Abstract
Abstract The granular preemergent herbicides Snapshot TG (isoxaben + trifluralin) and Stakeout (dithiopyr) wre evaluated as an alternative to Snapshot DF (isoxaben + oryzalin) for control of spotted spurge (Chamaesyce maculata [formerly Euphorbia maculata]) in container-grown daylily (Hemerocallis × ‘Aztec Gold’). Stakeout (dithiopyr) at 1.1, 1.7, or 2.2 kg ai/ha (1.0, 1.5, 2.0 lb ai/A) and Snapshot TG (isoxaben + tritluralin) at 5.6 kg ai/ha (5.0 lb ai/A) were as effective as Rout (oxyfluorfen + oryzalin) at 3.4 kg ai/ha (3.0 lb ai/A), Snapshot (DF (isoxaben + oryzalin) at 4.5 kg ai/ha (4.0 lb ai/A), or Gallery (isoxaben) at 1.1 kg ai/ha (1.0 lb ai/A) in controlling spotted spurge. Rout (oxyfluorfen + oryzalin) and Ronstar G (oxadiazon) caused significant injury (bleached spots that became necrotic) while the other herbicides caused little to no damage.
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