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Management of Field Violet (Viola arvensis) in Strawberries (Fragaria × anassa)

Published online by Cambridge University Press:  12 June 2017

Douglas J. Doohan ,
Thomas J. Monaco  and
Thomas J. Sheets
Douglas J. Doohan
Affiliation:
Dep. Head, N.C. State Univ., Box 7609, Raleigh, NC 27695-76109
Thomas J. Monaco
Affiliation:
Dep. Hortic. Sci., N.C. State Univ., Box 7609, Raleigh, NC 27695-76109
Thomas J. Sheets
Affiliation:
Pestic. Residue Res. Lab., N.C. State Univ., Box 7609, Raleigh, NC 27695-76109
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Abstract

Herbicides were evaluated for control of field violet in strawberries in North Carolina and in Nova Scotia, Canada. DCPA at 11.0 kg ai ha−1 and terbacil at 0.5 kg ai ha−1 PRE controlled field violet 80 to 95%. Control with simazine PRE at 1.0 kg ai ha−1 was 70 to 75%. Oxyfluorfen at 0.6 to 1.1 kg ai ha−1 controlled 95 to 100% of the established field violet in dormant strawberries following a mid-winter application. Control with acifluorfen and lactofen applied during mid-winter was 75 to 90%. Oxyfluorfen applied to dormant plantings at rates in excess of 0.60 kg ai ha−1 caused foliar damage; however, yield was not reduced at rates up to 4.5 kg ha−1. Oxyfluorfen at 0.25 kg ha−1 caused severe injury to newly-transplanted strawberries.

Keywords

Acifluorfen, 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoic acidDCPA, dimethyl 2,3,5,6-tetrachloro-1,4-benzenedicarboxylatelactofen, (±)-2-ethoxy-1-methyl-2-oxoethyl 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoateoxyfluorfen, 2-chloro-1-(3-ethoxy-4-nitrophenoxy)-4-(trifluoromethyl)benzene: simazine, 6-chloro-N,N′-diethyl-1,3,5-triazine-2,4-diamineterbacil, 5-chloro-3-(1,1-dimethylethyl)-6-methyl-2,4(1H,3H)-pyrimidinedionefield violet, Viola arvensis Murr. # VIOARstrawberry, Fragaria x ananassa DuechesneWeed controlcrop toleranceVIOAR
Type
Research
Information
Weed Technology , Volume 7 , Issue 1 , March 1993 , pp. 185 - 189
Copyright
Copyright © 1993 by the Weed Science Society of America 

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References

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