Abstract
Abstract Insecticides were applied to 5 single-tree plots of 2-yr-old trees in a randomized block design. Applications were made with a Century handgun sprayer operated at 200 psi and delivering approximately 3.8 liters of spray per tree. Dates of application were 1, 5, 9, 13, and 17 Jun, with Asana also applied on an 8-day interval (1, 9, and 17 Jun). Cicada knockdown was determined by counting the immobilized cicadas on the ground beneath each tree in the early morning of 2 Jun following the evening application on 1 Jun. Damage to trees was evaluated on 20 Jul, by counting the oviposition scars in a 40-cm section (previously marked with spray paint) on each of 3 branches per tree.
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