Louisiana Cotton: Western Flower Thrips Already Building
Currently, Dr. David Kerns has been finding large numbers of western flower thrips in cotton trials located on the Macon Ridge Research Station. Western flower thrips were a problem in Louisiana cotton last year and it appears that this trend will continue for the 2012 season.
Western flower thrips are more difficult to control than other thrips species found in cotton. Insecticide seed treatments offer 10-14 days of control after plants emerge and western flower thrips can cause these treatments to give out sooner.
The use of acephate, Dimethoate, Bidrin, etc., will not give satisfactory control of established western flower thripspopulations and will likely flare spider mites and cotton aphids.
LSU AgCenter research has demonstrated that Radiant, when used with an adjuvant, effectively controlled all species of thrips including western flower thrips in seedling cotton. Radiant effectively kept thrips populations controlled for 7 days after application and did not flare spider mites or aphids.
If you have any questions or concerns feel free to contact Dr. David Kerns or Sebe Brown for more information.
Dr. David Kerns