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Evaluation of Imazosulfuron for Yellow Nutsedge (Cyperus esculentus) and Broadleaf Weed Control in Potato

Published online by Cambridge University Press:  20 January 2017

Joel Felix  and
Rick A. Boydston
Joel Felix*
Affiliation:
Oregon State University/Malheur Experiment Station, Ontario, OR 97914
Rick A. Boydston
Affiliation:
Agricultural Research Service, United States Department of Agriculture, Irrigated Agriculture Research and Extension Center, Prosser, WA 99350-9687
*
Corresponding author's E-mail: joel.felix@oregonstate.edu.
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Abstract

Field studies were conducted in 2007 and 2008 near Nyssa, OR, and Pasco and Paterson, WA to evaluate yellow nutsedge and broadleaf weed control and potato tolerance to imazosulfuron. No injury symptoms from imazosulfuron were evident on potato at Nyssa, whereas in Washington, imazosulfuron caused some chlorosis of potato foliage ranging from 6 to 15% and < 4% at 6 and 15 d after POST application, respectively. Sequential applications of imazosulfuron controlled yellow nutsedge better than a single PRE application. Sequential applications of imazosulfuron or imazosulfuron in combination with s-metolachlor controlled yellow nutsedge > 92 and 89% at 21 and 42 d after POST applications, respectively. Imazosulfuron controlled ≥ 98% of common lambsquarters and 100% of pigweed species. Imazosulfuron provided season-long control of common mallow at Nyssa. However, imazosulfuron failed to control Russian thistle at Paterson, and only partially controlled hairy nightshade. Yield of U.S. no. 1 potato at Nyssa ranged from 44 to 54 T ha−1 and 42 to 52 T ha−1 for imazosulfuron PRE and imazosulfuron sequential treatments in 2007 and 2008, respectively. U.S. no. 1 potato yield following imazosulfuron PRE and sequential treatments at Pasco ranged from 49 to 57 T ha−1 in 2007, and at Paterson from 36 to 54 T ha−1 in 2008. Lower yields in 2008 were attributed to poor control of hairy nightshade. Imazosulfuron has potential to become a valuable tool for yellow nutsedge management in potato. Studies are needed to evaluate the soil persistence for imazosulfuron in order to determine safety to crops grown in rotation with potato.

Se llevaron al cabo estudios de campo en 2007 y 2008 cerca de Nyssa, OR y Pasco y Paterson, WA para evaluar el control de la Cyperus esculentus L. CYPES y malezas de hoja ancha y la tolerancia de la papa (Solanum tuberosum L) al imazosulfuron. La papa (Solanum tuberosum L.) no presentó daños debido al imazosulfuron mientras que en Washington, causó algo de clorosis en el follaje con variaciones que iban del 6 al 15% y de < 4% a los 6 y 15 días después de la POST aplicación, respectivamente. Las aplicaciones secuenciales de imazosulfuron controlaron la Cyperus esculentus L. CYPES mejor que una sola PRE aplicación. Las aplicaciones secuenciales de imazosulfuron individualmente o en combinación con S-metacloro controlaron la Cyperus esculentus L. CYPES en un > 92 y 89% a los 21 y 42 días después de las POST aplicaciones, respectivamente. El imazosulfuron controló en ≥ 98% la Chenopodium album L y en un 100% las especies de Amaranthus spp. El imazosulfuron proporcionó un control de la Malva neglecta Wallr a lo largo de la estación en Nyssa. Sin embargo, el imazosulfuron falló en el control de la Salsola tragus L en Paterson, y sólo controló parcialmente la Solanum physalifolium Rusby. En Niza el rendimiento de la variedad de papa más común en EE UU, varió de 44 a 54 T ha−1 y de 42 a 52 T ha−1 donde se utilizaron tratamientos PRE aplicados y secuenciales de imazosulfuron en 2007 y 2008, respectivamente. El rendimiento de la variedad de papa más común en EE UU al utilizar tratamientos PRE aplicados y secuenciales de imazosulfuron y tratamientos en Pasco promediaron de 49 y 57 T ha−1 en 2007 y en Paterson de 36 a 54 T ha−1 en 2008. Los rendimientos más bajos en 2008 se atribuyeron al deficiente control de la Solanum physalifolium Rusby. El imazosulfuron tiene potencial para ser una herramienta valiosa en el manejo de la Cyperus esculentus L. en el cultivo de la papa. Estudios futuros son necesarios para evaluar la persistencia en el suelo del imazosulfuron y poder establecer parámetros de seguridad en los cultivos sembrados en rotación con la papa.

Keywords

Imazosulfuronrimsulfurons-metolachlorcommon lambsquarters, Chenopodium album L.common mallow, Malva neglecta Wallrhairy nightshade, Solanum physalifolium Rusbypigweed, Amaranthus sppRussian thistle Salsola tragus L.yellow nutsedge, Cyperus esculentus L. CYPESpotato, Solanum tuberosum L. ‘Russet Burbank’ and ‘Shepody’herbicide injurypotato injuryyellow nutsedge control
Type
Weed Management—Other Crops/Areas
Information
Weed Technology , Volume 24 , Issue 4 , December 2010 , pp. 471 - 477
Copyright
Copyright © Weed Science Society of America 

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