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Georgia-06G, Florida-07, and Tifguard Peanut Cultivar Response to Chlorimuron

Published online by Cambridge University Press:  20 January 2017

Eric P. Prostko ,
Robert C. Kemerait  and
Theodore M. Webster
Eric P. Prostko*
Affiliation:
Department of Crop & Soil Sciences, The University of Georgia, Tifton, GA 31973
Robert C. Kemerait
Affiliation:
Department of Plant Pathology, The University of Georgia, Tifton, GA 31793
Theodore M. Webster
Affiliation:
U.S. Department of Agriculture–Agricultural Research Service, Tifton, GA 31793
*
Corresponding author's E-mail: eprostko@uga.edu
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Abstract

Recent shifts in the peanut cultivars commercially grown have led to a renewed interest in the tolerance of these new cultivars to herbicides. Field experiments were conducted in Georgia from 2008 to 2011 to evaluate the effects of chlorimuron on the incidence of tomato spotted wilt virus (TSWV) and yield of ‘Florida-07’, ‘Georgia-06G’, and ‘Tifguard’. Chlorimuron at 9 g ai ha−1 was applied at 60 to 69, 70 to 79, 90 to 99, and 100 to 109 d after peanut emergence (DAE). TSWV was increased by only 3% when chlorimuron was applied to Tifguard at 60 to 69 DAE. Yields of Florida-07 were not influenced by any timing of chlorimuron. Chlorimuron applied 60 to 69, 70 to 79, and 90 to 99 DAE caused yield reductions when applied to Georgia-06G. Yields of the cultivar Tifguard were reduced when chlorimuron was applied 70 to 79, 90 to 99, and 100 to 109 DAE. Yield losses from chlorimuron ranged from 7 to 11%.

Recientes cambios en los cultivares de maní para uso comercial han renovado el interés en la tolerancia de estos nuevos cultivares a herbicidas. De 2008 a 2011 se realizaron experimentos de campo en Georgia para evaluar los efectos de chlorimuron sobre la incidencia del virus del moteado del tomate (TSWV) y en el rendimiento de ‘Florida-07’, ‘Georgia-06G’, y ‘Tifguard’. Chlorimuron a 9 g ia ha −1 fue aplicado de 60 a 69, 70 a 79, 90 a 99, y 100 a 109 días después de la emergencia del maní (DAE). TSWV se incrementó solamente un 3% cuando se aplicó chlorimuron a Tifguard de 60 a 69 DAE. Los rendimientos de Florida-07 no fueron influenciados por ningún momento de aplicación de chlorimuron. Chlorimuron aplicado de 60 a 69, de 70 a 79, y de 90 a 99 DAE causó reducciones en el rendimiento cuando se aplicó a Georgia-06G. Los rendimientos del cultivar Tifguard se redujeron cuando chlorimuron se aplicó de 70 a 79, 90 a 99, y 100 a 109 DAE. Las pérdidas en el rendimiento debido a chlorimuron variaron de 7 a 11%.

Keywords

Chlorimuronpeanut, Arachis hypogaea L.Crop injurytomato spotted wilt virus
Type
Weed Management—Major Crops
Information
Weed Technology , Volume 26 , Issue 3 , September 2012 , pp. 429 - 431
Copyright
Copyright © Weed Science Society of America 

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