Seasonal incidence and biology of tetranychus cinnabarinus on papaya in west Tripura, ne India

Background: Mites of the family Tetranychidae are undoubtedly among the many destructive pests of different vegetables in many parts of the world. Since the degree of incidence of red spider mite changes with season, it is desirable to have a thorough understanding of the seasonal incidence of the mite. Methods: Seasonal incidence of Tetranychus cinnabarinus (Boisd.) on the local variety of Papaya (Carica papaya) was studied in 4 different localities of Agartala, Tripura( west) during February,2019-January2020. Result: The population was recorded on both sides of the leaf which was always more on the dorsal surface. The population density was highest during January, 2020 (l485.0/ 2X75cm.2 leaf surface area) and lowest (1.5/ 2X75cm.2 leaf surface area) during June, 2019 in all localities. During April-July number of egg, total immature and adult was very small in number. The biology of T.cinnabarinus was conducted under laboratory condition at room temperature and total time required for development from egg to adult emergence was 4.1-8.1 days. Conclusion: Study of the seasonal incidence of the phytophagus mite will be he helpful to the farmers of Tripura for successful management and growth of papaya.