Abstract
Abstract Sweet corn was planted on 15 Jul at the Snyder Research and Extension Farm, Pittstown, NJ. Treatment plots were replicated 4 times in a randomized complete block design and consisted of 4 rows, 50 ft long on 3 ft centers with 9 inches between plants. Buffers were 12 ft driveways, two additional rows between adjacent plots, and 5 ft between plots within rows. Standard cultural practices were used throughout the trial. Treatments were applied on 26 Aug with a tractor-mounted, boom sprayer equipped with a PTO-driven diaphragm pump, servicing dropped extensions with 4 hollow-cone nozzles per row directed at the interior area of the whorl. At the time of application, plants were approximately 2 feet high in the late whorl stage. Sprayer was calibrated to deliver 73.5 gal/acre at 60 psi. Plots were evaluated on 30 Aug by examining 25 plants harvested from the middle 40 ft of the middle 2 rows of each replicate. All larvae or larval damage in the whorl was identified and counted.
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