Field Efficacy Trials of Spirotetramat 24％ SC on Diaphorina citri Kuwayama and Dialeurodes citri Ashmead and Other Citrus Pests
[Aims]The field efficacy trials on spirotetramat 24％ SC had been conducted to validate the control effect against Dialeurodes citri Ashmead, Phyllocnistis citrella Stainton, Diaphorina citri Kuwayama and Panonychus citri McGregor in May to August in 2010.[Results]The results of field trials showed that the efficacies of l, 3 days after treatment of spirotetramat 24％ SC were over 90.1％ at 1000 mg/L.The efficacy was lower than 30.2％ on the 4th day after treatment against Phylloenistis citrella at 1000 mg/L.Spirotetramat 24％ SC provided unstable efficacy against Diaphorina citri Kuwayama.In the first and second tests, it provided good rapid and high efficacy(the control efficacies were over 95％ on the 24th day after treatment) against Diaphorina citri Kuwayama at 500 mg/L in May and June.In the third test, the efficacies were lower than 82％ during 1 to 15 days after treatment at 333, 500 and 1000 mg/L in August.The efficacies against Panonychus citri were 48.7 to 93.9％ during 1 to 22 days after treatment at 500 mg/L.[Conclusions]Spirotetramat 24％ SC provided good efficacy against Dialeurodes citri and Panonychus citri and unstable efficacy against Diaphorina citri Kuwayama and poor efficacy against Phyllocnistis citrella.
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万方数据
维普
