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Weed Control During Establishment and Yield Response of Timothy (Phleum pratense)

Published online by Cambridge University Press:  12 June 2017

Najib Malik
Najib Malik*
Affiliation:
Agric. Canada Res. Stn., Melfort, Saskatchewan SOE 1AO
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Abstract

The effects of 14 herbicide treatments, tested in the establishment phase, were investigated on timothy productivity in two field experiments conducted at Melfort, Saskatchewan. Satisfactory weed control achieved with chlorsulfuron, metsulfuron, thifensulfuron, bentazon, diclofop plus bromoxynil, and MCPA/mecoprop/dicamba during the establishment year ensured good forage establishment which in turn caused a ‘residual effect’ for 1 to 3 yr increasing individual cut as well as cumulative forage dry matter yields significantly. In the stand established in 1985, when field pennycress (97 m-2) was the dominant weed in the seedling stage, these treatments increased yields 29 to 52% over a 3-yr period. In the stand established in 1986, when common lambsquarters (27 m-2) was the dominant weed, these treatments increased cumulative yields 24 to 44%. Sethoxydim and fenoxaprop, tested alone, caused significant crop injury in both experiments.

Keywords

bromoxynil, 3,5-dibromo-4-hydroxybenzonitriledicamba, 3,6-dichloro-2-methoxybenzoic aciddiclofop,(±)-2-[4-(2,4-dichlorophenoxy)phenoxy]propanoic acidfenoxaprop, (±)-2-[4-[(6-chloro-2-benzoxazolyl)oxy]phenoxy]propanoic acidMCPA, (4-chloro-2-methylphenoxy)acetic acidmecoprop, (±)-2-(4-chloro-2-methylphenoxy)propanoic acid2,4-D, (2,4-dichlorphenoxy)acetic acidtimothy, Phleum pratense L. ♯3 PHLPRcommon lambsquarters, Chenopodium album L. ♯ CHEALfield pennycress, Thlaspi arvense L. ♯ THLARCrop toleranceforage dry matterbentazonbromoxynilchlorsulfurondicambadiclofopfenoxapropMCPAmecopropmetsulfuronsethoxydimthifensulfuronChenopodium albumThlaspi arvensePhleum pratenseCHEALTHLAR
Type
Research
Information
Weed Technology , Volume 4 , Issue 3 , September 1990 , pp. 598 - 605
Copyright
Copyright © 1990 Weed Science Society of America 

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References

Literature Cited

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