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Windrow Burning Eliminates Italian Ryegrass (Lolium perenne ssp. multiflorum) Seed Viability

Published online by Cambridge University Press:  20 January 2017

Drew J. Lyon*
Affiliation:
Department of Crop and Soil Sciences, P.O. Box 646420, Washington State University, Pullman, WA 99164
David R. Huggins
Affiliation:
Northwest Sustainable Agroecosystems Research Unit, USDA-ARS, Pullman, WA 99164
John F. Spring
Affiliation:
Department of Crop and Soil Sciences, P.O. Box 646420, Washington State University, Pullman, WA 99164
*
Corresponding author's E-mail: drew.lyon@wsu.edu.

Abstract

Windrow burning is one of several harvest weed seed control strategies that have been developed and evaluated in Australia to address the widespread evolution of multiple herbicide resistance in annual weeds. Herbicide-resistant Italian ryegrass populations are common in the Palouse region of eastern Washington and northern Idaho. Field and greenhouse studies were conducted to evaluate the effects of burning standing stubble and narrow windrows on the survival of Italian ryegrass seed on the soil surface and to determine the amount of crop residue remaining after both practices. Italian ryegrass emergence was 63, 48, and 1% for the nonburned check, burned standing stubble, and burned windrow treatments, respectively. Crop-residue dry weights were 9.94, 5.69, and 5.79 Mg ha−1 for these same treatments. Windrow burning can be an effective tactic in an integrated weed management strategy for Italian ryegrass control in the Palouse region of eastern Washington and northern Idaho.

La quema de residuos de cultivo apilados en bandas es una de las estrategias de control de semillas de malezas durante la cosecha que han sido desarrolladas y evaluadas en Australia para enfrentar la ampliamente distribuida evolución de resistencia múltiple a herbicidas en malezas anuales. Poblaciones de Lolium perenne ssp. multiflorum resistentes a herbicidas son comunes en la región Palouse en el este de Washington y en el norte de Idaho. Se realizaron estudios de campo y de invernadero para evaluar los efectos de la quema de los residuos en pie del cultivo después de la cosecha y de la quema de los residuos de cultivos apilados en bandas, sobre la sobrevivencia de la semilla de L. perenne en la superficie del suelo, y para determinar la cantidad de residuo de cultivo que queda después de ambas prácticas. La emergencia de L. perenne fue 63, 48, y 1% para el testigo sin quema, la quema de los residuos en pie del cultivo, y la quema de los residuos en bandas, respectivamente. La quema de residuos de cultivos apilados en bandas puede ser una táctica efectiva dentro de una estrategia de manejo integrado de malezas para el control de L. perenne en la región Palouse en el este de Washington y en el norte de Idaho.

Type
Research Article
Copyright
Copyright © Weed Science Society of America 

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Footnotes

Associate Editor for this paper: Robert Nurse, Agriculture and Agri-Food Canada.

References

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