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Effect of Haloxyfop on Quackgrass (Elytrigia repens) and Potatoes (Solanum tuberosum)

Published online by Cambridge University Press:  12 June 2017

Jerry A. Ivany
Jerry A. Ivany*
Affiliation:
Agric. Canada, Charlottetown, Prince Edward Island, Canada, C1A 7M8
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Abstract

Reduction of initial top growth of quackgrass with haloxyfop at 0.13 kg ai ha-1 and above in the greenhouse was comparable at the 2-, 4-, and 6-leaf stages. Quackgrass control was not affected by rhizome length in plants grown from 2-node and 10-node rhizome pieces. Removal of quackgrass shoots 6 h after treatment resulted in increased initial topgrowth, regrowth, and rhizome weight at all application rates when compared to treatments with no removal of shoots; however, growth decreased with increasing rates of haloxyfop. Later removal at 24 or 96 h after treatment did not affect quackgrass control, indicating rapid translocation. In field-grown potato, haloxyfop applied at 0.25 kg ha-1 at the 4- to 5-leaf stage controlled more than 80% of quackgrass. Lower rates controlled less than 80% when used alone; but adding cultivation improved control. No adverse effect on potato yield was noted with haloxyfop.

Keywords

Haloxyfop, 2-[4-[[3-chloro-5-(trifluoromethyl)-2-pyridinyl]oxy]phenoxy]propanoic acidpotato, Solanum tuberosum L. ‘Russet Burbank’quackgrass, Elytrigia repens (L.) Nevski. ♯ AGRREPetroleum oilleaf stagerhizome lengthshoot removalcultivation
Type
Research
Information
Weed Technology , Volume 5 , Issue 1 , March 1991 , pp. 72 - 75
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

Literature Cited

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