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Proso Millet Tolerance to Saflufenacil

  • Drew J. Lyon (a1) and Andrew R. Kniss (a2)

Proso millet is an important short-season summer cereal in western Nebraska, southeast Wyoming, and eastern Colorado. The objective of this study was to evaluate proso millet tolerance to saflufenacil applied early preplant (EPP) or PRE. Field studies were conducted in Lingle, WY and Sidney, NE in 2008 and 2009. A dose–response study was conducted in the greenhouse at the University of Wyoming in Laramie, WY to determine proso millet cultivar response to saflufenacil applied at six rates from 0 to 400 g ai ha−1. In the field, saflufenacil was applied EPP and PRE at 50 and 100 g ha−1. Proso millet stands were reduced by an average of 33 and 23% by PRE and EPP treatments compared with the nontreated check; however, proso seed yields were not affected by saflufenacil timing or rate. In the greenhouse, ‘Panhandle’ and ‘Dawn’ exhibited less tolerance to saflufenacil than ‘Sunrise’, the cultivar used in the field studies.

El panicum miliaceum L. es un cereal importante de corta duración en el verano en el oeste de Nebraska, suroeste de Wyoming y el este de Colorado. El objetivo de este estudio fue evaluar la tolerancia del panicum miliaceum L. al saflufenacil aplicado temprano en la pre-siembra (EPP) o PRE. Se llevaron al cabo estudios de campo en Lingle, WY y Sydney, NE en 2008 y 2009. Un estudio de respuesta a la dosis se llevo al cabo en el invernadero en la Universidad de Wyoming en Laramie, WY para determinar la respuesta de los cultivadores del panicum miliaceum L. al saflufenacil aplicado a seis dosis de 0 to 400 g ia/ha. En el campo, el saflufenacil fue aplicado EPP y PRE a 50 y 100 g/ha. Las plantas del panicum miliaceum L. se redujeron en un promedio de 33 y 23% por los tratamientos PRE y EPP en comparación con el testigo no tratado, sin embargo, los rendimientos de la semilla del panicum miliaceum L. no fueron afectados por el tiempo de aplicación o dosis de saflufenacil. Los invernaderos, ‘Panhandle’ y ‘Dawn’ mostraron menos tolerancia al saflufenacil que ‘Sunrise’, éstos cultivares se usaron en estos estudios de campo.

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Weed Technology
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