Abstract
ABSTRACT Scirtothrips dorsalis Hood is a pest of strawberry in Florida, causing foliar and fruit damage to young plants. A field-plot study was conducted in 2015–16 to compare the efficacy of flupyradifurone (SivantoTM 200 SL, 1035 and 2070 ml ha−1) to spinetoram (Radiant SC®, 740 ml ha−1). Flupyradifurone reduced S. dorsalis by 68-83% on leaves and unripe fruit but was not as effective as spinetoram. More plants in control (25%) than insecticide-treated plots (10-15%) had S. dorsalis damage. The yield was increased by the high rate of flupyradifurone, but percent thrips-damaged strawberries were not affected. With modest activity against S. dorsalis, flupyradifurone may be best used after a highly effective thrips insecticide when a follow-up application is needed.
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