Identification of alternative hosts of flower thrips invading blueberry fields in Georgia

Thrips (Thysanoptera: Thripidae) are significant group of pests of blueberry. Blueberry plants from vegetative and fruit bearing fields are affected by thrips. Apart from causing feeding injury, thrips can also transmit viral diseases. Insecticides are the primary tools for controlling thrips in blueberries. However, the frequent application of insecticides can lead to the development of insecticide resistance. Beneficial insects and pollinators are also negatively affected. Therefore, there is an immediate need to develop a sustainable strategy to control the thrips population that does not enhance insecticide resistance. A field survey was conducted in blueberry-growing areas in southern Georgia. Flower samples were collected from several plants and yellow sticky cards were placed to monitor the movement and status of thrips. This research study aims to determine the seasonal abundance of thrips in blueberries and alternative hosts in the vicinity of the blueberry field. The results obtained from this study will help to detect the sources of early infestation of thrips in the blueberry flowering season and help to develop a management program to reduce the thrips population.