<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 <i>Quadraspidiotus perniciosus </i>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 %.