Abstract
Abstract The golf course rough consisted primarily of Kentucky bluegrass (35%), annual bluegrass (30%), perennial ryegrass (25%), and crabgrass (10%), maintained at 4.5 to 6.0 cm. Treatment plots were 2.6 x 2.6 m, replicated 4 times, arranged in a RCB design. All applications were made 26 Aug. Liquid formulations were applied by hand with watering cans, 3 liters water per plot. Granular formulations were applied using glass jars with perforated lids. Conditions at the time of application were as follows: air temperature, 28°C; hazy, humid; soil type, silty loam; water pH 6.6. All plots were irrigated 0.7 cm 1.5 h after application. Product efficacy was evaluated 9 Oct (40 DAT) by cutting two 0.1 m2 samples out of each plot, dislodging soil with a hand trowel, and counting all grubs to a depth of 10 cm.
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