Geïntegreerde bestrijding van citruswolluis Planococcus citri in roos

Abstract Since early 2000 the citrus mealybug, Planococcus citri (Risso), has become a key pest in roses cultivated in greenhouses in The Netherlands. While adopting a more integrated approach toward controlling (other) pests, growers have abandoned regular applications of broad spectrum pesticides, thus allowing mealybugs to become more widespread. Researchers have been investigating the benefits of both inundative releases of (commercial available) natural enemies of this pest. The relevance of introducing natural enemies for controlling mealybugs on greenhouse roses is discussed