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Postemergence Herbicide Suppression of Wheat, Triticum aestivum, Growing with Alfalfa, Medicago sativa

Published online by Cambridge University Press:  12 June 2017

Richard A. Beardmore  and
Dean L. Linscott
Richard A. Beardmore
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Cornell Univ., Ithaca, NY 14853
Dean L. Linscott
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Cornell Univ., Ithaca, NY 14853
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Abstract

Two field experiments were conducted in 1984 and 1985 to determine the effects of fluazifop, haloxyfop, and sethoxydim on the suppression of water uptake and competition of wheat to seedling alfalfa. In all cases, suppression of wheat growth and stand led to significant reduction in soil water use. The amounts of conserved soil water significantly correlated with increased numbers of alfalfa plants; the correlation coefficients, respectively, for mid- and late-summer plantings were 0.47 and 0.41 in 1984 and 0.90 and 0.86 in 1985. Conservation of soil water was attributed to growth reduction or cessation of wheat growth by the herbicides and, to some extent, suppression of wheat leaf transpiration. All of the three herbicides would be effective in controlling volunteer wheat in a new alfalfa planting.

Keywords

Fluazifop, (±)- 2 - [4- [[5 - (trifluoromethyl)-2-pyridinyl]oxy]phenoxy] propanoic acidhaloxyfop, 2-[4-[[3 - chloro - 5 - (trifluoromethyl) - 2 - pyridinyl] oxy] phenoxy] propanoic acidsethoxydim, 2 - [1 - (ethoxyimino)butyl] - 5 -[2- (ethylthio)propyl- 3 -hydroxy-2-cyclohexen-1-one2,4-DB, 4-(2,4-dichlorophenoxy)butyric acidalfalfa, Medicago sativa L. ‘Oneida’wheat, Triticum aestivum L. ‘Yorkstar’Fluazifophaloxyfopsethoxydimwater uptaketranspiration
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 36 , Issue 5 , September 1988 , pp. 636 - 641
Copyright
Copyright © 1988 by the Weed Science Society of America 

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References

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