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Control of Several Perennial Weeds in Creeping Red Fescue (Festuca rubra) Grown for Seed

Published online by Cambridge University Press:  12 June 2017

A. Lloyd Darwent  and
Leonard P. Lefkovitch
A. Lloyd Darwent
Affiliation:
Agric. and Agri-Food Can., North. Agric. Res. Cent., Beaverlodge, AB T0H 0C0
Leonard P. Lefkovitch
Affiliation:
Agric. and Agri-Food Can., Bldg. 54, Central Exp. Farm, Ottawa, ON K1A 0C6
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Abstract

In commercial fields of creeping red fescue, spring applications of sethoxydim at 500 g/ha and fluazifop-P at 250 g/ha consistently reduced the heading, and consequently the seed production, of foxtail barley and volunteer bromegrass by ≥90% without affecting crop seed yield, 100-seed wt or germination. The effectiveness of sethoxydim at 500 g/ha and fluazifop-P at 250 g/ha to reduce heading of grass weeds was not affected by tank mixing with metsulfuron at 4.5 g/ha but was reduced when tank mixed with either dicamba plus 2,4-D at 280 plus 560 g/ha or 2,4-D alone at 560 g/ha. Metsulfuron alone, or in tank mixtures with sethoxydim (500 g/ha) or fluazifop-P (250 g/ha), effectively controlled dandelion and volunteer alsike clover (probability of ≥80% control was 0.94 or more). Dicamba plus 2,4-D provided a similar level of volunteer alsike clover control but was less effective on dandelion, while 2,4-D was ineffective on both weeds. Treatments containing dicamba plus 2,4-D reduced crop seed yield and germination, and increased seed weight.

Keywords

2,4-D, (2,4-dichlorophenoxy)acetic aciddicamba, 3,6-dichloro-2-methoxybenzoic acidfluazifop-P, (R)-2-[4-[[5-(trifluoromethyl)-2-pyridinyl]oxy]phenoxy]propanoic acidmetsulfuron, 2-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]amino]sulfonyl]benzoic acidsethoxydim, 2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-onecreeping red fescue, Festuca rubra ssp. rubra L.dandelion, Taraxacum officinale Weber in Wiggers # TAROFfoxtail barley, Hordium jubatum L. # HORJUvolunteer alsike clover, Trifolium hybridum L. # TRFHYvolunteer bromegrass, Bromus inermis Leyss. # BROINDicambafluazifop-Pmetsulfuronsethoxydim2,4-DHORJUBROINTAROFTRFHY
Type
Research
Information
Weed Technology , Volume 9 , Issue 2 , June 1995 , pp. 294 - 300
Copyright
Copyright © 1995 by the Weed Science Society of America 

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References

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