Efficacy of recent chemical insecticides against mealy plum aphid Hyalopterus pruni on plum and Spirea aphid Aphis spiraecola on apple in Bulgaria

The aim of this study was to establish the efficacy of new and little-known chemical insecticides, from different chemical classes, which are offered for control of Mealy plum aphid Hyalopterus pruni on plum and Spirea aphid Aphis spiraecola on apple in Bulgaria. Four products were tested - flupyradifurone (Sivanto prime), sulfoxaflor (Closer 120 SC), flonikamid (Teppeki 50WG) and acetamiprid (Mospilan 20SG). The tested concentrations of the chemical insecticides were applied according to their registrations for these and other pests. The experiments were carried out under field conditions. The results show that all the tested chemical insecticides are suitable for efficient control of both aphids, even at their lowest permitted concentration. Keywords: insecticides, aphids, Sivanto Prime, Closer, Teppeki, Mospilan, Hyalopterus pruni, Aphis spiraecola