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Efficacy of Planting-Time Corn Rootworm Soil Insecticides Applied Using the Smartbox Metering Device in South Dakota, 1995

1996; Oxford University Press; Volume: 21; Issue: 1 Linguagem: Inglês

10.1093/amt/21.1.214

2156-2385

M. A. Boetel, B. W. Fuller,

Insect and Arachnid Ecology and Behavior

Abstract Five dryland field sites (Aurora, Cavour, Delmont, Garretson, and Lake Andes) in central and eastern SD were chosen to compare the efficacy of insecticides applied using the electronic Smartbox metering unit versus those delivered using ground-driven Noble units for managing rootworm larvae. Plots (15.2 m long rows spaced 96.5 cm apart) were arranged in a RCBD with four replications. Metering devices were mounted on a specially adapted Kinze 4-row corn planter, and calibrated on the planter before applications. Banded (B) treatments were placed in 18-cm swaths ahead of furrow-closing wheels, and incorporated by the wheels and drag chains. In-furrow (F) treatments were applied by directing granules between double-disk openers and into the open seed furrow. Five roots per plot were examined for feeding injury, and rated using the Iowa State 1 to 6 scale. Data were analyzed with SAS’s General Linear Models procedure and means were compared using DMRT.