ABSTRACT.- Diaphorina citri poses a serious threat to citrus. Here, the nymphicidal activity of mineral and soybean oils, organosilicon, and citrus-essential-oil-derived adjuvants was evaluated. Additionally, mineral and soybean oils were studied for antifeedant and repellent effects on adults. Residual effect on the parasitoid Tamarixia radiata was also assessed. Nymphicidal activity ranged between 65-83%, with Silwet enhancing mineral and soybean oil efficacy. Evaluated soybean and mineral oil exhibited comparable antifeedant and repellent effects on adults. All products caused <20% mortality in T. radiata, even 24 h after spraying. Overall, tested adjuvants and oils offer promising eco-friendly alternatives for sustainable D. citri management. © 2024 Informa UK Limited, trading as Taylor & Francis Group.