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1 July 2004 Wheat Tolerance to AE F130060 00 plus AE F115008 00 as Affected by Time of Application and Rate of the Safener AE F107892
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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.

Nomenclature: AE F107892 (proposed name, mefenpyr-diethyl), 1-(2,4-dichlorophenyl)-4,5-dihydro-5-methyl-1H-pyrazole-3,5-dicarboxylic acid; AE 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 ester; AE F130060 00 (proposed name mesosulfuron-methyl), methyl 2-[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]-4-[[(methylsulfonyl)amino]methyl]benzoate; wheat, Triticum aestivum L. ‘Coker 9704’.

Additional index words: Herbicide injury, wheat yield, yield components.

Abbreviations: FGS, feekes growth stage; POST, postemergence; WAT, weeks after treatment.

H. LANE CROOKS, ALAN C. YORK, and DAVID L. JORDAN "Wheat Tolerance to AE F130060 00 plus AE F115008 00 as Affected by Time of Application and Rate of the Safener AE F107892," Weed Technology 18(3), 841-845, (1 July 2004). https://doi.org/10.1614/WT-03-122R1
Published: 1 July 2004
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