title: Biological effectiveness of insecticides in pear psylla control
abstract: Psylla pyri L. is the pear dominant pest, which damage can reach 7090 %. 57 generations of the insect can develop during one growing season in the south of Russia. Phytophage is difficult to control due to development of insecticide resistance and presence of different growth stages at the same time in summer. Therefore, the research aim was to identify the most effective insecticides with various modes of action that restrain the number and development of pear psylla nymphs. The research tasks 
journal: RUDN Journal of Agronomy and Animal Industries