Soil Insecticide Applications Using the Smartbox Metering Unit for Control of Corn Rootworm Larvae in South Dakota, 1994
1995; Oxford University Press; Volume: 20; Issue: 1 Linguagem: Inglês
10.1093/amt/20.1.164
ISSN2156-2385
AutoresB. W. Fuller, M. A. Boetel, Jeffrey M. Jenson, Daniel J. Thompson,
Tópico(s)Wheat and Barley Genetics and Pathology
ResumoAbstract Cornfields located near Aurora and Cavour in central and east-central SD, respectively, were chosen for this study. The experiment was conducted to compare the efficacy of insecticide applications using modified ground-driven Noble metering units with the electronic Smartbox metering unit on a specially-adapted Kinze 4-row corn planter using band or in-furrow insecticide placement methods for control of northern and western corn rootworm larvae. Treatment plots (15.25 m long rows spaced 96.5 cm apart) were arranged in a RCBD with 4 replications. Noble and Smartbox metering units were calibrated on the planter prior to insecticide applications. Banded treatments were applied in an 18-cm swath in front of the furrow-closing wheels, and incorporated by the wheels and drag chains. In-furrow applications consisted of directing granules immediately between double-disk furrow openers. Pioneer IR-3751 (100-day) corn seed was planted at approximately 23,000 kernels per acre at each location. Five roots per replicate were dug, washed, examined for feeding damage and rated using the Iowa 1 to 6 scale. Data were analyzed with SAS’s General Linear Models procedure and means were compared using DMRT.
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