Arai, T. 2022 Forecasting the insecticide spraying periods of the first generation of Japanese mealybug using sex pheromone trap catches of the overwintering generation of adult males. Acta Horticulturae 1338: 313-320
Keywords:
Notes: The emerging periods of the first instar nymphs of the first generation of the Japanese mealybug, Planococcus kraunhiae (Kuwana) (Hemiptera: Pseudococcidae) were forecasted based on the first peak days of the sex pheromone trap catches of the overwintering generation of P. kraunhiae adult males. Forecast periods of the first instar nymphs were matched with the increasing periods of the number of first instar nymphs caught on sticky traps wrapped on persimmon twigs. Insecticide spraying during the forecasted period of the first instar nymphs decreased the percentage of fruits infested by the first generation of the mealybug. The sex pheromone trap catches of overwintering generation of P. kraunhiae adult males could be useful for forecasting the emergence of the first instar nymphs of the first generation of the mealybug, and for controlling the fruit infestation by the first generation.
