Abstract
Abstract Greenhouse-grown verbena, 6-8 inches high, planted in 4-inch pots, were artificially infested with twospotted spider mites. The plants were evenly spaced on a greenhouse bench. Treatments were replicated 4 times in a randomized complete block design. Plants were sprayed until runoff with a Gilmore all-purpose hand sprayer, and a surfactant (Triton B 1956 at 3Mi oz/100 gal) was added to each treatment. Applications were made on 30 May and 6 Jun. Spider mite infestations were evaluated at 3, 7, and 14 days after initial treatment. The 7 DAT counts were made just prior to the 2nd treatment. Infestations were determined by examining 4 leaves/plant and counting the number of live spider mites on the lower surface of the leaves.
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