2009 Volume 51 Pages 1-3
Effect of the predatory mite, Amblyseius swirskii Athias-Henriot on the population of thrips and whitefly was investigated on greenhouse cucumber. In the released plot, 25 A. swirskii per square meter were released for control of the melon thrips, Thrips palmi Karny and the sweetpotato whitefly, Bemisia tabaci (Gennadius) on 20 and 27 September and 4 October 2007, respectively. A. swirskii colonized on leaves and the population densities of 2 pest species became lower in the released plot than in the control plot 3 weeks after first releasing. The temperature condition during the investigation (average: 16-33 °C, max: 19-48 °C, min: 6-23 °C) did not affect the colonizing success of A. swirskii on greenhouse cucumber.
