Abstract
Abstract Studies were conducted in 1994 and 1995 at Headland, AL, Gainesville, FL, and Tifton, GA to quantify peanut injury by ethalfluralin applied preplant incorporated (PPI) or preemergence (PRE) at 0.0, 0.6, 1.1, 2.2, and 4.5 kg ai/ha. Parameters most sensitive to ethalfluralin injury were pod biomass and yield, while time of emergence, stand, canopy width, and foliar biomass were less sensitive. Ethalfluralin was generally more injurious when applied PPI than PRE, especially when rates were ≥ 2.2 kg/ha. At these rates, pod formation was inhibited and yields were reduced with little corresponding effect on vegetative growth. These data show ethalfluralin can be safely applied either PPI or PRE to peanut at rates ≤ 1.1 kg/ha.
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