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Wheat and Wild Oat Response to Flufenprop-methyl

Published online by Cambridge University Press:  12 June 2017

Wayne A. Olson  and
John D. Nalewaja
Wayne A. Olson
Affiliation:
Dep. of Agron., North Dakota State Univ., Fargo, ND, 58102
John D. Nalewaja
Affiliation:
Dep. of Agron., North Dakota State Univ., Fargo, ND, 58102
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Abstract

The tolerance of wheat (Triticum aestivum L. ‘Waldron’) and wild oat (Avena fatua L.) to various rates of flufenprop-methyl {methyl-2-[benzoyl(3-chloro-4-fluorophenyl)amino]propanoate} applied weekly after wheat and wild oat emergence was determined under field conditions. Wild oat control increased at all growth stages as flufenprop-methyl rate increased. Wild oat control was greater than 80% with flufenprop-methyl at all rates when applied up to 6 weeks after wild oat emergence: (anthesis stage), but decreased when application was delayed further. Wheat was most susceptible to flufenprop-methyl during anthesis. Flufenprop-methyl at 0.56 kg/ha injured weed-free wheat only at the boot and anthesis stages. Injury intensity and the number of weeks that injury remained evident increased as flufenprop-methyl rate increased. Flufenprop-methyl injury to wheat was expressed as reduced plant height, grain yield, and kernels per spike and increased grain protein. Plant height reductions were attributed to reduced cell elongation. Grain yield reductions resulted from reduced kernels per spike.

Type
Research Article
Information
Weed Science , Volume 25 , Issue 4 , July 1977 , pp. 355 - 359
Copyright
Copyright © 1977 by the Weed Science Society of America 

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