Insecticidal Effect of Zinc Oxide and Titanium Dioxide Nanoparticles against Bactericera cockerelli Sulc. (Hemiptera: Triozidae) on Tomato Solanum lycopersicum

The use of nanoparticles (NPs) has generated an alternative pest control. objective was to evaluate the insecticidal effect zinc oxide (ZnO NPs), titanium dioxide (TiO2 and their combination on Bactericera cockerelli (Hemiptera: Triozidae) second-stage nymphs under laboratory greenhouse conditions in tomato. research carried out with leaf immersion bioassay method a complete randomized design, by direct plant spraying block design; both designs, control without NPs added. Mortality recorded every 24 h for 4 days. Both showed toxicity B. nymphs. Results that significantly caused increased mortality 88, 99, 100% 96 after treatment ZnO NPs, TiO2 combinations, at 1000, 100, 250 ppm, respectively. Direct spray plants low 27, 32, 23% 3000, 500, These results seem promising. Nanoparticles as insecticides are novel strategy, however, further investigation is required field tests obtain suitable efficacy management system.