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Response of Seven Peanut (Arachis hypogaea) Cultivars to Sulfentrazone

Published online by Cambridge University Press:  20 January 2017

Timothy L. Grey ,
David C. Bridges  and
Barry J. Brecke
Timothy L. Grey*
Affiliation:
Department of Crop and Soil Sciences, University of Georgia, Georgia Experiment Station, 1109 Experiment Street, Griffin, GA 30223
David C. Bridges
Affiliation:
Department of Crop and Soil Sciences, University of Georgia, Georgia Experiment Station, 1109 Experiment Street, Griffin, GA 30223
Barry J. Brecke
Affiliation:
West Florida Research and Education Center, University of Florida, 4253 Experiment Drive, Jay, FL 32565
*
Corresponding author's E-mail: tgrey@gaes.griffin.peachnet.edu.
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Abstract

Field studies were conducted to evaluate the tolerance of peanut cultivars ‘Florunner’, ‘Georgia Green’, ‘Sunoleic 95R’, ‘AgriTech GK7’, ‘NC-7’, ‘ViruGard’, and ‘Spanco’ to sulfentraone. Herbicide treatments included sulfentrazone applied as a single treatment preemergence (PRE) at 0.14, 0.21, 0.28, 0.35, or 0.42 kg ai/ha or as a PRE followed by (fb) an at cracking (AC) application (0.14 kg ai/ha PRE fb 0.14 kg ai/ha AC, 0.21 kg ai/ha PRE fb 0.14 kg ai/ha AC, 0.21 kg ai/ha PRE fb 0.21 kg ai/ha AC, 0.28 kg ai/ha PRE fb 0.07 kg ai/ha AC, or 0.28 kg ai/ha PRE fb 0.14 kg ai/ha AC). Imazapic and paraquat applied early postemergence (EPOT) were included along with a weed-free control. NC-7 exhibited higher early-season injury (ranging from 1 to 29%) than other cultivars across all sulfentrazone applications. However, this injury did not affect yield when compared with the untreated weed-free check. Overall, peanut tolerance to sulfentrazone was high across all varieties.

Keywords

Imazapic, (±)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-methyl-3-pyridinecarboxylic acid)paraquat-dichloride, 1,1′-dimethyl-4,4′-bipyridinium dichloridesulfentrazone, N-[2,4-dichloro-5-[4-(difluoromethyl)]-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl]phenyl]methanesulfonamidepeanut, Arachis hypogaea L., ‘AgriTech GK7’, ‘Florunner’, ‘Georgia Green’, ‘NC-7’, ‘Sunoleic 95R’, ‘Spanco’, ‘ViruGard’Peanut injurypeanut cultivarpeanut yieldherbicide susceptibilityAC, at crackingALS, acetolactate synthaseEPOT, early postemergencefb, followed byPOST, postemergencePPI, preplant incorporatedPRE, preemergence
Type
Research
Information
Weed Technology , Volume 14 , Issue 1 , March 2000 , pp. 51 - 56
Copyright
Copyright © Weed Science Society of America 

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