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Tolerance of Spring Triticale (× Triticosecale Wittmack) to Four Wheat Herbicides

Published online by Cambridge University Press:  20 January 2017

Lisa Raatz ,
Melissa Hills ,
Ross Mckenzie ,
Rong-Cai Yang ,
Keith Topinka  and
Linda Hall
Lisa Raatz
Affiliation:
Department of Agricultural, Food and Nutritional Sciences, University of Alberta, 410 Ag/For Building, Edmonton, AB T6G 2P5
Melissa Hills
Affiliation:
Grant MacEwan University, Rm. 5-256D, 10700-104 Avenue, Edmonton, AB T5J 4S2
Ross Mckenzie
Affiliation:
Alberta Agriculture and Rural Development, A252 Agriculture Centre, 100 5401-1 Avenue S., Lethbridge, AB T1J 4V6
Rong-Cai Yang
Affiliation:
Alberta Agriculture and Rural Development, 307 J.G. O'Donoghue Building 7000-113 Street, Edmonton, AB T6H 5T6, Canada
Keith Topinka
Affiliation:
Department of Agricultural, Food and Nutritional Sciences, University of Alberta, 410 Ag/For Building, Edmonton, AB T6G 2P5
Linda Hall*
Affiliation:
Department of Agricultural, Food and Nutritional Sciences, University of Alberta, 410 Ag/For Building, Edmonton, AB T6G 2P5
*
Corresponding author's E-mail: linda.hall@ales.ualberta.ca
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Abstract

Triticale is a low input crop, produced in North America primarily for silage for animal feed. Currently, seed growers have few herbicide options for producing certified seed. There is anecdotal evidence that triticale tolerates many of the same herbicides as wheat. In 2004 and 2005, the tolerance of three spring triticale varieties (AC Alta, AC Ultima, and Pronghorn) was tested with four herbicides registered for wheat: florasulam + MCPA ester, clodinafop-propargyl, thifensulfuron-methyl/tribenuron-methyl, and sulfosulfuron-methyl + 2,4-D ester. Herbicides were applied at the label rate (1×) for wheat and twice (2×) that rate. Crop injury, plant height, biomass, and seed yields were quantified. Neither florasulam + MCPA ester, clodinafop-propargyl, nor thifensulfuron-methyl/tribenuron-methyl at 1× or 2× use rates significantly injured triticale. Sulfosulfuron-methyl + 2,4-D ester reduced triticale height at the 1× and 2× rates, as well as reduced biomass and yield at the 2× rate. Florasulam + MCPA ester, clodinafop-propargyl, and thifensulfuron-methyl/tribenuron-methyl do not cause significant crop injury and can be used for weed control in spring triticale, but sulfosulfuron-methyl + 2,4-D ester is not recommended for use in triticale.

El triticale (X Triticosecale Wittmack) es un cultivo que requiere pocos insumos, y que se utiliza en Norteamérica principalmente como ensilaje para consumo animal. Actualmente, los productores de semilla tienen pocas opciones de herbicidas que puedan utilizar en la producción de semilla certificada. Existe una evidencia anecdótica de que el triticale tolera muchos de los mismos herbicidas utilizados para el trigo. En 2004 y 2005, se examinó la tolerancia de tres variedades de triticale (AC Alta, AC Ultima y Pronghorn) a cuatro herbicidas recomendados para trigo: florasulam + MCPA éster, clodinafop propargil, tifensulfuron metil/tribenuron metil, y sulfosulfuron metil + 2, 4-D éster. Los herbicidas se aplicaron a la dosis indicada en la etiqueta para el trigo (1X) y al doble de la dosis (2X). Se cuantificaron el daño al cultivo, la altura de la planta, la biomasa y el rendimiento de la semilla. Ni florasulam + MCPA éster, ni clodinafop propargil, ni tifensulfuron metil/tribenuron metil a dosis 1X o 2X dañaron significativamente el triticale. El sulfosulfuron metil + 2, 4-D éster redujo la altura del triticale en la dosis 1X y 2X, así como también redujo la biomasa y el rendimiento en la dosis 2X. El florasulam + MCPA éster, clodinafop propargil, y tifensulfuron metil/tribenuron metil no causan daños significativos al cultivo y pueden ser usados para el control de maleza en triticale, pero el sulfosulfuron metil + 2, 4-D éster no es recomendado para su uso en el cultivo de triticale.

Keywords

Clodinafop-propargyl2,4-D esterflorasulamMCPA estersulfosulfuron-methylthifensulfuron-methyl/tribenuron-methyltriticale, ×Triticosecale Wittmack ‘AC Alta’, ‘AC Ultima’, ‘Pronghorn’wheat, Triticum sppCrop tolerancecrop injury
Type
Weed Management—Other Crops/Areas
Information
Weed Technology , Volume 25 , Issue 1 , March 2011 , pp. 84 - 89
Copyright
Copyright © Weed Science Society of America 

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