Management of field violet (Viola arvensis) in strawberries (Fragaria X anassa)

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-1and terbacil at 0.5 kg ai ha-1PRE controlled field violet 80 to 95%. Control with simazine PRE at 1.0 kg ai ha-1was 70 to 75%. Oxyfluorfen at 0.6 to 1.1 kg ai ha-1controlled 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-1caused foliar damage; however, yield was not reduced at rates up to 4.5 kg ha-1. Oxyfluorfen at 0.25 kg ha-1caused severe injury to newly-transplanted strawberries.