Evaluation of Selected Herbicides on Field-Grown Woody Ornamentals

Abstract

Six herbicides and selected combinations were evaluated on four field-grown woody landscape crops: live oak, ‘Mary Nell’ holly, ‘Chesapeake’ viburnum, and ‘Acoma’ crapemyrtle. All herbicide treatments provided excellent control of goosegrass ( Eleusine indica (L.) Gaertn.). Treatments with Predict (norflurazon) provided adequate sicklepod ( Cassia obtusifolia L.) control. Only Goal (oxyfluorfen)-containing treatments controlled cutleaf eveningprimrose ( Oenothera laciniata Hill). Predict and Predict treatment-combinations bleached older foliage of crapemyrtle and viburnum when applied in the first year after planting; however, growth was not affected. Holly was not injured by any herbicide treatments. Pendulum (pendamethalin) and Surflan (oryzalin) had similar weed control activity and plant growth with no plant injury