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Wheat Tolerance to AE F130060 00 plus AE F115008 00 as Affected by Time of Application and Rate of the Safener AE F107892

Published online by Cambridge University Press:  20 January 2017

H. Lane Crooks ,
Alan C. York  and
David L. Jordan
H. Lane Crooks
Affiliation:
Department of Crop Science, North Carolina State University, Raleigh, NC 27695-7620
Alan C. York*
Affiliation:
Department of Crop Science, North Carolina State University, Raleigh, NC 27695-7620
David L. Jordan
Affiliation:
Department of Crop Science, North Carolina State University, Raleigh, NC 27695-7620
*
Corresponding author's E-mail: [email protected]
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Abstract

Soft red winter wheat response to the herbicides AE F130060 00 plus AE F115008 00 applied alone or with the safener AE F107892 at the three-leaf, two-tiller, and six-tiller growth stages was determined in a field experiment in North Carolina. AE F130060 00 at 25 g ai/ha plus AE F115008 00 at 5 g ai/ha, twice the anticipated use rate, applied with safener injured wheat 9% but did not affect grain yield, grain test weight, number of spikes, number of kernels per spike, or kernel weight. Results were similar with safener at herbicide–safener ratios of 1:1 and 1:3 regardless of the wheat growth stage at application. Without the safener, AE F130060 00 plus AE F115008 00 applied at the three-leaf, two-tiller, and six-tiller growth stages injured wheat an average of 27% and reduced grain yields 5, 5, and 11%, respectively. Yield losses were attributed to reduced numbers of kernels per spike. AE F130060 00 at 12.5 g/ha plus AE F115008 00 at 2.5 g/ha plus AE F107892 at 15 g ai/ha did not affect grain yield or yield components.

Keywords

AE F107892 (proposed name, mefenpyr-diethyl), 1-(2,4-dichlorophenyl)-4,5-dihydro-5-methyl-1H-pyrazole-3,5-dicarboxylic acidAE F115008 00 (proposed name, iodosulfuron-methyl-sodium), 4-iodo-2-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]amino]sulfonyl]benzoic acid methyl esterAE F130060 00 (proposed name mesosulfuron-methyl), methyl 2-[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]-4-[[(methylsulfonyl)amino]methyl]benzoatewheat, Triticum aestivum L. ‘Coker 9704’Herbicide injurywheat yieldyield componentsFGS, feekes growth stagePOST, postemergenceWAT, weeks after treatment
Type
Note
Information
Weed Technology , Volume 18 , Issue 3 , September 2004 , pp. 841 - 845
Copyright
Copyright © Weed Science Society of America 

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