Strawberry damage by thrips

Several reports have been made over the past two weeks of strawberries with injury by thrips. Strawberries that have been fed upon by the eastern flower thrips look dull and bronzed. Once injury is found in early plantings of berries, growers can pay attention to prevention of this injury in later plantings. Several options for spraying insecticides are available. Organic growers can spray Entrust (spinosad). Conventional growers who do not have a license to apply restricted-use pesticides can spray Radiant (spinetoram) or Assail 30SG (acetamiprid) or Sivanto Prime (flupyradifurone). Growers who have a license to apply restricted-use pesticides can spray either of two products that do not include thrips on the label’s list of target pests for strawberries but which are known to control thrips: Brigade WSB (bifenthrin) or Danitol 2.4EC (fenpropathrin). Pictures of thrips injury on strawberries and further information can be found on pages 40-41 of our Midwest small fruit pest management handbook: http://www.oardc.ohio-state.edu/fruitpathology/Bulletins/Midwest%20Sm%20Fruit%20861%201-24-11%20S.pdf

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