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Population Dynamics and Evaluation of Insecticides for Control of Scirtothrips dorsalis Hood on Mango
The population dynamics of <i>Thrips hawaiiensis</i> and <i>Scirtothrips dorsalis</i> in mango orchard at Fengshan, Kaohsiung City, Taiwan from 2011 through 2012.
The population dynamics of Thrips hawaiiensis and Scirtothrips dorsalis in mango orchard at Fengshan, Kaohsiung City, Taiwan from 2011 through 2012.

Author:Hsiou-Hua Hao

Abstract:

    Study on the occurrence of mango thrips was carried out in southern Taiwan from 2011 to 2012. Result indicated the chilli thrips (Scirtothrips dorsalis Hood), occurred all the year round in mango orchards and with the highest population density, followed by the flower thrips [Thrips hawaiiensis (Morgan)], which only occurred in blooming stage. The population of chilli thrips built up during mango early blossom in January, and with a peak in March. Its population increase rapidly during mango developing new leaves between July and September, and the first peak appeared from September to October. The population abundance of chili thrips decreased with high relative humidity in mango orchard (r = -0.85840, P = 0.0015). Eight insecticides were tested in the field against chili thrips. Results indicated that imidacloprid 9.6% SL, methiocarb 50% WP, tolfenpyrad 15% SC, and chlorfenapy 10% EC showed more effective in controlling this thrips.

Key words:Scirtothrips sorsalis Hood, Population-dynamics, Evaluation of insecticides, Mango

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Journal of
Taiwan Agricultural Research
Vol. 73, No.1 (2024) ISSN: 2790-086X Vol. 73, No.1 (2024)
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