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Green Foxtail (Setaria viridis) Competition with Spring Wheat (Triticum aestivum)

Published online by Cambridge University Press:  12 June 2017

Dallas E. Peterson  and
John D. Nalewaja
Dallas E. Peterson
Affiliation:
Crop and Weed Sci. Dep., N. Dak. State Univ., Fargo, ND 58105
John D. Nalewaja
Affiliation:
Crop and Weed Sci. Dep., N. Dak. State Univ., Fargo, ND 58105
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Abstract

Yield reductions due to green foxtail competition with hard red spring wheat varied with environment in field experiments conducted in 1984, 1985, and 1986 at Oakes, Langdon, Prosper, and Fargo, North Dakota. Wheat yield reductions ranged from 0 to 47% from 720 green foxtail plants per m2. Inclusion of early season temperature and precipitation, soil texture, and foxtail density into multiple regression analysis of wheat yield reductions significantly increased the coefficient of determination to 0.62 compared with 0.12 for regression based on green foxtail density alone. Wheat yield reduction decreased as green foxtail seeding was delayed after wheat seeding in 1986. Wheat yield generally decreased as time of diclofop application was delayed from 2 to 6 wk after wheat emergence in 1986.

Keywords

Diclofop, (±)-2-[4-(2,4-dichlorophenoxy)phenoxy]propanoic acidgreen foxtail, Setaria viridis (L.) Beauv. ♯ SETVIwheat, Triticum aestivum L.Weed interferenceenvironment
Type
Research
Information
Weed Technology , Volume 6 , Issue 2 , June 1992 , pp. 291 - 296
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

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