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Effect of Herbicides on Germination and Growth of Four Grass Weeds

Published online by Cambridge University Press:  12 June 2017

Frank L. Young ,
David R. Gealy  and
Larry A. Morrow
Frank L. Young
Affiliation:
U.S. Dep. Agric.–Agric. Res. Serv., 215 Johnson Hall, Washington State Univ., Pullman, WA 99164
David R. Gealy
Affiliation:
U.S. Dep. Agric.–Agric. Res. Serv., 215 Johnson Hall, Washington State Univ., Pullman, WA 99164
Larry A. Morrow
Affiliation:
U.S. Dep. Agric.–Agric. Res. Serv., 215 Johnson Hall, Washington State Univ., Pullman, WA 99164
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Abstract

In the greenhouse, glyphosate [N-(phosphonomethyl)glycine] at 0.6 kg ae/ha applied directly to seeds alone or seeds on the soil surface reduced germination and shoot dry weight of common rye (Secale cereale L. ♯3 SECCE). Paraquat (1,1′-dimethyl-4,4′-bipyridinium ion) applied similarly at 0.6 kg ai/ha reduced germination and shoot dry weight of downy brome (Bromus tectorum L. ♯ BROTE) and wheat (Triticum aestivum L. ‘Daws' ♯ TRZAX). Metribuzin [4-amino-6-tert-butyl-3-(methylthio)-as-triazin-5 (4H)-one] at 0.6 kg ai/ha applied to seeds, soil, or seeds and soil had very little effect on germination, but significantly reduced shoot dry weight of common rye, downy brome, wheat, and jointed goatgrass (Aegilops cylindrica Host. ♯ AEGCY). Pronamide [3,5-dichloro(N-1,1-dimethyl-2-propynyl)benzamide] at 0.6 kg ai/ha, and propham (isopropyl carbanilate) at 3.4 kg ai/ha plus extender (p-chlorophenyl-N-methylcarbamate) at 0.4 kg ai/ha substantially reduced shoot height and dry weight of all species, regardless of application method, with pronamide completely inhibiting shoot elongation and dry-weight production in three of the four species.

Keywords

Bromus tectorumAegilops cylindricaSecale cerealeTriticum aestivumconservation tillageglyphosatemetribuzinparaquatprophampronamideAEGCYBROTESECCETRZAX
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 32 , Issue 4 , July 1984 , pp. 489 - 493
Copyright
Copyright © 1984 by the Weed Science Society of America 

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References

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