Abstract
Abstract Nine soil insecticides were applied at the fully labeled rate at planting time and 2 reduced rates at first cultivation time at Concord, NE. The test plot was planted 8 May in a continuous corn field with a silty clay loam type. The experimental design was a randomized complete block with 4 replicates. Each treatment consisted of a single 50-ft-long row; rows were 30 inches apart. Treatments were applied in a 7-inch band by a Noble granular metering unit mounted on a hand-powered bicycle applicator equipped with incorporation tines on 12 May. Cultivation treatments were applied 5 Jun over the row followed immediately by a tractor mounted cultivator. Feeding damage was evaluated 6 Jul. Five roots were dug from each treatment row and rated by the Iowa 1-6 scale (1, no damage; 6, 3 or more nodes of roots completely destroyed).
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