Abstract
Abstract Three-year-old-field grown hemlocks (Tsuga canadensis) and 3-year-old Rhododendron ‘Nova Zembla’ were observed for foliar injury after applications of insecticides in a commercial nursery. The treated plants were located in Bloomfield, CT growing in a sandy loam with a pH of 5.7 at treatment time. Insecticides were applied on 30 Jul or 31 Aug, or on both dates. Each plot consisted of 3 plants in a row with 2 plants between plots, and plots were separated by a single buffer row. Treatments were replicated 3 times in a randomized block. Insecticides were applied individually to each plant; the liquid formulations were mixed with 8 oz of water to facilitate disbursal of the chemical, and the granules were scattered at the drip line of each plant and then washed into the soil with 8 oz of water.
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