<i>Quadraspidiotus perniciosus </i>in Tadzhikistan
In the article, it is given the detailed results of the research on biology, ecology, the harms of the Quadraspidiotus perniciosus and the steps to fight against it. It is clarified that the pest makes three generations a year in Tajikistan and the efficiency of the insecticide (fastak, polytrinum, karate, decis) when used for the pest has been determined between 74–95 %.