Abstract
The availability of a phytoseiid mite, Amblyseius sojaensis EHARA, for the control of Panonychus citri (McGREGOR) on citrus, and Tetranychus kanzawai KISHIDA on kidney bean and grapevine when tea pollen was supplied as a food were investigated. Amblyseius sojaensis conrolled P. cilri at low densities on citrus leaves when tea pollen was added. Although the sympatric relationship between A. sojaensis and T. kanzawai was closer than that between this phytoseiid and P. citri, T. kanzawai populations increased on leaves where phytoseiids and tea pollen were present. As A. sojaensis was unable to control P. citri on pollen-absent leaves, control of P. citri can be expected only when a favorite food such as tea pollen is supplied whereas control of T. kanzawai populations by A. sojaensis appears not possible even with the addition of a preferable food.
