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Title: Soil applied insecticidal control of Scirtothrips dorsalis, 2011

Author
item KUMAR, VIVEK - University Of Florida
item KAKKAR, GARIMA - University Of Florida
item SEAL, DAKSHINA - University Of Florida
item McKenzie, Cindy
item OSBORNE, LANCE - University Of Florida

Submitted to: Arthropod Management Tests
Publication Type: Other
Publication Acceptance Date: 6/22/2015
Publication Date: 9/1/2015
Citation: Kumar, V., Kakkar, G., Seal, D.R., McKenzie, C.L., Osborne, L.S. 2015. Soil applied insecticidal control of Scirtothrips dorsalis, 2011. Arthropod Management Tests 40:E15, 2pp. 2015. (Report).

Interpretive Summary: In the United States, chilli thrips Scirtothrips dorsalis Hood is a newly introduced pest species of various tropical and subtropical crops that poses a significant economic threat to U.S. agriculture and trade. The current study was conducted with an objective to evaluate certain soil applied insecticides against this serious pest of vegetable production. Results showed that Admire, Durivo, and Platinum were more effective on immature and adults of Scirtothrips dorsalis compared to other treatments. Novel insecticides such as Sivanto, Cyazypyr and Coragen also provided effective suppression in Scirtothrips dorsalis population compared to control. Belay, Radiant and Hachi Hachi was not found effective against Scirtothrips dorsalis.

Technical Abstract: The objective of this study was to evaluate the efficacy of several conventional and novel soil applied insecticides against a new invasive thrips pest, Scirtothrips dorsalis Hood, in pepper under greenhouse condition. The trial was conducted at Tropical Research and Education Center in Homestead, Florida in hope to find an alternative to standard effective chemistries used in thrips control. Overall Admire, Durivo, Platinum and Sivanto were the most effective in controlling Scirtothrips dorsalis population (larvae and adults) during the course of study. Admire, Assail, Durivo and Platinum showed consistent result in regulating Scirtothrips dorsalis larvae and provided > 75% reduction until 10 DAT. Novel chemistries such as Sivanto (58-100%), Cyazypyr (81-99%) and Coragen (29-97%) also provided effective suppression of Scirtothrips dorsalis larvae during the study. Belay, Radiant and Hachi Hachi were found to be the least effective against S. dorsalis larvae and no significant reduction in larval population was observed after DAT 5 compared to untreated control. While evaluating different treatments for Scirtothrips dorsalis adults, Admire provided significant suppression in adults count compared to untreated control on all the sampling dates, whereas Durivo, Platinum, and Sivanto were effective until DAT 10.