Abstract
Abstract Rooted chrysanthemum cuttings were potted (1/pot, 6 inch dia) 3 wk prior to use. Plants were exposed to an infestation of aphids (Aphis gossypii) in the greenhouse. Four weeks post-exposure, pre-treatment counts of aphids were made. Plants were separated into 6 treatments and a control and isolated on a separate raised bench within the greenhouse. Treatments were applied to 4 plants/treatment by a hand sprayer at approximately 45-60 psi. Counts of live aphids were made 5, 10, and 15 DAT on both leaves and terminal (undifferentiated leaves) portions of the mums.
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