Effects of Spinosad and Acephate on Western Flower Thrips Inside and Outside a Greenhouse

• DOI: 10.21273/horttech.10.2.359
• Publication Date: 2018-12-14T14:52:00Z
• Authors: Raymond A. Cloyd; Clifford S. Sadof
• Keywords: Western flower thrips; Acephate; Gerbera jamesonii

Greenhouse studies were conducted from 1996 to 1998 determine the efficacy of spinosad, and acephate, against western flower thrips ( Frankliniella occidentalis Pergande) on transvaal daisy Gerbera jamesonii H. Bolus ex. Hook f). In addition, number natural enemies inside outside greenhouse was determined. Studies arranged in a randomized complete-block design with four blocks treatments per block. Three rates 50, 100, 200 mg·L -1 (ppm), one rate 600 used all three studies. Plants artificially inoculated at bloom 10 adult thrips. The live dead counted each plant. studies, both spinosad acephate controlled However, there more variation average for than across years. fewer found plants greenhouse. This suggests that placing outdoors allows colonize provide supplemental control.