Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

Postemergence Weed Control with Glyphosate Plus Flumioxazin Combinations

Glenn Wehtje, Charles H. Gilliam and Stephen C. Marble
Weed Technology
Vol. 24, No. 3 (JULY-SEPTEMBER 2010), pp. 356-360
Stable URL: http://www.jstor.org/stable/40801448
Page Count: 5
  • Read Online (Free)
  • Download ($29.00)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Postemergence Weed Control with Glyphosate Plus Flumioxazin Combinations
Preview not available

Abstract

Glyphosate plus flumioxazin tank mixtures have become popular in the nursery production and landscape maintenance industries in the southeastern United States. Research was conducted to compare the efficacy of such a mixture relative to the components applied alone. Glyphosate, flumioxazin, and glyphosate plus flumioxazin (2 : 1 , w/w) were applied POST in container trials to four weed species at a series of rates that ranged from no effect to death. Regression analyses revealed that control data from all three treatment series could be described by the four-parameter, log-logistic model. With respect to glyphosate and flumioxazin applied alone, analysis revealed that across all four species, a lower rate of flumioxazin was required for 90% control than of glyphosate. The rate of the mixture required for 90% control was generally intermediate to the components applied alone and ranged from 0.36 kg ha⁻¹ for hairy bittercress to 1.52 kg ha⁻¹ for ecliptaGlyphosate alone was more cost effective than either flumioxazin alone or the mixture for the POST-applied control of all four species. The popularity of the tank mixture might be the result of flumioxazin-based PRE activity that was not measured in this study. Se han popularizado las mezclas de glifosato más flumioxazin en las industrias de producción en invernadero y de mantenimiento de jardines en el sudeste de los Estados Unidos. Esta investigatión tuvo como objetivo comparar la eficacia de una mezcla de este tipo relativa a los componentes aplicados individualmente. El glifosato, flumioxazin y glifosato mas flumioxazin (2 : 1 , w/w) fueron post aplicados en maceteros a cuatro especies de malezas a una serie de dosis que oscilaron entre ningiin efecto hasta la muerte total. Los análisis de regresión revelaron que la informatión de control de las tres series de tratamientos podría describirse mediante el modelo log-logistico de 4 parámetros. Con respecto al glifosato y flumioxazin aplicados individualmente, el analisis reveló que para las cuatro especies se requirio una dosis más baja de flumioxazin para obtener un control del 90% en comparación con el glifosato. La dosis de la mezcla requerida para el 90% de control, fue generalmente intermedia a los componentes aplicados individualmente y osciló de 0.36 kg ha⁻¹ para Cardamine hirsuta L. CARHI a 1.52 kg ha⁻¹ para Eclipta prostrata L. ECLAL. El glifosato sin mezclar, fue más efectivo en cuanto a costos que el flumioxazin aplicado individualmente o la mezcla de glifosato-flumioxazin en el control postaplicado para las cuatro especies. La popularidad de la mezcla puede ser el resultado de la actividad pre del flumioxazin, que no fue medida en este estudio.

Page Thumbnails

  • Thumbnail: Page 
356
    356
  • Thumbnail: Page 
357
    357
  • Thumbnail: Page 
358
    358
  • Thumbnail: Page 
359
    359
  • Thumbnail: Page 
360
    360