Huanglongbing (HLB, also known as citrus greening) is a severe threat to the sustainability of the US citrus industry particularly in Florida. HLB is caused by the bacterial species, Candidatus Liberibacter asiaticus (CLas). CLas is transmitted by the vector, Asian Citrus Psyllid (ACP) during feeding. Altering or disrupting the feeding behavior of ACPs has potential to minimize disease progression. The goal of this project is to change the feeding behavior of ACPs by using a film barrier material, called hereafter �Organo-Silica based Composite Film (OSCF)�. The OSCF is a foliar product formulation that has polymer blended with silica based particles and gels. We have used metal ions (plant micronutrient) such as Ca, Mg, Zn as ionic cross-linker to stabilize polymer �silica gel structure. A series of OSCF materials (total 17) were prepared, characterized and evaluated for phytotoxicity, rainfastness and heat-trapping potential. The size and morphology of OSCF materials was observed using Scanning Electron Microscopy. All OSCF were found to be composite materials with multiple micron sizes with some versions displaying layered structures and others being more particulate. The interactions between silica, polymer and metal cross-linkers were confirmed using Fourier transform infrared spectroscopy and UV-Vis spectroscopy. Plant safety of OSCF materials was evaluated by observing phytotoxicity and heat-trapping potential on plant surface after foliar application. All OSCF materials developed over three years were found to be safe on citrus species. Rainfastness studies conducted on citrus seedlings treated with OSCF materials revealed that most OSCF materials retained at least 50% of their content after 3 simulated rainfalls. Efficacy of OSCF materials in minimizing HLB infection was evaluated in field conditions. ACP citrus infection trials conducted with Valencia orange plants indicated with earlier versions of OSCF product formulations. Results demonstrated good potential for lowering infection incidence of HLB. Subsequent ACP trials were unable to confirm the effectiveness of later versions of OSCF product formulations due to low infection among untreated controls.