Journal of Taiwan Agricultural Research

Author:Hung-Chich Wen

Abstract:

    The field distribution and control of the two species of mango leafhopper, mango brown leafhopper (Idioscopus niveosparsus Leth) (MBL) and green leafhopper (I. clypealis Leth) (GL) were studied. The ratios of field populations of MBL and GL on the varieties of Irwin、Jin-huang、Haden and Native mango were 1.04：1、1.43：1、0.99：1 and 0.32：1, respectively. The population ratios of the two species (MBL：GL) on Irwin and Native mango plants lower than 2m、2 to 3m and taller than 3m in height were 1.93：1、1.04：1、0.31：1 and 0.61：1、0.32：1、0.18：1, respectively. These results indicated that GL prefers native mango and taller plants. However, the population of GL was more abundant than MBL when mango was mixed plantings with longan (Diamocarpus longana). Six insecticides were evaluated for their effectiveness against the leafhoppers in the laboratory and field conditions. Results indicated that 5% flucythrinate L. and 3% alphamethrin EC were more effective against the mango brown leafhopper and 2.8% cyhalothrin EC provided a better control of the green leafhopper.

Key words:mango, mango leafhopper, Idioscopus niveosparsus, I. clypealis, control

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