text: Our results indicate that azadirachtin can be applied at very low concentrations to effectively manage developing D. citri populations. This botanical insecticide has been found to be relatively nontoxic to beneficial insects (Lowery & Isman 1995; Naumann & Isman 1996; Walter 1999; Tang et al. 2002) and should be safe to apply in the presence of natural enemies found in citrus, particularly at concentrations required to control psyllid nymphs. Furthermore, no phytotoxicity was observed to any of the plant tissues used in these experiments. Neem biopesticides may therefore be well-suited for inclusion in citrus integrated pest management programs. Since low concentrations of neem-based products have been demonstrated to be effective against D. citri and other important citrus pests (Villanueva-Jiménez et al. 2000; Tang et al. 2002; Weathersbee & Tang 2002), field trials are warranted to determine appropriate methods of application and efficacy in commercial settings.