosa, Amanda Rocha Dias, Roque de Carvalho Silva, Gustavo Soares da Reis, Marcelo Rodrigues dos Effectiveness of reduced doses of flumioxazin herbicide at weed control in direct sow onions |
| title | Effectiveness of reduced doses of flumioxazin herbicide at weed control in direct sow onions |
| title_alt | Efectividad del herbicida flumioxazin a dosis reducida para el control de malezas en cebollas de siembra directa |
| title_full | Effectiveness of reduced doses of flumioxazin herbicide at weed control in direct sow onions |
| title_fullStr | Effectiveness of reduced doses of flumioxazin herbicide at weed control in direct sow onions |
| title_full_unstemmed | Effectiveness of reduced doses of flumioxazin herbicide at weed control in direct sow onions |
| title_short | Effectiveness of reduced doses of flumioxazin herbicide at weed control in direct sow onions |
| title_sort | effectiveness of reduced doses of flumioxazin herbicide at weed control in direct sow onions |
| topic | Allium cepa Bulb yield Herbicide Phytotoxicity Plant Production Herbicides Allium cepa Rendimiento de bulbos Herbicida Fitotoxicidad Producción de plantas Herbicidas |
| topic_facet | Allium cepa Bulb yield Herbicide Phytotoxicity Plant Production Herbicides Allium cepa Rendimiento de bulbos Herbicida Fitotoxicidad Producción de plantas Herbicidas |
| url | https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/7938 |
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